Alan Donovan
a22cb5cabe
runtime/debug: eliminate temporary variadicity from SetCrashOutput
...
Updates #67182
Change-Id: I33fc8c515f4a9d120262ba30f61aea80ede5e9f8
Reviewed-on: https://go-review.googlesource.com/c/go/+/585420
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Austin Clements <austin@google.com>
2024-05-16 15:19:04 +00:00
Mateusz Poliwczak
722d59436b
crypto/x509: add text and binary marshal methods to OID
...
Fixes #66249
Change-Id: I5973a19a087a35ad951e8a220d3e6e4456c7577f
GitHub-Last-Rev: 921ca8bd0cgolang/go#66599
Reviewed-on: https://go-review.googlesource.com/c/go/+/575295
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Reviewed-by: Roland Shoemaker <roland@golang.org>
Auto-Submit: Roland Shoemaker <roland@golang.org>
2024-05-16 02:00:26 +00:00
Alan Donovan
7730e5b783
go/ast: add Preorder go1.23 iterator
...
This CL adds a new function Preorder that makes it
easier to iterate over the nodes of a syntax tree.
In particular, break, continue, and return retain
their usual continuations.
Fixes #66339
Change-Id: I438b3c23780c91ed589871ad3b8822d54e8fabc7
Reviewed-on: https://go-review.googlesource.com/c/go/+/570680
Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Alan Donovan <adonovan@google.com>
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2024-05-15 21:44:50 +00:00
Robert Griesemer
bf279b71e2
go/types, types2: add Alias.{TypeParams, SetTypeParams, TypeArgs, Origin}
...
Fixes #67143 .
Change-Id: I8bf9c2559f95d3d6a40874454208ae074b68875c
Reviewed-on: https://go-review.googlesource.com/c/go/+/583757
Reviewed-by: Alan Donovan <adonovan@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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2024-05-15 21:32:30 +00:00
Alan Donovan
3f7a030e02
runtime/debug: add SetCrashOutput(...CrashOptions) parameter
...
This is a placeholder for future options (e.g. JSON).
The parameter is temporarily variadic to avoid breaking
x/telemetry (see CL 585378), but I plan to remove
the "..." later this week.
Updates #67182
Change-Id: I3f6f39455d852f92902f8e3f007d3093cbe555db
Reviewed-on: https://go-review.googlesource.com/c/go/+/585557
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Reviewed-by: Austin Clements <austin@google.com>
2024-05-15 21:04:14 +00:00
Matt Layher
f6c3a3e3c8
slices: add Chunk
...
Chunk returns an iterator over consecutive sub-slices of up to n elements of s.
Fixes #53987 .
Change-Id: I508274eca388db39550eb9e4d8abd5ce68d29d8d
Reviewed-on: https://go-review.googlesource.com/c/go/+/562935
Reviewed-by: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2024-05-10 17:28:50 +00:00
Ian Lance Taylor
0b5f72251b
slices: add iterator-related functions
...
Fixes #61899
Change-Id: Icbde1ac8293723eefc3251008ae9711e756ed1b3
Reviewed-on: https://go-review.googlesource.com/c/go/+/568477
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
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2024-05-09 19:20:55 +00:00
qiulaidongfeng
524a774634
reflect: add iterative related methods
...
Fixes #66056
Change-Id: I1e24636e43e68cd57576c39b014e0826fb6c322c
GitHub-Last-Rev: 319ad8ea7cgolang/go#66824
Reviewed-on: https://go-review.googlesource.com/c/go/+/578815
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-05-09 11:54:18 +00:00
Russ Cox
9c4849bf20
math/rand/v2: add Uint
...
Uint was part of the approved proposal but was inadvertently left
out of Go 1.22. Add for Go 1.23.
Change-Id: Ifaf24447bd70c8524c2fd299eefdf4aa29e49e66
Reviewed-on: https://go-review.googlesource.com/c/go/+/583455
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Reviewed-by: Robert Griesemer <gri@google.com>
2024-05-07 18:03:11 +00:00
Russ Cox
5a181c5042
iter: expose fundamental types to Go 1.23
...
These were previously only available with GOEXPERIMENT=rangefunc.
For #61897 .
Change-Id: I86aea5ae8be1f7a2975b623325811221ed40d384
Reviewed-on: https://go-review.googlesource.com/c/go/+/557836
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
2024-05-06 20:33:25 +00:00
Alan Donovan
9b9de261bd
go/types: add Alias.Rhs
...
This method returns the type on the right-hand side of an
alias declaration such as type L = R.
Fixes #66559
Change-Id: I396f2d999680ad251f47cdde20856ae20fc1c40a
Reviewed-on: https://go-review.googlesource.com/c/go/+/581615
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Auto-Submit: Alan Donovan <adonovan@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
2024-04-24 21:50:16 +00:00
Michael Anthony Knyszek
a088e230d4
unique: add unique package and implement Make/Handle
...
This change adds the unique package for canonicalizing values, as
described by the proposal in #62483 .
Fixes #62483 .
Change-Id: I1dc3d34ec12351cb4dc3838a8ea29a5368d59e99
Reviewed-on: https://go-review.googlesource.com/c/go/+/574355
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Reviewed-by: Ingo Oeser <nightlyone@googlemail.com>
Reviewed-by: David Chase <drchase@google.com>
2024-04-22 18:14:07 +00:00
Nuno Gonçalves
a63907808d
net/http: add field Cookie.Quoted bool
...
The current implementation of the http package strips double quotes
from the cookie-value during parsing, resulting in the serialized
cookie not including them. This patch addresses this limitation by
introducing a new field to track whether the original value was
enclosed in quotes.
Additionally, the internal representation of a cookie in the cookiejar
package has been adjusted to align with the new representation.
The syntax of cookies is outlined in RFC 6265 Section 4.1.1:
https://datatracker.ietf.org/doc/html/rfc6265\#section-4.1.1
Fixes #46443
Change-Id: Iac12a56397d77a6060a75757ab0daeacc60457f3
GitHub-Last-Rev: a76440e741golang/go#66752
Reviewed-on: https://go-review.googlesource.com/c/go/+/577755
Reviewed-by: Damien Neil <dneil@google.com>
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2024-04-19 00:32:19 +00:00
Alan Donovan
01064622a2
go/types: add Func.Signature method
...
Unfortunately we can't enforce the repr invariant
that Func.typ != nil without thinking about the
object color invariants. For now, return a trivial
Signature if typ == nil, which should never happen
in bug-free client code.
Fixes golang/go#65772
Change-Id: I7f89c6d8fdc8dcd4b8880572e54bb0ed9b6136eb
Reviewed-on: https://go-review.googlesource.com/c/go/+/565375
Commit-Queue: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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2024-04-18 22:17:27 +00:00
Jes Cok
076166ab4e
net/http: add ParseCookie, ParseSetCookie
...
Fixes #66008
Change-Id: I64acb7da47a03bdef955f394682004906245a18b
Reviewed-on: https://go-review.googlesource.com/c/go/+/578275
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-04-17 17:43:50 +00:00
Ian Lance Taylor
315b6ae682
debug/elf: define non-standard but well-known symbol types
...
Fixes #66836
Change-Id: I603faca2acd2bcffabbcaca8b8670d46387d2a5b
Reviewed-on: https://go-review.googlesource.com/c/go/+/578995
Commit-Queue: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-04-16 00:01:16 +00:00
Mateusz Poliwczak
71d84ee7b4
net: add Unwrap to *DNSError
...
Fixes #63116
Change-Id: Iab8c415555ab85097be6d2d133b3349c5219a23b
GitHub-Last-Rev: 8a8177b9afgolang/go#63348
Reviewed-on: https://go-review.googlesource.com/c/go/+/532217
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Commit-Queue: Ian Lance Taylor <iant@google.com>
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2024-04-14 18:23:45 +00:00
Cuong Manh Le
d08a957298
all: add reflect.SliceAt function
...
Fixes #61308
Change-Id: Ic17d737fda055a60779985d5da497745c80d5cfa
Reviewed-on: https://go-review.googlesource.com/c/go/+/516597
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Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
2024-04-02 21:51:18 +00:00
Ian Lance Taylor
27f41bb153
Revert "testing: add TB.SetGOMAXPROCS function"
...
This reverts CL 519235.
Reason for revert: Proposal is still in incoming.
For #62020
Change-Id: Icccb930209f36097f5d930c01eda6b5042bdddc1
Reviewed-on: https://go-review.googlesource.com/c/go/+/573516
Reviewed-by: Than McIntosh <thanm@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-03-22 13:07:36 +00:00
sivchari
5d29578fd5
testing: add TB.SetGOMAXPROCS function
...
Add a new method TB.SetGOMAXPROCS which sets variable of GOMAXPROCS.
This method aims to set a variable for the isolated lifetime of the test and cleans up.
And unset this when the test ends.
This method disables the test or benchmark from running in
parallel.
Fixes : #62020
Change-Id: Iae44109d0def35cc47049c3ca4cd5306173d52ee
Signed-off-by: sivchari <shibuuuu5@gmail.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/519235
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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2024-03-21 20:26:36 +00:00
Timo Furrer
6dca707656
net/http: add Request.CookiesNamed
...
Implements a new method http.Request.CookiesName, that allows
retrieving all cookies that match the given name.
Fixes #61472
Change-Id: I405d8771b4195af9ff6b4dfde3cfcd316c23b70c
GitHub-Last-Rev: 6ad0094995golang/go#61473
Reviewed-on: https://go-review.googlesource.com/c/go/+/511516
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
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Reviewed-by: Damien Neil <dneil@google.com>
2024-03-20 16:17:16 +00:00
Jes Cok
f94d82b2c0
slices: add func Repeat
...
Fixes #65238
Change-Id: I32ae4d922788cc6fbbe80f5b558a075951e3c892
Reviewed-on: https://go-review.googlesource.com/c/go/+/571895
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
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2024-03-19 21:38:37 +00:00
qiulaidongfeng
d838e4dcdf
archive/tar: add FileInfoNames interface
...
An optional interface FileInfoNames has been added.
If the parameter fi of FileInfoHeader implements the interface
the Gname/Uname of the return value Header
are provided by the method of the interface.
Also added testing.
Fixes #50102
Change-Id: I47976e238eb20ed43113b060e4f83a14ae49493e
GitHub-Last-Rev: a213613c79golang/go#65273
Reviewed-on: https://go-review.googlesource.com/c/go/+/558355
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-03-15 16:01:50 +00:00
Kevin Burke
3a41bfac9b
net/http/httptest: add NewRequestWithContext
...
This matches the net/http API.
Updates #59473 .
Change-Id: I99917cef3ed42a0b4a2b39230b492be00da8bbfd
Reviewed-on: https://go-review.googlesource.com/c/go/+/548355
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Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-03-11 18:09:14 +00:00
Joel Sing
1e433915ce
cmd/link,debug/elf: mark Go binaries with no branch target CFI on openbsd
...
OpenBSD enables Indirect Branch Tracking (IBT) on amd64 and Branch Target
Identification (BTI) on arm64, where hardware permits. Since Go generated
binaries do not currently support IBT or BTI, temporarily mark them with
PT_OPENBSD_NOBTCFI which prevents branch target CFI from being enforced
on execution. This should be removed as soon asn IBT and BTI support are
available.
Fixes #66040
Updates #66054
Change-Id: I91ac05736e6942c54502bef4b8815eb8740d2d5e
Reviewed-on: https://go-review.googlesource.com/c/go/+/568435
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Reviewed-by: Than McIntosh <thanm@google.com>
2024-03-10 04:13:26 +00:00
Jes Cok
ef4f2a0597
unicode/utf16: add func RuneLen
...
This CL adds func RuneLen, while here, also uses RuneLen to simplify
code in Encode.
