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Author SHA1 Message Date
Russ Cox
c007ce824d build: move package sources from src/pkg to src 
Preparation was in CL 134570043.
This CL contains only the effect of 'hg mv src/pkg/* src'.
For more about the move, see golang.org/s/go14nopkg.
 2014-09-08 00:08:51 -04:00
Rui Ueyama
7bcbb65d78 bytes, strings: optimize Repeat 
Call copy with as large buffer as possible to reduce the
number of function calls.

benchmark                 old ns/op    new ns/op    delta
BenchmarkBytesRepeat            540          162  -70.00%
BenchmarkStringsRepeat          563          177  -68.56%

LGTM=josharian
R=golang-codereviews, josharian, dave, dvyukov
CC=golang-codereviews
https://golang.org/cl/90550043
 2014-06-11 19:03:59 -07:00
Rui Ueyama
cdabca325e bytes: fix typos 
LGTM=mikioh.mikioh
R=golang-codereviews, mikioh.mikioh
CC=golang-codereviews
https://golang.org/cl/94240045
 2014-05-10 07:13:42 +09:00
Rui Ueyama
1a21dbc572 bytes: fix panic in Map 
utf8.RuneLen returns -1 for an invalid rune. In that case we
need to extend the internal buffer at least by 3 for \uFFFD.

Fixes #7577.

LGTM=iant
R=golang-codereviews, iant
CC=golang-codereviews
https://golang.org/cl/77420044
 2014-03-18 20:52:58 -07:00
Shawn Smith
872f5ffa09 bytes: add test for Contains 
R=golang-codereviews, dave
CC=golang-codereviews
https://golang.org/cl/46140043
 2013-12-28 20:33:05 +11:00
Shawn Smith
7054890715 bytes, strings: improve Title test coverage by adding cases with underscore and unicode line separator 
R=golang-codereviews, gobot, r
CC=golang-codereviews
https://golang.org/cl/42310045
 2013-12-20 23:19:32 -08:00
Dave Cheney
3ee0744c06 bytes: additional test coverage 
Add coverage for some uncovered bytes methods. The increase in actual coverage is disapointing small.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/13651044
 2013-09-11 21:20:15 +10:00
Keith Randall
b3946dc119 runtime/bytes: fast Compare for byte arrays and strings. 
Uses SSE instructions to process 16 bytes at a time.

fixes #5354

R=bradfitz, google
CC=golang-dev
https://golang.org/cl/8853048
 2013-05-14 16:05:51 -07:00
Keith Randall
3d5daa2319 runtime: Implement faster equals for strings and bytes. 
(amd64)
benchmark           old ns/op    new ns/op    delta
BenchmarkEqual0            16            6  -63.15%
BenchmarkEqual9            22            7  -65.37%
BenchmarkEqual32           36            9  -74.91%
BenchmarkEqual4K         2187          120  -94.51%

benchmark            old MB/s     new MB/s  speedup
BenchmarkEqual9        392.22      1134.38    2.89x
BenchmarkEqual32       866.72      3457.39    3.99x
BenchmarkEqual4K      1872.73     33998.87   18.15x

(386)
benchmark           old ns/op    new ns/op    delta
BenchmarkEqual0            16            5  -63.85%
BenchmarkEqual9            22            7  -67.84%
BenchmarkEqual32           34           12  -64.94%
BenchmarkEqual4K         2196          113  -94.85%

benchmark            old MB/s     new MB/s  speedup
BenchmarkEqual9        405.81      1260.18    3.11x
BenchmarkEqual32       919.55      2631.21    2.86x
BenchmarkEqual4K      1864.85     36072.54   19.34x

Update #3751

R=bradfitz, r, khr, dave, remyoudompheng, fullung, minux.ma, ality
CC=golang-dev
https://golang.org/cl/8056043
 2013-04-02 16:26:15 -07:00
Brad Fitzpatrick
30a9957aac bytes: minor optimization to lastIndexFunc 
Before and after:
BenchmarkTrimSpace  20000000   81.3 ns/op
BenchmarkTrimSpace  50000000   58.0 ns/op

(most whitespace trimming is ASCII whitespace)

Same optimization appeared a handful of other places
in this file, but not here.

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/7305063
 2013-02-07 16:00:06 -08:00
Brad Fitzpatrick
e515d80d5d bytes, strings: add TrimPrefix and TrimSuffix 
Everybody either gets confused and thinks this is
TrimLeft/TrimRight or does this by hand which gets
repetitive looking.

R=rsc, kevlar
CC=golang-dev
https://golang.org/cl/7239044
 2013-02-01 08:41:25 -08:00
Nigel Tao
c753404886 bytes: fix docs: s/array/slice/. 
R=rsc, mdempsky, dave
CC=golang-dev
https://golang.org/cl/7028051
 2013-01-07 10:48:06 +11:00
Robert Griesemer
465b9c35e5 gofmt: apply gofmt -w src misc 
Remove trailing whitespace in comments.
No other changes.