Fixes #44940
Change-Id: Ifd3b537f69880dfd32a69a6733d8d3c2b5d4ecba
Reviewed-on: https://go-review.googlesource.com/c/go/+/569755
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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2024-03-07 19:08:48 +00:00
Jes Cok
33013e8ea8
reflect: add Overflow methods to Type
...
This CL adds new methods synonymous with the method of the same name
in reflect.Value to reflect.Type: OverflowComplex, OverflowFloat, OverflowInt, OverflowUint.
Fixes #60427
Change-Id: I7a0bb35629e59a7429820f13fcd3a6f120194bc6
GitHub-Last-Rev: 26c11bcffegolang/go#65955
Reviewed-on: https://go-review.googlesource.com/c/go/+/567296
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2024-02-28 14:08:38 +00:00
Damien Neil
e596e88318
path/filepath: add Localize
...
Add the Localize function, which takes an io/fs slash-separated path
and returns an operating system path.
Localize returns an error if the path cannot be represented on
the current platform.
Replace internal/safefile.FromFS with Localize,
which serves the same purpose as this function.
The internal/safefile package remains separate from path/filepath
to avoid a dependency cycle with the os package.
Fixes #57151
Change-Id: I75c88047ddea17808276761da07bf79172c4f6fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/531677
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2024-02-26 18:08:14 +00:00
Andy Pan
d9be60974b
os: implement CopyFS
...
Fixes #62484
Change-Id: I5d8950dedf86af48f42a641940b34e62aa2cddcb
Reviewed-on: https://go-review.googlesource.com/c/go/+/558995
Auto-Submit: Ian Lance Taylor <iant@google.com>
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2024-02-23 00:19:54 +00:00
Andy Pan
d42cd452dc
net: add KeepAliveConfig and implement SetKeepAliveConfig
...
Fixes #62254
Fixes #48622
Change-Id: Ida598e7fa914c8737fdbc1c813bcd68adb5119c3
Reviewed-on: https://go-review.googlesource.com/c/go/+/542275
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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2024-02-20 06:04:31 +00:00
Hiro
5b6cd3d0cb
sync: add Map.Clear
...
Fixes #61696
Change-Id: I0a31afd3bc433fc84280d56f2798bda10da61eba
GitHub-Last-Rev: 17bedc864fgolang/go#61702
Reviewed-on: https://go-review.googlesource.com/c/go/+/515015
Auto-Submit: Bryan Mills <bcmills@google.com>
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Reviewed-by: qiulaidongfeng <2645477756@qq.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
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2024-02-01 15:34:22 +00:00
Alan Donovan
1bb947b2eb
runtime/debug: SetCrashOutput sets the FD for fatal panics
...
This feature makes it possible to record unhandled panics
in any goroutine through a watchdog process (e.g. the same
application forked+exec'd as a child in a special mode)
that can process the panic report, for example by sending
it to a crash-reporting system such as Go telemetry
or Sentry.
Fixes #42888
Change-Id: I5aa7be8f726bbc70fc650540bd1a14ab60c62ecb
Reviewed-on: https://go-review.googlesource.com/c/go/+/547978
Reviewed-by: Michael Pratt <mpratt@google.com>
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Reviewed-by: Russ Cox <rsc@golang.org>
2024-01-31 16:50:42 +00:00
Michael Anthony Knyszek
186c473424
api: promote next to go1.22
...
Change-Id: Ib9d1eabfe6199575ea57183ccb21f62c40e11d84
Reviewed-on: https://go-review.googlesource.com/c/go/+/544555
Reviewed-by: Heschi Kreinick <heschi@google.com>
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2023-11-22 18:54:32 +00:00
Michael Knyszek
82fc03f9c9
Revert "math/rand/v2: add ChaCha8"
...
This reverts commit 6382893890#64284 .
For #64285 .
Change-Id: Ic1bb8533d9641fae28d0337b36d434b9a575cd7e
Reviewed-on: https://go-review.googlesource.com/c/go/+/543895
Reviewed-by: Heschi Kreinick <heschi@google.com>
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2023-11-20 18:39:03 +00:00
Russ Cox
6382893890
math/rand/v2: add ChaCha8
...
ChaCha8 provides a cryptographically strong generator
alongside PCG, so that people who want stronger randomness
have access to that. On systems with 128-bit vector math
assembly (amd64 and arm64), ChaCha8 runs at about the same
speed as PCG (25% slower on amd64, 2% faster on arm64).
Obviously all the claimed benchmark variation other than the
new ChaCha8 benchmark is a lie.
goos: linux
goarch: amd64
pkg: math/rand/v2
cpu: AMD Ryzen 9 7950X 16-Core Processor
│ afa459a2f0.amd64 │ bbb48afeb7.amd64 │
│ sec/op │ sec/op vs base │
PCG_DXSM-32 1.488n ± 2% 1.492n ± 2% ~ (p=0.309 n=20)
ChaCha8-32 1.861n ± 2%
SourceUint64-32 1.450n ± 3% 1.590n ± 2% +9.69% (p=0.000 n=20)
GlobalInt64-32 2.067n ± 2% 2.061n ± 1% ~ (p=0.952 n=20)
GlobalInt64Parallel-32 0.1044n ± 2% 0.1041n ± 1% ~ (p=0.498 n=20)
GlobalUint64-32 2.085n ± 0% 2.256n ± 2% +8.23% (p=0.000 n=20)
GlobalUint64Parallel-32 0.1008n ± 1% 0.1018n ± 1% ~ (p=0.041 n=20)
Int64-32 1.779n ± 1% 1.779n ± 1% ~ (p=0.410 n=20)
Uint64-32 1.854n ± 2% 1.882n ± 1% ~ (p=0.044 n=20)
GlobalIntN1000-32 3.140n ± 3% 3.115n ± 3% ~ (p=0.673 n=20)
IntN1000-32 2.496n ± 1% 2.509n ± 1% ~ (p=0.171 n=20)
Int64N1000-32 2.510n ± 2% 2.493n ± 1% ~ (p=0.804 n=20)
Int64N1e8-32 2.471n ± 2% 2.521n ± 1% +1.98% (p=0.003 n=20)
Int64N1e9-32 2.488n ± 2% 2.506n ± 1% ~ (p=0.663 n=20)
Int64N2e9-32 2.478n ± 2% 2.482n ± 2% ~ (p=0.533 n=20)
Int64N1e18-32 3.088n ± 1% 3.216n ± 1% +4.15% (p=0.000 n=20)
Int64N2e18-32 3.493n ± 1% 3.635n ± 2% +4.05% (p=0.000 n=20)
Int64N4e18-32 5.060n ± 2% 5.122n ± 1% +1.22% (p=0.000 n=20)
Int32N1000-32 2.620n ± 1% 2.672n ± 1% +2.00% (p=0.002 n=20)
Int32N1e8-32 2.652n ± 0% 2.646n ± 1% ~ (p=0.743 n=20)
Int32N1e9-32 2.644n ± 1% 2.660n ± 2% ~ (p=0.163 n=20)
Int32N2e9-32 2.619n ± 2% 2.652n ± 1% ~ (p=0.132 n=20)
Float32-32 2.261n ± 1% 2.267n ± 1% ~ (p=0.516 n=20)
Float64-32 2.241n ± 2% 2.276n ± 1% ~ (p=0.080 n=20)
ExpFloat64-32 3.716n ± 1% 3.779n ± 1% +1.68% (p=0.007 n=20)
NormFloat64-32 3.718n ± 1% 3.747n ± 1% ~ (p=0.011 n=20)
Perm3-32 34.11n ± 2% 34.23n ± 2% ~ (p=0.779 n=20)
Perm30-32 200.6n ± 0% 202.3n ± 2% ~ (p=0.055 n=20)
Perm30ViaShuffle-32 109.7n ± 1% 115.5n ± 2% +5.34% (p=0.000 n=20)
ShuffleOverhead-32 107.2n ± 1% 113.3n ± 1% +5.74% (p=0.000 n=20)
Concurrent-32 2.108n ± 6% 2.107n ± 1% ~ (p=0.448 n=20)
goos: darwin
goarch: arm64
pkg: math/rand/v2
cpu: Apple M1
│ afa459a2f0.arm64 │ bbb48afeb7.arm64 │
│ sec/op │ sec/op vs base │
PCG_DXSM-8 2.531n ± 0% 2.529n ± 0% ~ (p=0.586 n=20)
ChaCha8-8 2.480n ± 0%
SourceUint64-8 2.531n ± 0% 2.534n ± 0% ~ (p=0.227 n=20)
GlobalInt64-8 2.177n ± 1% 2.173n ± 1% ~ (p=0.733 n=20)
GlobalInt64Parallel-8 0.4319n ± 0% 0.4304n ± 0% -0.32% (p=0.003 n=20)
GlobalUint64-8 2.185n ± 1% 2.185n ± 0% ~ (p=0.541 n=20)
GlobalUint64Parallel-8 0.4295n ± 1% 0.4294n ± 0% ~ (p=0.203 n=20)
Int64-8 4.104n ± 0% 4.107n ± 0% ~ (p=0.193 n=20)
Uint64-8 4.080n ± 0% 4.081n ± 0% ~ (p=0.053 n=20)
GlobalIntN1000-8 2.814n ± 1% 2.814n ± 0% ~ (p=0.879 n=20)
IntN1000-8 4.140n ± 0% 4.141n ± 0% ~ (p=0.428 n=20)
Int64N1000-8 4.139n ± 0% 4.140n ± 0% ~ (p=0.114 n=20)
Int64N1e8-8 4.140n ± 0% 4.140n ± 0% ~ (p=0.898 n=20)
Int64N1e9-8 4.139n ± 0% 4.140n ± 0% ~ (p=0.593 n=20)
Int64N2e9-8 4.140n ± 0% 4.139n ± 0% ~ (p=0.158 n=20)
Int64N1e18-8 5.273n ± 0% 5.274n ± 0% ~ (p=0.308 n=20)
Int64N2e18-8 6.059n ± 0% 6.058n ± 0% ~ (p=0.053 n=20)
Int64N4e18-8 8.803n ± 0% 8.800n ± 0% ~ (p=0.673 n=20)
Int32N1000-8 4.131n ± 0% 4.131n ± 0% ~ (p=0.342 n=20)
Int32N1e8-8 4.131n ± 0% 4.131n ± 0% ~ (p=0.091 n=20)
Int32N1e9-8 4.131n ± 0% 4.131n ± 0% ~ (p=0.273 n=20)
Int32N2e9-8 4.131n ± 0% 4.131n ± 0% ~ (p=0.425 n=20)
Float32-8 4.110n ± 0% 4.112n ± 0% ~ (p=0.203 n=20)
Float64-8 4.104n ± 0% 4.106n ± 0% ~ (p=0.409 n=20)
ExpFloat64-8 5.338n ± 0% 5.339n ± 0% ~ (p=0.037 n=20)
NormFloat64-8 5.731n ± 0% 5.733n ± 0% ~ (p=0.692 n=20)
Perm3-8 26.62n ± 0% 26.65n ± 0% +0.09% (p=0.000 n=20)
Perm30-8 194.6n ± 2% 194.9n ± 0% ~ (p=0.141 n=20)
Perm30ViaShuffle-8 156.4n ± 0% 156.5n ± 0% +0.06% (p=0.000 n=20)
ShuffleOverhead-8 125.8n ± 0% 125.0n ± 0% -0.64% (p=0.000 n=20)
Concurrent-8 2.654n ± 6% 2.441n ± 6% -8.06% (p=0.009 n=20)
goos: linux
goarch: 386
pkg: math/rand/v2
cpu: AMD Ryzen 9 7950X 16-Core Processor
│ afa459a2f0.386 │ bbb48afeb7.386 │
│ sec/op │ sec/op vs base │
PCG_DXSM-32 7.793n ± 2% 7.647n ± 1% ~ (p=0.021 n=20)
ChaCha8-32 11.48n ± 2%
SourceUint64-32 7.680n ± 1% 7.714n ± 1% ~ (p=0.713 n=20)
GlobalInt64-32 3.474n ± 3% 3.491n ± 28% ~ (p=0.337 n=20)
GlobalInt64Parallel-32 0.3253n ± 0% 0.3194n ± 0% -1.81% (p=0.000 n=20)
GlobalUint64-32 3.433n ± 2% 3.610n ± 2% +5.14% (p=0.000 n=20)
GlobalUint64Parallel-32 0.3156n ± 0% 0.3164n ± 0% ~ (p=0.073 n=20)
Int64-32 7.707n ± 1% 7.824n ± 0% +1.52% (p=0.005 n=20)
Uint64-32 7.714n ± 1% 7.732n ± 2% ~ (p=0.441 n=20)
GlobalIntN1000-32 6.236n ± 1% 6.176n ± 2% ~ (p=0.499 n=20)
IntN1000-32 10.41n ± 1% 10.31n ± 2% ~ (p=0.782 n=20)
Int64N1000-32 10.97n ± 2% 11.22n ± 2% +2.19% (p=0.002 n=20)
Int64N1e8-32 10.98n ± 1% 11.07n ± 1% ~ (p=0.056 n=20)
Int64N1e9-32 10.95n ± 0% 11.15n ± 2% ~ (p=0.016 n=20)
Int64N2e9-32 11.11n ± 1% 11.00n ± 1% ~ (p=0.654 n=20)
Int64N1e18-32 15.18n ± 2% 14.97n ± 2% ~ (p=0.387 n=20)
Int64N2e18-32 15.61n ± 1% 15.91n ± 1% +1.92% (p=0.003 n=20)
Int64N4e18-32 19.23n ± 2% 18.98n ± 1% ~ (p=1.000 n=20)
Int32N1000-32 10.35n ± 1% 10.31n ± 2% ~ (p=0.081 n=20)
Int32N1e8-32 10.33n ± 1% 10.38n ± 1% ~ (p=0.335 n=20)
Int32N1e9-32 10.35n ± 1% 10.37n ± 1% ~ (p=0.497 n=20)
Int32N2e9-32 10.35n ± 1% 10.41n ± 1% ~ (p=0.605 n=20)
Float32-32 13.57n ± 1% 13.78n ± 2% ~ (p=0.047 n=20)
Float64-32 22.95n ± 4% 23.43n ± 3% ~ (p=0.218 n=20)
ExpFloat64-32 15.23n ± 2% 15.46n ± 1% ~ (p=0.095 n=20)
NormFloat64-32 13.78n ± 1% 13.73n ± 2% ~ (p=0.031 n=20)
Perm3-32 46.62n ± 2% 47.46n ± 2% +1.82% (p=0.004 n=20)
Perm30-32 400.7n ± 1% 403.5n ± 1% ~ (p=0.098 n=20)
Perm30ViaShuffle-32 350.5n ± 1% 348.1n ± 2% ~ (p=0.703 n=20)
ShuffleOverhead-32 326.0n ± 2% 326.2n ± 2% ~ (p=0.440 n=20)
Concurrent-32 3.290n ± 0% 3.297n ± 4% ~ (p=0.189 n=20)
For #61716 .
Change-Id: Id2a7e1c1db0beb81f563faaefba65fe292497269
Reviewed-on: https://go-review.googlesource.com/c/go/+/516859
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2023-11-19 22:05:54 +00:00
Andy Pan
f664031bc1
net,os: arrange zero-copy of os.File and net.TCPConn to net.UnixConn
...
Fixes #58808
goos: linux
goarch: amd64
pkg: net
cpu: DO-Premium-Intel
│ old │ new │
│ sec/op │ sec/op vs base │
Splice/tcp-to-unix/1024-4 3.783µ ± 10% 3.201µ ± 7% -15.40% (p=0.001 n=10)
Splice/tcp-to-unix/2048-4 3.967µ ± 13% 3.818µ ± 16% ~ (p=0.971 n=10)
Splice/tcp-to-unix/4096-4 4.988µ ± 16% 4.590µ ± 11% ~ (p=0.089 n=10)
Splice/tcp-to-unix/8192-4 6.981µ ± 13% 5.236µ ± 9% -25.00% (p=0.000 n=10)
Splice/tcp-to-unix/16384-4 10.192µ ± 9% 7.350µ ± 7% -27.89% (p=0.000 n=10)
Splice/tcp-to-unix/32768-4 19.65µ ± 13% 10.28µ ± 16% -47.69% (p=0.000 n=10)
Splice/tcp-to-unix/65536-4 41.89µ ± 18% 15.70µ ± 13% -62.52% (p=0.000 n=10)
Splice/tcp-to-unix/131072-4 90.05µ ± 11% 29.55µ ± 10% -67.18% (p=0.000 n=10)
Splice/tcp-to-unix/262144-4 170.24µ ± 15% 52.66µ ± 4% -69.06% (p=0.000 n=10)
Splice/tcp-to-unix/524288-4 326.4µ ± 13% 109.3µ ± 11% -66.52% (p=0.000 n=10)
Splice/tcp-to-unix/1048576-4 651.4µ ± 9% 228.3µ ± 14% -64.95% (p=0.000 n=10)
geomean 29.42µ 15.62µ -46.90%
│ old │ new │
│ B/s │ B/s vs base │
Splice/tcp-to-unix/1024-4 258.2Mi ± 11% 305.2Mi ± 8% +18.21% (p=0.001 n=10)
Splice/tcp-to-unix/2048-4 492.5Mi ± 15% 511.7Mi ± 13% ~ (p=0.971 n=10)
Splice/tcp-to-unix/4096-4 783.5Mi ± 14% 851.2Mi ± 12% ~ (p=0.089 n=10)
Splice/tcp-to-unix/8192-4 1.093Gi ± 11% 1.458Gi ± 8% +33.36% (p=0.000 n=10)
Splice/tcp-to-unix/16384-4 1.497Gi ± 9% 2.076Gi ± 7% +38.67% (p=0.000 n=10)
Splice/tcp-to-unix/32768-4 1.553Gi ± 11% 2.969Gi ± 14% +91.17% (p=0.000 n=10)
Splice/tcp-to-unix/65536-4 1.458Gi ± 23% 3.888Gi ± 11% +166.69% (p=0.000 n=10)
Splice/tcp-to-unix/131072-4 1.356Gi ± 10% 4.131Gi ± 9% +204.72% (p=0.000 n=10)
Splice/tcp-to-unix/262144-4 1.434Gi ± 13% 4.637Gi ± 4% +223.32% (p=0.000 n=10)
Splice/tcp-to-unix/524288-4 1.497Gi ± 15% 4.468Gi ± 10% +198.47% (p=0.000 n=10)
Splice/tcp-to-unix/1048576-4 1.501Gi ± 10% 4.277Gi ± 16% +184.88% (p=0.000 n=10)
geomean 1.038Gi 1.954Gi +88.28%
│ old │ new │
│ B/op │ B/op vs base │
Splice/tcp-to-unix/1024-4 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
Splice/tcp-to-unix/2048-4 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
Splice/tcp-to-unix/4096-4 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
Splice/tcp-to-unix/8192-4 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
Splice/tcp-to-unix/16384-4 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
Splice/tcp-to-unix/32768-4 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
Splice/tcp-to-unix/65536-4 1.000 ± ? 0.000 ± 0% -100.00% (p=0.001 n=10)
Splice/tcp-to-unix/131072-4 2.000 ± 0% 0.000 ± 0% -100.00% (p=0.000 n=10)
Splice/tcp-to-unix/262144-4 4.000 ± 25% 0.000 ± 0% -100.00% (p=0.000 n=10)
Splice/tcp-to-unix/524288-4 7.500 ± 33% 0.000 ± 0% -100.00% (p=0.000 n=10)
Splice/tcp-to-unix/1048576-4 17.00 ± 12% 0.00 ± 0% -100.00% (p=0.000 n=10)
geomean ² ? ² ³
¹ all samples are equal
² summaries must be >0 to compute geomean
³ ratios must be >0 to compute geomean
│ old │ new │
│ allocs/op │ allocs/op vs base │
Splice/tcp-to-unix/1024-4 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
Splice/tcp-to-unix/2048-4 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
Splice/tcp-to-unix/4096-4 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
Splice/tcp-to-unix/8192-4 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
Splice/tcp-to-unix/16384-4 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
Splice/tcp-to-unix/32768-4 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
Splice/tcp-to-unix/65536-4 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
Splice/tcp-to-unix/131072-4 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
Splice/tcp-to-unix/262144-4 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
Splice/tcp-to-unix/524288-4 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
Splice/tcp-to-unix/1048576-4 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
geomean ² +0.00% ²
¹ all samples are equal
² summaries must be >0 to compute geomean
Change-Id: I829061b009a0929a8ef1a15c183793c0b9104dde
Reviewed-on: https://go-review.googlesource.com/c/go/+/472475
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2023-11-17 23:16:28 +00:00
Robert Griesemer
dd88f23a20
math/big: implement Rat.FloatPrec
...
goos: darwin
goarch: amd64
pkg: math/big
cpu: Intel(R) Core(TM) i7-8700B CPU @ 3.20GHz
BenchmarkFloatPrecExact/1-12 9380685 125.0 ns/op
BenchmarkFloatPrecExact/10-12 3780493 321.2 ns/op
BenchmarkFloatPrecExact/100-12 698272 1679 ns/op
BenchmarkFloatPrecExact/1000-12 117975 9113 ns/op
BenchmarkFloatPrecExact/10000-12 5913 192768 ns/op
BenchmarkFloatPrecExact/100000-12 164 7401817 ns/op
BenchmarkFloatPrecExact/1000000-12 4 293568523 ns/op
BenchmarkFloatPrecInexact/1-12 12836612 91.26 ns/op
BenchmarkFloatPrecInexact/10-12 10144908 114.9 ns/op
BenchmarkFloatPrecInexact/100-12 4121931 297.3 ns/op
BenchmarkFloatPrecInexact/1000-12 1275886 927.7 ns/op
BenchmarkFloatPrecInexact/10000-12 170392 6546 ns/op
BenchmarkFloatPrecInexact/100000-12 18307 65232 ns/op
BenchmarkFloatPrecInexact/1000000-12 1701 621412 ns/op
Fixes #50489 .
Change-Id: Ic952f00e35d42f2470ecab53df712721997eac94
Reviewed-on: https://go-review.googlesource.com/c/go/+/539299
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
2023-11-14 00:44:42 +00:00
Robert Griesemer
30de0b5ef4
go/types, types2: implement Alias proposal (export API)
...
This CL exports the previously unexported Alias type and
corresponding functions and methods per issue #63223 .
Whether Alias types are used or not is controlled by
the gotypesalias setting with the GODEBUG environment
variable. Setting gotypesalias to "1" enables the Alias
types:
GODEBUG=gotypesalias=1
By default, gotypesalias is not set.
Adjust test cases that enable/disable the use of Alias
types to use -gotypesalias=1 or -gotypesalias=0 rather
than -alias and -alias=false for consistency and to
avoid confusion.
For #63223 .
Change-Id: I51308cad3320981afac97dd8c6f6a416fdb0be55
Reviewed-on: https://go-review.googlesource.com/c/go/+/541737
Run-TryBot: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@google.com>
2023-11-13 20:18:45 +00:00
Robert Griesemer
8da6405e0d
go/types, types2: implement Info.PkgNameOf
...
For #62037 .
Change-Id: I354f6417232708278d3f2b2d5ea41ff48e08d6b6
Reviewed-on: https://go-review.googlesource.com/c/go/+/541575
Reviewed-by: Alan Donovan <adonovan@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
2023-11-11 02:02:35 +00:00
Andy Pan
3188758653
log/slog: add LogLoggerLevel to enable setting level on the default logger
...