R=r
CC=golang-dev
https://golang.org/cl/6815053
 2012-10-30 13:38:01 -07:00
Russ Cox
0e60019a42 bytes, strings: add Fields benchmarks 
The performance changes will be a few different CLs.
Start with benchmarks as a baseline.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6537043
 2012-09-18 15:02:08 -04:00
Gustavo Niemeyer
c0efcac6a9 bytes: make Join return a new buffer on len(a) == 1 
Fixes #3844.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6432054
 2012-07-20 16:04:22 -03:00
David Symonds
85f2d18a72 bytes: document Compare/Equal semantics for nil arguments, and add tests. 
R=golang-dev, bradfitz, r, r
CC=golang-dev
https://golang.org/cl/5676090
 2012-02-18 17:39:40 +11:00
Rob Pike
6b772462e4 panics: use the new facilities of testing.B instead 
Lots of panics go away.
Also fix a name error in html/template.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5498045
 2011-12-20 10:36:25 -08:00
Russ Cox
9b875bc037 bytes: faster Count, Index, Equal 
Benchmarks are from GOARCH=amd64 on a MacPro5,1.

benchmark                                    old MB/s     new MB/s  speedup
bytes_test.BenchmarkEqual32                    452.89       891.07    1.97x
bytes_test.BenchmarkEqual4K                    852.71      1700.44    1.99x
bytes_test.BenchmarkEqual4M                    841.53      1587.93    1.89x
bytes_test.BenchmarkEqual64M                   838.22      1578.14    1.88x

bytes_test.BenchmarkIndex32                     58.02        48.99    0.84x
bytes_test.BenchmarkIndex4K                     48.26        41.32    0.86x
bytes_test.BenchmarkIndex4M                     48.20        41.24    0.86x
bytes_test.BenchmarkIndex64M                    48.08        41.21    0.86x
bytes_test.BenchmarkIndexEasy32                410.04       546.82    1.33x
bytes_test.BenchmarkIndexEasy4K                849.26     14257.37   16.79x
bytes_test.BenchmarkIndexEasy4M                854.54     17222.15   20.15x
bytes_test.BenchmarkIndexEasy64M               843.57     11060.40   13.11x

bytes_test.BenchmarkCount32                     57.24        50.68    0.89x
bytes_test.BenchmarkCount4K                     48.19        41.82    0.87x
bytes_test.BenchmarkCount4M                     48.18        41.74    0.87x
bytes_test.BenchmarkCount64M                    48.17        41.71    0.87x
bytes_test.BenchmarkCountEasy32                433.11       547.44    1.26x
bytes_test.BenchmarkCountEasy4K               1130.59     14194.06   12.55x
bytes_test.BenchmarkCountEasy4M               1131.23     17231.18   15.23x
bytes_test.BenchmarkCountEasy64M              1111.40     11068.88    9.96x

The non-easy Count/Index benchmarks are a worst case input.

regexp.BenchmarkMatchEasy0_32                  237.46       221.47    0.93x
regexp.BenchmarkMatchEasy0_1K                  553.53      1019.72    1.84x
regexp.BenchmarkMatchEasy0_32K                 693.99      1672.06    2.41x
regexp.BenchmarkMatchEasy0_1M                  688.72      1611.68    2.34x
regexp.BenchmarkMatchEasy0_32M                 680.70      1565.05    2.30x
regexp.BenchmarkMatchEasy1_32                  165.56       243.08    1.47x
regexp.BenchmarkMatchEasy1_1K                  336.45       496.32    1.48x
regexp.BenchmarkMatchEasy1_32K                 302.80       425.63    1.41x
regexp.BenchmarkMatchEasy1_1M                  300.42       414.20    1.38x
regexp.BenchmarkMatchEasy1_32M                 299.64       413.47    1.38x

R=golang-dev, r, iant
CC=golang-dev
https://golang.org/cl/5451116
 2011-12-07 15:09:56 -05:00
Christopher Wedgwood
7600281bda bytes: fix test output 
R=rsc, gri
CC=golang-dev
https://golang.org/cl/5441048
 2011-11-28 09:50:51 -08:00
Russ Cox
558e7fc332 various: avoid func compare 
R=gri, r, bradfitz
CC=golang-dev
https://golang.org/cl/5371074
 2011-11-13 22:57:19 -05:00
Rob Pike
30aa701fec renaming_2: gofix -r go1pkgrename src/pkg/[a-l]* 
R=rsc
CC=golang-dev
https://golang.org/cl/5358041
 2011-11-08 15:40:58 -08:00
Russ Cox
8f5718176f bytes, strings: use rune 
Various rune-based APIs change.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5306044
 2011-10-25 22:22:09 -07:00
Christopher Wedgwood
707e5acd71 updates: append(y,[]byte(z)...) -> append(y,z...)" 
(more are possible but omitted for now as they are part of
specific tests where rather than changing what is there we
should probably expand the tests to cover the new case)

R=rsc, dvyukov
CC=golang-dev
https://golang.org/cl/5247058
 2011-10-12 13:42:04 -07:00
Russ Cox
c68ae9d467 bytes: add EqualFold 
R=golang-dev, r, r
CC=golang-dev
https://golang.org/cl/5123047
 2011-09-26 19:35:32 -04:00
Gustavo Niemeyer
d16ceca5c5 bytes: fix Replace so it actually copies 
The documentation for bytes.Replace says it copies
the slice but it won't necessarily copy them.  Since
the data is mutable, breaking the contract is an issue.