Fixes #62418
Change-Id: I889a53d00c8a463b4d7ddb41893c000d7cd0e7b8
Reviewed-on: https://go-review.googlesource.com/c/go/+/525096
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
2023-11-10 21:25:30 +00:00
Roland Shoemaker
9f63534858
crypto/x509: implement AddCertWithConstraint
...
Adds the CertPool method AddCertWithConstraint, which allows adding a
certificate to a pool with an arbitrary constraint which cannot be
otherwise expressed in the certificate.
Fixes #57178
Change-Id: Ic5b0a22a66aefa5ba5d8ed5ef11389996b59862b
Reviewed-on: https://go-review.googlesource.com/c/go/+/519315
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Tatiana Bradley <tatianabradley@google.com>
Run-TryBot: Roland Shoemaker <roland@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
2023-11-09 19:41:40 +00:00
Robert Griesemer
43a27a7e8c
go/types: export Info.FileVersions
...
For #62605 .
Change-Id: Icf1a8332e4b60d77607716b55893ea2f39ae2f10
Reviewed-on: https://go-review.googlesource.com/c/go/+/540056
Run-TryBot: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-11-07 16:52:44 +00:00
Russ Cox
b54cae276a
go/version: add new package
...
go/version provides basic comparison of Go versions,
for use when deciding whether certain language features
are allowed, and so on.
See the proposal issue #62039 for more details.
Fixes #62039
Change-Id: Ibdfd4fe15afe406c46da568cb31feb42ec30b530
Reviewed-on: https://go-review.googlesource.com/c/go/+/538895
Auto-Submit: Russ Cox <rsc@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
2023-11-06 23:20:32 +00:00
Guoqi Chen
39d3c4ad35
debug/elf,cmd/link: add additional relocations for loong64
...
The Linker Relaxation feature on Loong64 is already supported in binutils 2.41.
The intermediate code generated after enabling this feature introduces three
reloc types R_LARCH_B26, R_LARCH_ADD32 and R_LARCH_SUB32.
The other relocation types are not currently used when running all.bash, but
in order to avoid the host tool chain making the decision to use it we don't
have to catch it every time.
The LoongArch ABI at here:
https://github.com/loongson/la-abi-specs/blob/release/la-abi.adoc
Corresponding binutils implementation:
https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=be1ebb6710a8f707bd4b0eecbd00f4f4964050e5
https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=1b6fccd28db14fffe75ff6755307047ef932c81e
Fixes #63725
Change-Id: I891115cfdbcf785ab494c881d5f9d1bf8748da8b
Reviewed-on: https://go-review.googlesource.com/c/go/+/537615
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Meidan Li <limeidan@loongson.cn>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2023-11-02 19:46:03 +00:00
Mateusz Poliwczak
dd84bb6824
crypto/x509: add new OID type and use it in Certificate
...
Fixes #60665
Change-Id: I814b7d4b26b964f74443584fb2048b3e27e3b675
GitHub-Last-Rev: 693c741c76golang/go#62096
Reviewed-on: https://go-review.googlesource.com/c/go/+/520535
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Mateusz Poliwczak <mpoliwczak34@gmail.com>
Auto-Submit: Roland Shoemaker <roland@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2023-10-31 19:22:19 +00:00
Russ Cox
8abde68f19
math/rand/v2: delete Mitchell/Reeds source
...
These slowdowns are because we are now using PCG instead of the
Mitchell/Reeds LFSR for the benchmarks. PCG is in fact a bit slower
(but generates statically far better random numbers).
goos: linux
goarch: amd64
pkg: math/rand/v2
cpu: AMD Ryzen 9 7950X 16-Core Processor
│ 01ff938549.amd64 │ afa459a2f0.amd64 │
│ sec/op │ sec/op vs base │
PCG_DXSM-32 1.490n ± 0% 1.488n ± 2% ~ (p=0.408 n=20)
SourceUint64-32 1.352n ± 1% 1.450n ± 3% +7.21% (p=0.000 n=20)
GlobalInt64-32 2.083n ± 0% 2.067n ± 2% ~ (p=0.223 n=20)
GlobalInt64Parallel-32 0.1035n ± 1% 0.1044n ± 2% ~ (p=0.010 n=20)
GlobalUint64-32 2.038n ± 1% 2.085n ± 0% +2.28% (p=0.000 n=20)
GlobalUint64Parallel-32 0.1006n ± 1% 0.1008n ± 1% ~ (p=0.733 n=20)
Int64-32 1.687n ± 2% 1.779n ± 1% +5.48% (p=0.000 n=20)
Uint64-32 1.674n ± 2% 1.854n ± 2% +10.69% (p=0.000 n=20)
GlobalIntN1000-32 3.135n ± 1% 3.140n ± 3% ~ (p=0.794 n=20)
IntN1000-32 2.478n ± 1% 2.496n ± 1% +0.73% (p=0.006 n=20)
Int64N1000-32 2.455n ± 1% 2.510n ± 2% +2.22% (p=0.000 n=20)
Int64N1e8-32 2.467n ± 2% 2.471n ± 2% ~ (p=0.050 n=20)
Int64N1e9-32 2.454n ± 1% 2.488n ± 2% +1.39% (p=0.000 n=20)
Int64N2e9-32 2.482n ± 1% 2.478n ± 2% ~ (p=0.066 n=20)
Int64N1e18-32 3.349n ± 2% 3.088n ± 1% -7.81% (p=0.000 n=20)
Int64N2e18-32 3.537n ± 1% 3.493n ± 1% -1.24% (p=0.002 n=20)
Int64N4e18-32 4.917n ± 0% 5.060n ± 2% +2.91% (p=0.000 n=20)
Int32N1000-32 2.386n ± 1% 2.620n ± 1% +9.76% (p=0.000 n=20)
Int32N1e8-32 2.366n ± 1% 2.652n ± 0% +12.11% (p=0.000 n=20)
Int32N1e9-32 2.355n ± 2% 2.644n ± 1% +12.32% (p=0.000 n=20)
Int32N2e9-32 2.371n ± 1% 2.619n ± 2% +10.48% (p=0.000 n=20)
Float32-32 2.245n ± 2% 2.261n ± 1% ~ (p=0.625 n=20)
Float64-32 2.235n ± 1% 2.241n ± 2% ~ (p=0.393 n=20)
ExpFloat64-32 3.813n ± 3% 3.716n ± 1% -2.53% (p=0.000 n=20)
NormFloat64-32 3.652n ± 2% 3.718n ± 1% +1.79% (p=0.006 n=20)
Perm3-32 33.12n ± 3% 34.11n ± 2% ~ (p=0.021 n=20)
Perm30-32 205.1n ± 1% 200.6n ± 0% -2.17% (p=0.000 n=20)
Perm30ViaShuffle-32 110.8n ± 1% 109.7n ± 1% -0.99% (p=0.002 n=20)
ShuffleOverhead-32 113.0n ± 1% 107.2n ± 1% -5.09% (p=0.000 n=20)
Concurrent-32 2.100n ± 0% 2.108n ± 6% ~ (p=0.103 n=20)
goos: darwin
goarch: arm64
pkg: math/rand/v2
│ 01ff938549.arm64 │ afa459a2f0.arm64 │
│ sec/op │ sec/op vs base │
PCG_DXSM-8 2.531n ± 0% 2.531n ± 0% ~ (p=0.763 n=20)
SourceUint64-8 2.258n ± 1% 2.531n ± 0% +12.09% (p=0.000 n=20)
GlobalInt64-8 2.167n ± 0% 2.177n ± 1% ~ (p=0.213 n=20)
GlobalInt64Parallel-8 0.4310n ± 0% 0.4319n ± 0% ~ (p=0.027 n=20)
GlobalUint64-8 2.182n ± 1% 2.185n ± 1% ~ (p=0.683 n=20)
GlobalUint64Parallel-8 0.4297n ± 0% 0.4295n ± 1% ~ (p=0.941 n=20)
Int64-8 2.472n ± 1% 4.104n ± 0% +66.00% (p=0.000 n=20)
Uint64-8 2.449n ± 1% 4.080n ± 0% +66.60% (p=0.000 n=20)
GlobalIntN1000-8 2.814n ± 2% 2.814n ± 1% ~ (p=0.972 n=20)
IntN1000-8 2.998n ± 2% 4.140n ± 0% +38.09% (p=0.000 n=20)
Int64N1000-8 2.949n ± 2% 4.139n ± 0% +40.35% (p=0.000 n=20)
Int64N1e8-8 2.953n ± 2% 4.140n ± 0% +40.22% (p=0.000 n=20)
Int64N1e9-8 2.950n ± 0% 4.139n ± 0% +40.32% (p=0.000 n=20)
Int64N2e9-8 2.946n ± 2% 4.140n ± 0% +40.53% (p=0.000 n=20)
Int64N1e18-8 3.779n ± 1% 5.273n ± 0% +39.52% (p=0.000 n=20)
Int64N2e18-8 4.370n ± 1% 6.059n ± 0% +38.65% (p=0.000 n=20)
Int64N4e18-8 6.544n ± 1% 8.803n ± 0% +34.52% (p=0.000 n=20)
Int32N1000-8 2.950n ± 0% 4.131n ± 0% +40.06% (p=0.000 n=20)
Int32N1e8-8 2.950n ± 2% 4.131n ± 0% +40.03% (p=0.000 n=20)
Int32N1e9-8 2.951n ± 2% 4.131n ± 0% +39.99% (p=0.000 n=20)
Int32N2e9-8 2.950n ± 2% 4.131n ± 0% +40.03% (p=0.000 n=20)
Float32-8 3.441n ± 0% 4.110n ± 0% +19.44% (p=0.000 n=20)
Float64-8 3.442n ± 0% 4.104n ± 0% +19.24% (p=0.000 n=20)
ExpFloat64-8 4.481n ± 0% 5.338n ± 0% +19.11% (p=0.000 n=20)
NormFloat64-8 4.725n ± 0% 5.731n ± 0% +21.28% (p=0.000 n=20)
Perm3-8 26.55n ± 0% 26.62n ± 0% +0.28% (p=0.000 n=20)
Perm30-8 181.9n ± 0% 194.6n ± 2% +6.98% (p=0.000 n=20)
Perm30ViaShuffle-8 142.9n ± 0% 156.4n ± 0% +9.45% (p=0.000 n=20)
ShuffleOverhead-8 120.8n ± 2% 125.8n ± 0% +4.10% (p=0.000 n=20)
Concurrent-8 2.421n ± 6% 2.654n ± 6% +9.67% (p=0.002 n=20)
goos: linux
goarch: 386
pkg: math/rand/v2
cpu: AMD Ryzen 9 7950X 16-Core Processor
│ 01ff938549.386 │ afa459a2f0.386 │
│ sec/op │ sec/op vs base │
PCG_DXSM-32 7.613n ± 1% 7.793n ± 2% +2.38% (p=0.000 n=20)
SourceUint64-32 2.069n ± 0% 7.680n ± 1% +271.19% (p=0.000 n=20)
GlobalInt64-32 3.456n ± 1% 3.474n ± 3% ~ (p=0.654 n=20)
GlobalInt64Parallel-32 0.3252n ± 0% 0.3253n ± 0% ~ (p=0.952 n=20)
GlobalUint64-32 3.573n ± 1% 3.433n ± 2% -3.92% (p=0.000 n=20)
GlobalUint64Parallel-32 0.3159n ± 0% 0.3156n ± 0% ~ (p=0.223 n=20)
Int64-32 2.562n ± 2% 7.707n ± 1% +200.74% (p=0.000 n=20)
Uint64-32 2.592n ± 0% 7.714n ± 1% +197.65% (p=0.000 n=20)
GlobalIntN1000-32 6.266n ± 2% 6.236n ± 1% ~ (p=0.039 n=20)
IntN1000-32 4.724n ± 2% 10.410n ± 1% +120.39% (p=0.000 n=20)
Int64N1000-32 5.490n ± 2% 10.975n ± 2% +99.89% (p=0.000 n=20)
Int64N1e8-32 5.513n ± 2% 10.980n ± 1% +99.15% (p=0.000 n=20)
Int64N1e9-32 5.476n ± 1% 10.950n ± 0% +99.96% (p=0.000 n=20)
Int64N2e9-32 5.501n ± 2% 11.110n ± 1% +101.96% (p=0.000 n=20)
Int64N1e18-32 9.043n ± 2% 15.180n ± 2% +67.86% (p=0.000 n=20)
Int64N2e18-32 9.601n ± 2% 15.610n ± 1% +62.60% (p=0.000 n=20)
Int64N4e18-32 12.00n ± 1% 19.23n ± 2% +60.14% (p=0.000 n=20)
Int32N1000-32 4.829n ± 2% 10.345n ± 1% +114.25% (p=0.000 n=20)
Int32N1e8-32 4.825n ± 2% 10.330n ± 1% +114.09% (p=0.000 n=20)
Int32N1e9-32 4.830n ± 2% 10.350n ± 1% +114.26% (p=0.000 n=20)
Int32N2e9-32 4.750n ± 2% 10.345n ± 1% +117.81% (p=0.000 n=20)
Float32-32 10.89n ± 4% 13.57n ± 1% +24.61% (p=0.000 n=20)
Float64-32 19.60n ± 4% 22.95n ± 4% +17.12% (p=0.000 n=20)
ExpFloat64-32 12.96n ± 3% 15.23n ± 2% +17.47% (p=0.000 n=20)
NormFloat64-32 7.516n ± 1% 13.780n ± 1% +83.34% (p=0.000 n=20)
Perm3-32 36.78n ± 2% 46.62n ± 2% +26.72% (p=0.000 n=20)
Perm30-32 238.9n ± 2% 400.7n ± 1% +67.73% (p=0.000 n=20)
Perm30ViaShuffle-32 189.7n ± 2% 350.5n ± 1% +84.79% (p=0.000 n=20)
ShuffleOverhead-32 159.8n ± 1% 326.0n ± 2% +104.01% (p=0.000 n=20)
Concurrent-32 3.286n ± 1% 3.290n ± 0% ~ (p=0.743 n=20)
On the other hand, compared to the original "update benchmarks" CL,
the cleanups we've made more than compensate for PCG being a bit
slower than LFSR, at least on 64-bit x86. ARM64 (Apple M1) is a bit
slower: perhaps the 64x64→128 multiply is slower there for some reason.
386 is noticeably slower, but it's also a non-SSA backend.
goos: linux
goarch: amd64
pkg: math/rand/v2
cpu: AMD Ryzen 9 7950X 16-Core Processor
│ 220860f76f.amd64 │ afa459a2f0.amd64 │
│ sec/op │ sec/op vs base │
SourceUint64-32 1.555n ± 1% 1.450n ± 3% -6.78% (p=0.000 n=20)
GlobalInt64-32 2.071n ± 1% 2.067n ± 2% ~ (p=0.673 n=20)
GlobalInt63Parallel-32 0.1023n ± 1%
GlobalInt64Parallel-32 0.1044n ± 2%
GlobalUint64-32 5.193n ± 1% 2.085n ± 0% -59.86% (p=0.000 n=20)
GlobalUint64Parallel-32 0.2341n ± 0% 0.1008n ± 1% -56.93% (p=0.000 n=20)
Int64-32 2.056n ± 2% 1.779n ± 1% -13.47% (p=0.000 n=20)
Uint64-32 2.077n ± 2% 1.854n ± 2% -10.74% (p=0.000 n=20)
GlobalIntN1000-32 4.077n ± 2% 3.140n ± 3% -22.98% (p=0.000 n=20)
IntN1000-32 3.476n ± 2% 2.496n ± 1% -28.19% (p=0.000 n=20)
Int64N1000-32 3.059n ± 1% 2.510n ± 2% -17.96% (p=0.000 n=20)
Int64N1e8-32 2.942n ± 1% 2.471n ± 2% -15.98% (p=0.000 n=20)
Int64N1e9-32 2.932n ± 1% 2.488n ± 2% -15.14% (p=0.000 n=20)
Int64N2e9-32 2.925n ± 1% 2.478n ± 2% -15.30% (p=0.000 n=20)
Int64N1e18-32 3.116n ± 1% 3.088n ± 1% ~ (p=0.013 n=20)
Int64N2e18-32 4.067n ± 1% 3.493n ± 1% -14.11% (p=0.000 n=20)
Int64N4e18-32 4.054n ± 1% 5.060n ± 2% +24.80% (p=0.000 n=20)
Int32N1000-32 2.951n ± 1% 2.620n ± 1% -11.22% (p=0.000 n=20)
Int32N1e8-32 3.102n ± 1% 2.652n ± 0% -14.50% (p=0.000 n=20)
Int32N1e9-32 3.535n ± 1% 2.644n ± 1% -25.20% (p=0.000 n=20)
Int32N2e9-32 3.514n ± 1% 2.619n ± 2% -25.47% (p=0.000 n=20)
Float32-32 2.760n ± 1% 2.261n ± 1% -18.06% (p=0.000 n=20)
Float64-32 2.284n ± 1% 2.241n ± 2% ~ (p=0.016 n=20)
ExpFloat64-32 3.757n ± 1% 3.716n ± 1% ~ (p=0.034 n=20)
NormFloat64-32 3.837n ± 1% 3.718n ± 1% -3.09% (p=0.000 n=20)
Perm3-32 35.23n ± 2% 34.11n ± 2% -3.19% (p=0.000 n=20)
Perm30-32 208.8n ± 1% 200.6n ± 0% -3.93% (p=0.000 n=20)
Perm30ViaShuffle-32 111.7n ± 1% 109.7n ± 1% -1.84% (p=0.000 n=20)
ShuffleOverhead-32 101.1n ± 1% 107.2n ± 1% +6.03% (p=0.000 n=20)
Concurrent-32 2.108n ± 7% 2.108n ± 6% ~ (p=0.644 n=20)
PCG_DXSM-32 1.488n ± 2%
goos: darwin
goarch: arm64
pkg: math/rand/v2
cpu: Apple M1
│ 220860f76f.arm64 │ afa459a2f0.arm64 │
│ sec/op │ sec/op vs base │
SourceUint64-8 2.316n ± 1% 2.531n ± 0% +9.33% (p=0.000 n=20)
GlobalInt64-8 2.183n ± 1% 2.177n ± 1% ~ (p=0.533 n=20)
GlobalInt63Parallel-8 0.4331n ± 0%
GlobalInt64Parallel-8 0.4319n ± 0%
GlobalUint64-8 4.377n ± 2% 2.185n ± 1% -50.07% (p=0.000 n=20)
GlobalUint64Parallel-8 0.9237n ± 0% 0.4295n ± 1% -53.50% (p=0.000 n=20)
Int64-8 2.538n ± 1% 4.104n ± 0% +61.68% (p=0.000 n=20)
Uint64-8 2.604n ± 1% 4.080n ± 0% +56.68% (p=0.000 n=20)
GlobalIntN1000-8 3.857n ± 2% 2.814n ± 1% -27.04% (p=0.000 n=20)
IntN1000-8 3.822n ± 2% 4.140n ± 0% +8.32% (p=0.000 n=20)
Int64N1000-8 3.318n ± 0% 4.139n ± 0% +24.74% (p=0.000 n=20)
Int64N1e8-8 3.349n ± 1% 4.140n ± 0% +23.64% (p=0.000 n=20)
Int64N1e9-8 3.317n ± 2% 4.139n ± 0% +24.80% (p=0.000 n=20)
Int64N2e9-8 3.317n ± 2% 4.140n ± 0% +24.81% (p=0.000 n=20)
Int64N1e18-8 3.542n ± 1% 5.273n ± 0% +48.85% (p=0.000 n=20)
Int64N2e18-8 5.087n ± 0% 6.059n ± 0% +19.12% (p=0.000 n=20)
Int64N4e18-8 5.084n ± 0% 8.803n ± 0% +73.16% (p=0.000 n=20)
Int32N1000-8 3.208n ± 2% 4.131n ± 0% +28.79% (p=0.000 n=20)
Int32N1e8-8 3.610n ± 1% 4.131n ± 0% +14.43% (p=0.000 n=20)
Int32N1e9-8 4.235n ± 0% 4.131n ± 0% -2.44% (p=0.000 n=20)
Int32N2e9-8 4.229n ± 1% 4.131n ± 0% -2.33% (p=0.000 n=20)
Float32-8 3.468n ± 0% 4.110n ± 0% +18.50% (p=0.000 n=20)
Float64-8 3.447n ± 0% 4.104n ± 0% +19.05% (p=0.000 n=20)
ExpFloat64-8 4.567n ± 0% 5.338n ± 0% +16.86% (p=0.000 n=20)
NormFloat64-8 4.821n ± 0% 5.731n ± 0% +18.89% (p=0.000 n=20)
Perm3-8 28.89n ± 0% 26.62n ± 0% -7.84% (p=0.000 n=20)
Perm30-8 175.7n ± 0% 194.6n ± 2% +10.76% (p=0.000 n=20)
Perm30ViaShuffle-8 153.5n ± 0% 156.4n ± 0% +1.86% (p=0.000 n=20)
ShuffleOverhead-8 119.8n ± 1% 125.8n ± 0% +4.97% (p=0.000 n=20)
Concurrent-8 2.433n ± 3% 2.654n ± 6% +9.13% (p=0.001 n=20)
PCG_DXSM-8 2.531n ± 0%
goos: linux
goarch: 386
pkg: math/rand/v2
cpu: AMD Ryzen 9 7950X 16-Core Processor
│ 220860f76f.386 │ afa459a2f0.386 │
│ sec/op │ sec/op vs base │
SourceUint64-32 2.370n ± 1% 7.680n ± 1% +224.05% (p=0.000 n=20)
GlobalInt64-32 3.569n ± 1% 3.474n ± 3% -2.66% (p=0.001 n=20)
GlobalInt63Parallel-32 0.3221n ± 1%
GlobalInt64Parallel-32 0.3253n ± 0%
GlobalUint64-32 8.797n ± 10% 3.433n ± 2% -60.98% (p=0.000 n=20)
GlobalUint64Parallel-32 0.6351n ± 0% 0.3156n ± 0% -50.31% (p=0.000 n=20)
Int64-32 2.612n ± 2% 7.707n ± 1% +195.04% (p=0.000 n=20)
Uint64-32 3.350n ± 1% 7.714n ± 1% +130.25% (p=0.000 n=20)
GlobalIntN1000-32 5.892n ± 1% 6.236n ± 1% +5.82% (p=0.000 n=20)
IntN1000-32 4.546n ± 1% 10.410n ± 1% +128.97% (p=0.000 n=20)
Int64N1000-32 14.59n ± 1% 10.97n ± 2% -24.75% (p=0.000 n=20)
Int64N1e8-32 14.76n ± 2% 10.98n ± 1% -25.58% (p=0.000 n=20)
Int64N1e9-32 16.57n ± 1% 10.95n ± 0% -33.90% (p=0.000 n=20)
Int64N2e9-32 14.54n ± 1% 11.11n ± 1% -23.62% (p=0.000 n=20)
Int64N1e18-32 16.14n ± 1% 15.18n ± 2% -5.95% (p=0.000 n=20)
Int64N2e18-32 18.10n ± 1% 15.61n ± 1% -13.73% (p=0.000 n=20)
Int64N4e18-32 18.65n ± 1% 19.23n ± 2% +3.08% (p=0.000 n=20)
Int32N1000-32 3.560n ± 1% 10.345n ± 1% +190.55% (p=0.000 n=20)
Int32N1e8-32 3.770n ± 2% 10.330n ± 1% +174.01% (p=0.000 n=20)
Int32N1e9-32 4.098n ± 0% 10.350n ± 1% +152.53% (p=0.000 n=20)
Int32N2e9-32 4.179n ± 1% 10.345n ± 1% +147.52% (p=0.000 n=20)
Float32-32 21.18n ± 4% 13.57n ± 1% -35.93% (p=0.000 n=20)
Float64-32 20.60n ± 2% 22.95n ± 4% +11.41% (p=0.000 n=20)
ExpFloat64-32 13.07n ± 0% 15.23n ± 2% +16.48% (p=0.000 n=20)
NormFloat64-32 7.738n ± 2% 13.780n ± 1% +78.08% (p=0.000 n=20)
Perm3-32 36.73n ± 1% 46.62n ± 2% +26.91% (p=0.000 n=20)
Perm30-32 211.9n ± 1% 400.7n ± 1% +89.05% (p=0.000 n=20)
Perm30ViaShuffle-32 165.2n ± 1% 350.5n ± 1% +112.20% (p=0.000 n=20)
ShuffleOverhead-32 133.9n ± 1% 326.0n ± 2% +143.37% (p=0.000 n=20)
Concurrent-32 3.287n ± 2% 3.290n ± 0% ~ (p=0.365 n=20)
PCG_DXSM-32 7.793n ± 2%
For #61716 .
Change-Id: I4e9c0525b5f84a2ac46f23da9e365495e2d05777
Reviewed-on: https://go-review.googlesource.com/c/go/+/502506
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Russ Cox <rsc@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2023-10-30 17:09:26 +00:00
Russ Cox
8631fcbf31
math/rand/v2: add PCG-DXSM
...
For the original math/rand, we ported Plan 9's random number
generator, which was a refinement by Ken Thompson of an algorithm
by Don Mitchell and Jim Reeds, which Mitchell in turn recalls as
having been derived from an algorithm by Marsaglia. At its core,
it is an additive lagged Fibonacci generator (ALFG).
Whatever the details of the history, this generator is nowhere
near the current state of the art for simple, pseudo-random
generators.
This CL adds an implementation of Melissa O'Neill's PCG, specifically
the variant PCG-DXSM, which she defined after writing the PCG paper
and which is now the default in Numpy. The update is slightly slower
(a few multiplies and adds, instead of a few adds), but the state
is dramatically smaller (2 words instead of 607). The statistical
output properties are better too.
A followup CL will delete the old generator.
PCG is the only change here, so no benchmarks should be affected.
Including them anyway as further evidence for caution.
goos: linux
goarch: amd64
pkg: math/rand/v2
cpu: AMD Ryzen 9 7950X 16-Core Processor
│ 8993506f2f.amd64 │ 01ff938549.amd64 │
│ sec/op │ sec/op vs base │
SourceUint64-32 1.325n ± 1% 1.352n ± 1% +2.00% (p=0.000 n=20)
GlobalInt64-32 2.240n ± 1% 2.083n ± 0% -7.03% (p=0.000 n=20)
GlobalInt64Parallel-32 0.1041n ± 1% 0.1035n ± 1% ~ (p=0.064 n=20)
GlobalUint64-32 2.072n ± 3% 2.038n ± 1% ~ (p=0.089 n=20)
GlobalUint64Parallel-32 0.1008n ± 1% 0.1006n ± 1% ~ (p=0.804 n=20)
Int64-32 1.716n ± 1% 1.687n ± 2% ~ (p=0.045 n=20)
Uint64-32 1.665n ± 1% 1.674n ± 2% ~ (p=0.878 n=20)
GlobalIntN1000-32 3.335n ± 1% 3.135n ± 1% -6.00% (p=0.000 n=20)
IntN1000-32 2.484n ± 1% 2.478n ± 1% ~ (p=0.085 n=20)
Int64N1000-32 2.502n ± 2% 2.455n ± 1% -1.88% (p=0.002 n=20)
Int64N1e8-32 2.484n ± 2% 2.467n ± 2% ~ (p=0.048 n=20)
Int64N1e9-32 2.502n ± 0% 2.454n ± 1% -1.92% (p=0.000 n=20)
Int64N2e9-32 2.502n ± 0% 2.482n ± 1% -0.76% (p=0.000 n=20)
Int64N1e18-32 3.201n ± 1% 3.349n ± 2% +4.62% (p=0.000 n=20)
Int64N2e18-32 3.504n ± 1% 3.537n ± 1% ~ (p=0.185 n=20)
Int64N4e18-32 4.873n ± 1% 4.917n ± 0% +0.90% (p=0.000 n=20)
Int32N1000-32 2.639n ± 1% 2.386n ± 1% -9.57% (p=0.000 n=20)
Int32N1e8-32 2.686n ± 2% 2.366n ± 1% -11.91% (p=0.000 n=20)
Int32N1e9-32 2.636n ± 1% 2.355n ± 2% -10.70% (p=0.000 n=20)
Int32N2e9-32 2.660n ± 1% 2.371n ± 1% -10.88% (p=0.000 n=20)
Float32-32 2.261n ± 1% 2.245n ± 2% ~ (p=0.752 n=20)
Float64-32 2.280n ± 1% 2.235n ± 1% -1.97% (p=0.007 n=20)
ExpFloat64-32 3.891n ± 1% 3.813n ± 3% ~ (p=0.087 n=20)
NormFloat64-32 3.711n ± 1% 3.652n ± 2% ~ (p=0.021 n=20)
Perm3-32 32.60n ± 2% 33.12n ± 3% ~ (p=0.107 n=20)
Perm30-32 204.2n ± 0% 205.1n ± 1% ~ (p=0.358 n=20)
Perm30ViaShuffle-32 121.7n ± 2% 110.8n ± 1% -8.96% (p=0.000 n=20)
ShuffleOverhead-32 106.2n ± 2% 113.0n ± 1% +6.36% (p=0.000 n=20)
Concurrent-32 2.190n ± 5% 2.100n ± 0% -4.13% (p=0.001 n=20)
PCG_DXSM-32 1.490n ± 0%
goos: darwin
goarch: arm64
pkg: math/rand/v2
cpu: Apple M1
│ 8993506f2f.arm64 │ 01ff938549.arm64 │
│ sec/op │ sec/op vs base │
SourceUint64-8 2.271n ± 0% 2.258n ± 1% ~ (p=0.167 n=20)
GlobalInt64-8 2.161n ± 1% 2.167n ± 0% ~ (p=0.693 n=20)
GlobalInt64Parallel-8 0.4303n ± 0% 0.4310n ± 0% ~ (p=0.051 n=20)
GlobalUint64-8 2.164n ± 1% 2.182n ± 1% ~ (p=0.042 n=20)
GlobalUint64Parallel-8 0.4287n ± 0% 0.4297n ± 0% ~ (p=0.082 n=20)
Int64-8 2.478n ± 1% 2.472n ± 1% ~ (p=0.151 n=20)
Uint64-8 2.460n ± 1% 2.449n ± 1% ~ (p=0.013 n=20)
GlobalIntN1000-8 2.814n ± 2% 2.814n ± 2% ~ (p=0.821 n=20)
IntN1000-8 3.003n ± 2% 2.998n ± 2% ~ (p=0.024 n=20)
Int64N1000-8 2.954n ± 0% 2.949n ± 2% ~ (p=0.192 n=20)
Int64N1e8-8 2.956n ± 0% 2.953n ± 2% ~ (p=0.109 n=20)
Int64N1e9-8 3.325n ± 0% 2.950n ± 0% -11.26% (p=0.000 n=20)
Int64N2e9-8 2.956n ± 2% 2.946n ± 2% ~ (p=0.027 n=20)
Int64N1e18-8 3.780n ± 1% 3.779n ± 1% ~ (p=0.815 n=20)
Int64N2e18-8 4.385n ± 0% 4.370n ± 1% ~ (p=0.402 n=20)
Int64N4e18-8 6.527n ± 0% 6.544n ± 1% ~ (p=0.140 n=20)
Int32N1000-8 2.964n ± 1% 2.950n ± 0% -0.47% (p=0.002 n=20)
Int32N1e8-8 2.964n ± 1% 2.950n ± 2% ~ (p=0.013 n=20)
Int32N1e9-8 2.963n ± 2% 2.951n ± 2% ~ (p=0.062 n=20)
Int32N2e9-8 2.961n ± 2% 2.950n ± 2% -0.37% (p=0.002 n=20)
Float32-8 3.442n ± 0% 3.441n ± 0% ~ (p=0.211 n=20)
Float64-8 3.442n ± 0% 3.442n ± 0% ~ (p=0.067 n=20)
ExpFloat64-8 4.472n ± 0% 4.481n ± 0% +0.20% (p=0.000 n=20)
NormFloat64-8 4.734n ± 0% 4.725n ± 0% -0.19% (p=0.003 n=20)
Perm3-8 26.55n ± 0% 26.55n ± 0% ~ (p=0.833 n=20)
Perm30-8 181.9n ± 0% 181.9n ± 0% -0.03% (p=0.004 n=20)
Perm30ViaShuffle-8 143.1n ± 0% 142.9n ± 0% ~ (p=0.204 n=20)
ShuffleOverhead-8 120.6n ± 1% 120.8n ± 2% ~ (p=0.102 n=20)
Concurrent-8 2.357n ± 2% 2.421n ± 6% ~ (p=0.016 n=20)
PCG_DXSM-8 2.531n ± 0%
goos: linux
goarch: 386
pkg: math/rand/v2
cpu: AMD Ryzen 9 7950X 16-Core Processor
│ 8993506f2f.386 │ 01ff938549.386 │
│ sec/op │ sec/op vs base │
SourceUint64-32 2.102n ± 2% 2.069n ± 0% ~ (p=0.021 n=20)
GlobalInt64-32 3.542n ± 2% 3.456n ± 1% -2.44% (p=0.001 n=20)
GlobalInt64Parallel-32 0.3202n ± 0% 0.3252n ± 0% +1.56% (p=0.000 n=20)
GlobalUint64-32 3.507n ± 1% 3.573n ± 1% +1.87% (p=0.000 n=20)
GlobalUint64Parallel-32 0.3170n ± 1% 0.3159n ± 0% ~ (p=0.167 n=20)
Int64-32 2.516n ± 1% 2.562n ± 2% ~ (p=0.016 n=20)
Uint64-32 2.544n ± 1% 2.592n ± 0% +1.85% (p=0.000 n=20)
GlobalIntN1000-32 6.237n ± 1% 6.266n ± 2% ~ (p=0.268 n=20)
IntN1000-32 4.670n ± 2% 4.724n ± 2% ~ (p=0.644 n=20)
Int64N1000-32 5.412n ± 1% 5.490n ± 2% ~ (p=0.159 n=20)
Int64N1e8-32 5.414n ± 2% 5.513n ± 2% ~ (p=0.129 n=20)
Int64N1e9-32 5.473n ± 1% 5.476n ± 1% ~ (p=0.723 n=20)
Int64N2e9-32 5.487n ± 1% 5.501n ± 2% ~ (p=0.481 n=20)
Int64N1e18-32 8.901n ± 2% 9.043n ± 2% ~ (p=0.330 n=20)
Int64N2e18-32 9.521n ± 1% 9.601n ± 2% ~ (p=0.703 n=20)
Int64N4e18-32 11.92n ± 1% 12.00n ± 1% ~ (p=0.489 n=20)
Int32N1000-32 4.785n ± 1% 4.829n ± 2% ~ (p=0.402 n=20)
Int32N1e8-32 4.748n ± 1% 4.825n ± 2% ~ (p=0.218 n=20)
Int32N1e9-32 4.810n ± 1% 4.830n ± 2% ~ (p=0.794 n=20)
Int32N2e9-32 4.812n ± 1% 4.750n ± 2% ~ (p=0.057 n=20)
Float32-32 10.48n ± 4% 10.89n ± 4% ~ (p=0.162 n=20)
Float64-32 19.79n ± 3% 19.60n ± 4% ~ (p=0.668 n=20)
ExpFloat64-32 12.91n ± 3% 12.96n ± 3% ~ (p=1.000 n=20)
NormFloat64-32 7.462n ± 1% 7.516n ± 1% ~ (p=0.051 n=20)
Perm3-32 35.98n ± 2% 36.78n ± 2% ~ (p=0.033 n=20)
Perm30-32 241.5n ± 1% 238.9n ± 2% ~ (p=0.126 n=20)
Perm30ViaShuffle-32 187.3n ± 2% 189.7n ± 2% ~ (p=0.387 n=20)
ShuffleOverhead-32 160.2n ± 1% 159.8n ± 1% ~ (p=0.256 n=20)
Concurrent-32 3.308n ± 3% 3.286n ± 1% ~ (p=0.038 n=20)
PCG_DXSM-32 7.613n ± 1%
For #61716 .
Change-Id: Icb274ca1f782504d658305a40159b4ae6a2f3f1d
Reviewed-on: https://go-review.googlesource.com/c/go/+/502505
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Rob Pike <r@golang.org>
2023-10-30 17:09:23 +00:00
Russ Cox
c266587846
math/rand/v2: add, optimize N, UintN, Uint32N, Uint64N
...
Now that we can break the value stream, we can take advantage
of better algorithms that have been suggested since the original
code was written.
Also optimizes IntN, Int32N, Int64N, Perm (indirectly).
All the N variants (IntN, Int32N, Int64N, UintN, N, etc) now
return the same values given a Source and parameter n, so that
for example uint(r.IntN(10)) and r.UintN(10) and r.N(uint(10))
are completely interchangeable.
Int64N4e18 gets slower but that is a near worst case for
the algorithm and is extremely unlikely in practice.
32-bit Int32N variants got slower too, by 15-30%, in exchange
for speeding up everything on 64-bit systems and consistency
across the N functions.
Also rename previously missed benchmark
GlobalInt63Parallel to GlobalInt64Parallel.
goos: linux
goarch: amd64
pkg: math/rand/v2
cpu: AMD Ryzen 9 7950X 16-Core Processor
│ 11ad9fdddc.amd64 │ 4d84a369d1.amd64 │
│ sec/op │ sec/op vs base │
SourceUint64-32 1.335n ± 1% 1.348n ± 2% ~ (p=0.335 n=20)
GlobalInt64-32 2.046n ± 1% 2.082n ± 2% ~ (p=0.310 n=20)
GlobalInt63Parallel-32 0.1037n ± 1%
GlobalInt64Parallel-32 0.1036n ± 1%
GlobalUint64-32 2.075n ± 0% 2.077n ± 2% ~ (p=0.228 n=20)
GlobalUint64Parallel-32 0.1013n ± 1% 0.1012n ± 1% ~ (p=0.878 n=20)
Int64-32 1.726n ± 2% 1.750n ± 0% +1.39% (p=0.000 n=20)
Uint64-32 1.673n ± 1% 1.707n ± 2% +2.03% (p=0.002 n=20)
GlobalIntN1000-32 3.895n ± 2% 3.192n ± 1% -18.05% (p=0.000 n=20)
IntN1000-32 3.403n ± 1% 2.462n ± 2% -27.65% (p=0.000 n=20)
Int64N1000-32 3.053n ± 2% 2.470n ± 1% -19.11% (p=0.000 n=20)
Int64N1e8-32 2.718n ± 1% 2.503n ± 2% -7.91% (p=0.000 n=20)
Int64N1e9-32 2.712n ± 1% 2.487n ± 1% -8.31% (p=0.000 n=20)
Int64N2e9-32 2.690n ± 1% 2.487n ± 1% -7.57% (p=0.000 n=20)
Int64N1e18-32 3.084n ± 2% 3.006n ± 2% -2.53% (p=0.000 n=20)
Int64N2e18-32 4.026n ± 1% 3.368n ± 1% -16.33% (p=0.000 n=20)
Int64N4e18-32 4.049n ± 2% 4.763n ± 1% +17.62% (p=0.000 n=20)
Int32N1000-32 2.730n ± 0% 2.403n ± 1% -11.94% (p=0.000 n=20)
Int32N1e8-32 2.916n ± 2% 2.405n ± 1% -17.53% (p=0.000 n=20)
Int32N1e9-32 3.375n ± 1% 2.402n ± 2% -28.83% (p=0.000 n=20)
Int32N2e9-32 3.292n ± 1% 2.384n ± 1% -27.58% (p=0.000 n=20)
Float32-32 2.673n ± 1% 2.641n ± 2% ~ (p=0.147 n=20)
Float64-32 2.485n ± 1% 2.483n ± 1% ~ (p=0.804 n=20)
ExpFloat64-32 3.577n ± 2% 3.486n ± 2% -2.57% (p=0.000 n=20)
NormFloat64-32 3.797n ± 2% 3.648n ± 1% -3.92% (p=0.000 n=20)
Perm3-32 35.79n ± 2% 33.04n ± 1% -7.68% (p=0.000 n=20)
Perm30-32 205.1n ± 1% 171.9n ± 1% -16.14% (p=0.000 n=20)
Perm30ViaShuffle-32 111.2n ± 2% 100.3n ± 1% -9.76% (p=0.000 n=20)
ShuffleOverhead-32 100.5n ± 2% 102.5n ± 1% +1.99% (p=0.007 n=20)
Concurrent-32 2.188n ± 5% 2.101n ± 0% ~ (p=0.013 n=20)
goos: darwin
goarch: arm64
pkg: math/rand/v2
cpu: Apple M1
│ 11ad9fdddc.arm64 │ 4d84a369d1.arm64 │
│ sec/op │ sec/op vs base │
SourceUint64-8 2.272n ± 1% 2.261n ± 1% ~ (p=0.172 n=20)
GlobalInt64-8 2.155n ± 1% 2.160n ± 1% ~ (p=0.482 n=20)
GlobalInt63Parallel-8 0.4352n ± 0%
GlobalInt64Parallel-8 0.4299n ± 0%
GlobalUint64-8 2.173n ± 1% 2.169n ± 1% ~ (p=0.262 n=20)
GlobalUint64Parallel-8 0.4340n ± 0% 0.4293n ± 1% -1.08% (p=0.000 n=20)
Int64-8 2.544n ± 1% 2.473n ± 1% -2.83% (p=0.000 n=20)
Uint64-8 2.552n ± 1% 2.453n ± 1% -3.90% (p=0.000 n=20)
GlobalIntN1000-8 3.856n ± 0% 2.814n ± 2% -27.02% (p=0.000 n=20)
IntN1000-8 3.820n ± 0% 2.933n ± 2% -23.22% (p=0.000 n=20)
Int64N1000-8 3.219n ± 2% 2.934n ± 2% -8.85% (p=0.000 n=20)
Int64N1e8-8 3.221n ± 2% 2.935n ± 2% -8.91% (p=0.000 n=20)
Int64N1e9-8 3.276n ± 2% 2.934n ± 2% -10.44% (p=0.000 n=20)
Int64N2e9-8 3.217n ± 0% 2.935n ± 2% -8.78% (p=0.000 n=20)
Int64N1e18-8 3.502n ± 2% 3.778n ± 1% +7.91% (p=0.000 n=20)
Int64N2e18-8 4.968n ± 1% 4.359n ± 1% -12.26% (p=0.000 n=20)
Int64N4e18-8 4.963n ± 0% 6.546n ± 1% +31.92% (p=0.000 n=20)
Int32N1000-8 3.189n ± 1% 2.940n ± 2% -7.81% (p=0.000 n=20)
Int32N1e8-8 3.514n ± 1% 2.937n ± 2% -16.41% (p=0.000 n=20)
Int32N1e9-8 4.133n ± 0% 2.938n ± 0% -28.91% (p=0.000 n=20)
Int32N2e9-8 4.137n ± 0% 2.938n ± 2% -28.97% (p=0.000 n=20)
Float32-8 3.468n ± 1% 3.486n ± 0% +0.52% (p=0.000 n=20)
Float64-8 3.478n ± 0% 3.480n ± 0% ~ (p=0.063 n=20)
ExpFloat64-8 4.563n ± 0% 4.533n ± 0% -0.67% (p=0.000 n=20)
NormFloat64-8 4.768n ± 0% 4.764n ± 0% -0.07% (p=0.001 n=20)
Perm3-8 28.94n ± 0% 26.66n ± 0% -7.88% (p=0.000 n=20)
Perm30-8 175.9n ± 0% 143.4n ± 0% -18.50% (p=0.000 n=20)
Perm30ViaShuffle-8 152.6n ± 1% 142.9n ± 0% -6.29% (p=0.000 n=20)
ShuffleOverhead-8 119.6n ± 1% 120.7n ± 0% +0.96% (p=0.000 n=20)
Concurrent-8 2.452n ± 3% 2.360n ± 2% -3.73% (p=0.007 n=20)
goos: linux
goarch: 386
pkg: math/rand/v2
cpu: AMD Ryzen 9 7950X 16-Core Processor
│ 11ad9fdddc.386 │ 4d84a369d1.386 │
│ sec/op │ sec/op vs base │
SourceUint64-32 2.091n ± 1% 2.101n ± 2% ~ (p=0.672 n=20)
GlobalInt64-32 3.514n ± 2% 3.518n ± 2% ~ (p=0.723 n=20)
GlobalInt63Parallel-32 0.3197n ± 0%
GlobalInt64Parallel-32 0.3206n ± 0%
GlobalUint64-32 3.542n ± 1% 3.538n ± 1% ~ (p=0.304 n=20)
GlobalUint64Parallel-32 0.3218n ± 0% 0.3231n ± 0% ~ (p=0.071 n=20)
Int64-32 2.552n ± 2% 2.554n ± 2% ~ (p=0.693 n=20)
Uint64-32 2.566n ± 1% 2.575n ± 2% ~ (p=0.606 n=20)
GlobalIntN1000-32 5.965n ± 2% 6.292n ± 1% +5.46% (p=0.000 n=20)
IntN1000-32 4.652n ± 1% 4.735n ± 1% +1.77% (p=0.000 n=20)
Int64N1000-32 14.485n ± 1% 5.489n ± 2% -62.11% (p=0.000 n=20)
Int64N1e8-32 14.675n ± 1% 5.528n ± 2% -62.33% (p=0.000 n=20)
Int64N1e9-32 16.805n ± 2% 5.438n ± 2% -67.64% (p=0.000 n=20)
Int64N2e9-32 14.515n ± 1% 5.474n ± 1% -62.28% (p=0.000 n=20)
Int64N1e18-32 16.165n ± 1% 9.053n ± 1% -44.00% (p=0.000 n=20)
Int64N2e18-32 17.945n ± 2% 9.685n ± 2% -46.03% (p=0.000 n=20)
Int64N4e18-32 18.35n ± 2% 12.18n ± 1% -33.62% (p=0.000 n=20)
Int32N1000-32 3.608n ± 1% 4.862n ± 1% +34.77% (p=0.000 n=20)
Int32N1e8-32 3.767n ± 1% 4.758n ± 2% +26.31% (p=0.000 n=20)
Int32N1e9-32 4.130n ± 2% 4.772n ± 1% +15.54% (p=0.000 n=20)
Int32N2e9-32 4.206n ± 1% 4.847n ± 0% +15.24% (p=0.000 n=20)
Float32-32 22.18n ± 4% 22.18n ± 4% ~ (p=0.195 n=20)
Float64-32 20.75n ± 4% 21.21n ± 3% ~ (p=0.394 n=20)
ExpFloat64-32 12.58n ± 3% 12.39n ± 2% ~ (p=0.032 n=20)
NormFloat64-32 7.920n ± 3% 7.422n ± 1% -6.29% (p=0.000 n=20)
Perm3-32 40.27n ± 1% 38.00n ± 2% -5.65% (p=0.000 n=20)
Perm30-32 213.2n ± 2% 212.7n ± 1% ~ (p=0.995 n=20)
Perm30ViaShuffle-32 164.2n ± 2% 187.5n ± 2% +14.22% (p=0.000 n=20)
ShuffleOverhead-32 134.7n ± 2% 159.7n ± 1% +18.52% (p=0.000 n=20)
Concurrent-32 3.301n ± 2% 3.470n ± 0% +5.10% (p=0.000 n=20)
For #61716 .
Change-Id: Id1481b04202883cd0b23e21bb58d1bca4e482bd3
Reviewed-on: https://go-review.googlesource.com/c/go/+/502500
Reviewed-by: Rob Pike <r@golang.org>
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2023-10-30 17:08:37 +00:00
Russ Cox
c7dddb02d3
math/rand/v2: change Source to use uint64
...
This should make Uint64-using functions faster and leave
other things alone. It is a mystery why so much got faster.
A good cautionary tale not to read too much into minor
jitter in the benchmarks.
goos: linux
goarch: amd64
pkg: math/rand/v2
cpu: AMD Ryzen 9 7950X 16-Core Processor
│ 220860f76f.amd64 │ 11ad9fdddc.amd64 │
│ sec/op │ sec/op vs base │
SourceUint64-32 1.555n ± 1% 1.335n ± 1% -14.15% (p=0.000 n=20)
GlobalInt64-32 2.071n ± 1% 2.046n ± 1% ~ (p=0.016 n=20)
GlobalInt63Parallel-32 0.1023n ± 1% 0.1037n ± 1% +1.37% (p=0.002 n=20)
GlobalUint64-32 5.193n ± 1% 2.075n ± 0% -60.06% (p=0.000 n=20)
GlobalUint64Parallel-32 0.2341n ± 0% 0.1013n ± 1% -56.74% (p=0.000 n=20)
Int64-32 2.056n ± 2% 1.726n ± 2% -16.10% (p=0.000 n=20)
Uint64-32 2.077n ± 2% 1.673n ± 1% -19.46% (p=0.000 n=20)
GlobalIntN1000-32 4.077n ± 2% 3.895n ± 2% -4.45% (p=0.000 n=20)
IntN1000-32 3.476n ± 2% 3.403n ± 1% -2.10% (p=0.000 n=20)
Int64N1000-32 3.059n ± 1% 3.053n ± 2% ~ (p=0.131 n=20)
Int64N1e8-32 2.942n ± 1% 2.718n ± 1% -7.60% (p=0.000 n=20)
Int64N1e9-32 2.932n ± 1% 2.712n ± 1% -7.50% (p=0.000 n=20)
Int64N2e9-32 2.925n ± 1% 2.690n ± 1% -8.03% (p=0.000 n=20)
Int64N1e18-32 3.116n ± 1% 3.084n ± 2% ~ (p=0.425 n=20)
Int64N2e18-32 4.067n ± 1% 4.026n ± 1% -1.02% (p=0.007 n=20)
Int64N4e18-32 4.054n ± 1% 4.049n ± 2% ~ (p=0.204 n=20)
Int32N1000-32 2.951n ± 1% 2.730n ± 0% -7.49% (p=0.000 n=20)
Int32N1e8-32 3.102n ± 1% 2.916n ± 2% -6.03% (p=0.000 n=20)
Int32N1e9-32 3.535n ± 1% 3.375n ± 1% -4.54% (p=0.000 n=20)
Int32N2e9-32 3.514n ± 1% 3.292n ± 1% -6.30% (p=0.000 n=20)
Float32-32 2.760n ± 1% 2.673n ± 1% -3.13% (p=0.000 n=20)
Float64-32 2.284n ± 1% 2.485n ± 1% +8.80% (p=0.000 n=20)
ExpFloat64-32 3.757n ± 1% 3.577n ± 2% -4.78% (p=0.000 n=20)
NormFloat64-32 3.837n ± 1% 3.797n ± 2% ~ (p=0.204 n=20)
Perm3-32 35.23n ± 2% 35.79n ± 2% ~ (p=0.298 n=20)
Perm30-32 208.8n ± 1% 205.1n ± 1% -1.82% (p=0.000 n=20)
Perm30ViaShuffle-32 111.7n ± 1% 111.2n ± 2% ~ (p=0.273 n=20)
ShuffleOverhead-32 101.1n ± 1% 100.5n ± 2% ~ (p=0.878 n=20)
Concurrent-32 2.108n ± 7% 2.188n ± 5% ~ (p=0.417 n=20)
goos: darwin
goarch: arm64
pkg: math/rand/v2
│ 220860f76f.arm64 │ 11ad9fdddc.arm64 │
│ sec/op │ sec/op vs base │
SourceUint64-8 2.316n ± 1% 2.272n ± 1% -1.86% (p=0.000 n=20)
GlobalInt64-8 2.183n ± 1% 2.155n ± 1% ~ (p=0.122 n=20)
GlobalInt63Parallel-8 0.4331n ± 0% 0.4352n ± 0% +0.48% (p=0.000 n=20)
GlobalUint64-8 4.377n ± 2% 2.173n ± 1% -50.35% (p=0.000 n=20)
GlobalUint64Parallel-8 0.9237n ± 0% 0.4340n ± 0% -53.02% (p=0.000 n=20)
Int64-8 2.538n ± 1% 2.544n ± 1% ~ (p=0.189 n=20)
Uint64-8 2.604n ± 1% 2.552n ± 1% -1.98% (p=0.000 n=20)
GlobalIntN1000-8 3.857n ± 2% 3.856n ± 0% ~ (p=0.051 n=20)
IntN1000-8 3.822n ± 2% 3.820n ± 0% -0.05% (p=0.001 n=20)
Int64N1000-8 3.318n ± 0% 3.219n ± 2% -2.98% (p=0.000 n=20)
Int64N1e8-8 3.349n ± 1% 3.221n ± 2% -3.79% (p=0.000 n=20)
Int64N1e9-8 3.317n ± 2% 3.276n ± 2% -1.24% (p=0.001 n=20)
Int64N2e9-8 3.317n ± 2% 3.217n ± 0% -3.01% (p=0.000 n=20)
Int64N1e18-8 3.542n ± 1% 3.502n ± 2% -1.16% (p=0.001 n=20)
Int64N2e18-8 5.087n ± 0% 4.968n ± 1% -2.33% (p=0.000 n=20)
Int64N4e18-8 5.084n ± 0% 4.963n ± 0% -2.39% (p=0.000 n=20)
Int32N1000-8 3.208n ± 2% 3.189n ± 1% -0.58% (p=0.001 n=20)
Int32N1e8-8 3.610n ± 1% 3.514n ± 1% -2.67% (p=0.000 n=20)
Int32N1e9-8 4.235n ± 0% 4.133n ± 0% -2.40% (p=0.000 n=20)
Int32N2e9-8 4.229n ± 1% 4.137n ± 0% -2.19% (p=0.000 n=20)
Float32-8 3.468n ± 0% 3.468n ± 1% ~ (p=0.350 n=20)
Float64-8 3.447n ± 0% 3.478n ± 0% +0.90% (p=0.000 n=20)
ExpFloat64-8 4.567n ± 0% 4.563n ± 0% -0.10% (p=0.002 n=20)
NormFloat64-8 4.821n ± 0% 4.768n ± 0% -1.09% (p=0.000 n=20)
Perm3-8 28.89n ± 0% 28.94n ± 0% +0.17% (p=0.000 n=20)
Perm30-8 175.7n ± 0% 175.9n ± 0% +0.14% (p=0.000 n=20)
Perm30ViaShuffle-8 153.5n ± 0% 152.6n ± 1% ~ (p=0.010 n=20)
ShuffleOverhead-8 119.8n ± 1% 119.6n ± 1% ~ (p=0.147 n=20)
Concurrent-8 2.433n ± 3% 2.452n ± 3% ~ (p=0.616 n=20)
goos: linux
goarch: 386
pkg: math/rand/v2
cpu: AMD Ryzen 9 7950X 16-Core Processor
│ 220860f76f.386 │ 11ad9fdddc.386 │
│ sec/op │ sec/op vs base │
SourceUint64-32 2.370n ± 1% 2.091n ± 1% -11.75% (p=0.000 n=20)
GlobalInt64-32 3.569n ± 1% 3.514n ± 2% -1.56% (p=0.000 n=20)
GlobalInt63Parallel-32 0.3221n ± 1% 0.3197n ± 0% -0.76% (p=0.000 n=20)
GlobalUint64-32 8.797n ± 10% 3.542n ± 1% -59.74% (p=0.000 n=20)
GlobalUint64Parallel-32 0.6351n ± 0% 0.3218n ± 0% -49.33% (p=0.000 n=20)
Int64-32 2.612n ± 2% 2.552n ± 2% -2.30% (p=0.000 n=20)
Uint64-32 3.350n ± 1% 2.566n ± 1% -23.42% (p=0.000 n=20)
GlobalIntN1000-32 5.892n ± 1% 5.965n ± 2% ~ (p=0.082 n=20)
IntN1000-32 4.546n ± 1% 4.652n ± 1% +2.33% (p=0.000 n=20)
Int64N1000-32 14.59n ± 1% 14.48n ± 1% ~ (p=0.652 n=20)
Int64N1e8-32 14.76n ± 2% 14.67n ± 1% ~ (p=0.836 n=20)
Int64N1e9-32 16.57n ± 1% 16.80n ± 2% ~ (p=0.016 n=20)
Int64N2e9-32 14.54n ± 1% 14.52n ± 1% ~ (p=0.533 n=20)
Int64N1e18-32 16.14n ± 1% 16.16n ± 1% ~ (p=0.606 n=20)
Int64N2e18-32 18.10n ± 1% 17.95n ± 2% ~ (p=0.062 n=20)
Int64N4e18-32 18.65n ± 1% 18.35n ± 2% -1.61% (p=0.010 n=20)
Int32N1000-32 3.560n ± 1% 3.608n ± 1% +1.33% (p=0.001 n=20)
Int32N1e8-32 3.770n ± 2% 3.767n ± 1% ~ (p=0.155 n=20)
Int32N1e9-32 4.098n ± 0% 4.130n ± 2% ~ (p=0.016 n=20)
Int32N2e9-32 4.179n ± 1% 4.206n ± 1% ~ (p=0.011 n=20)
Float32-32 21.18n ± 4% 22.18n ± 4% +4.70% (p=0.003 n=20)
Float64-32 20.60n ± 2% 20.75n ± 4% +0.73% (p=0.000 n=20)
ExpFloat64-32 13.07n ± 0% 12.58n ± 3% -3.82% (p=0.000 n=20)
NormFloat64-32 7.738n ± 2% 7.920n ± 3% ~ (p=0.066 n=20)
Perm3-32 36.73n ± 1% 40.27n ± 1% +9.65% (p=0.000 n=20)
Perm30-32 211.9n ± 1% 213.2n ± 2% ~ (p=0.262 n=20)
Perm30ViaShuffle-32 165.2n ± 1% 164.2n ± 2% ~ (p=0.029 n=20)
ShuffleOverhead-32 133.9n ± 1% 134.7n ± 2% ~ (p=0.551 n=20)
Concurrent-32 3.287n ± 2% 3.301n ± 2% ~ (p=0.330 n=20)
For #61716 .
Change-Id: I8d2f73f87dd3603a0c2ff069988938e0957b6904
Reviewed-on: https://go-review.googlesource.com/c/go/+/502499
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Rob Pike <r@golang.org>
2023-10-30 17:08:34 +00:00
Russ Cox
1cc5b34d28
math/rand/v2: remove Rand.Seed
...
Removing Rand.Seed lets us remove lockedSource as well,
along with the ambiguity in globalRand about which source
to use.
For #61716 .
Change-Id: Ibe150520dd1e7dd87165eacaebe9f0c2daeaedfd
Reviewed-on: https://go-review.googlesource.com/c/go/+/502498
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Rob Pike <r@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Russ Cox <rsc@golang.org>
2023-10-30 14:31:46 +00:00