We either have to fix this by making the copy at all
times, as suggested in this CL, or we should change the
documentation and perhaps make better use of the fact
it's fine to mutate the slice in place otherwise.

R=golang-dev, bradfitz, adg, rsc
CC=golang-dev
https://golang.org/cl/5081043
 2011-09-21 12:36:17 -03:00
Robert Griesemer
90564a9256 go/printer: changed max. number of newlines from 3 to 2 
manual changes in src/pkg/go/printer, src/cmd/gofix/signal_test.go
(cd src/cmd/gofix/testdata; gofmt -w *.in *.out)
(cd src/pkg/go/printer; gotest -update)
gofmt -w misc src

runs all tests

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/4715041
 2011-07-14 14:39:40 -07:00
Rob Pike
ebb1566a46 strings.Split: make the default to split all. 
Change the signature of Split to have no count,
assuming a full split, and rename the existing
Split with a count to SplitN.
Do the same to package bytes.
Add a gofix module.

R=adg, dsymonds, alex.brainman, rsc
CC=golang-dev
https://golang.org/cl/4661051
 2011-06-28 09:43:14 +10:00
Rob Pike
f0cf7d296c testing: shorten some tests. 
These are the top runners.  More to come.
Also print two digits of timing info under -test.v.

R=rsc
CC=golang-dev
https://golang.org/cl/4317044
 2011-03-25 16:31:10 -07:00
Kyle Consalus
009aebdba8 Removed bytes.Add and bytes.AddByte; we now have 'append'. 
Changed all uses of bytes.Add (aside from those testing bytes.Add) to append(a, b...).
Also ran "gofmt -s" and made use of copy([]byte, string) in the fasta benchmark.

R=golang-dev, r, r2
CC=golang-dev
https://golang.org/cl/3302042
 2010-12-01 11:59:13 -08:00
Benny Siegert
8530e8ef65 strings: add LastIndexAny 
The need for a LastIndexAny function has come up in the discussion
for https://golang.org/cl/3008041/. This function is
implemented analogously to lastIndexFunc, using functions from
the utf8 package.

R=r, rsc, PeterGo
CC=golang-dev
https://golang.org/cl/3057041
 2010-11-12 12:47:50 -08:00
Evan Shaw
49fdfe21dd bytes: SSE for bytes.IndexByte on amd64 
Performance on 2.8 GHz Intel Core i7:

Before:
BenchmarkIndexByte4K  1000000              2997 ns/op        1366.70 MB/s
BenchmarkIndexByte4M      500           3049772 ns/op        1375.28 MB/s
BenchmarkIndexByte64M      50          49582280 ns/op        1353.48 MB/s

After:
BenchmarkIndexByte4K 10000000               298 ns/op       13744.97 MB/s
BenchmarkIndexByte4M    10000            285993 ns/op       14665.76 MB/s
BenchmarkIndexByte64M     500           4618172 ns/op       14531.48 MB/s

R=rsc, PeterGo, r2, r
CC=golang-dev
https://golang.org/cl/2888041
 2010-11-08 17:33:53 -08:00
Russ Cox
d86ab015f7 use copy 
R=gri
CC=golang-dev
https://golang.org/cl/2763041
 2010-10-26 21:52:54 -07:00
Robert Griesemer
3478891d12 gofmt -s -w src misc 
R=r, rsc
CC=golang-dev
https://golang.org/cl/2662041
 2010-10-22 10:06:33 -07:00
Christian Himpel
75f6a0c759 bytes: add IndexRune, FieldsFunc and To*Special 
Basically these functions are implemented the same way as the
corresponding functions in the strings package.  Test functions
are implemented for IndexRune and FieldsFunc.

Additionally two typos are fixed in packages bytes and strings.

R=r
CC=golang-dev
https://golang.org/cl/1696062
 2010-08-05 23:11:06 +10:00
Scott Lawrence
99aab8bacb bytes: added test case for explode with blank string. 
Tests for the equivalent of the strings.explode("") panic bug (issue 980).

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/1850052
 2010-08-04 13:33:24 +10:00
Fazlul Shahriar
e356f1d88f bytes: port IndexFunc and LastIndexFunc from strings package 
This CL basically applies the same changes as

	http://code.google.com/p/go/source/detail?r=5e0a29014e8e

but for bytes package.

R=r, rog
CC=golang-dev
https://golang.org/cl/1670052
 2010-07-23 12:34:35 -07:00
Rob Pike
de228c0e0c bytes: add Title 
R=rsc
CC=golang-dev
https://golang.org/cl/1872042
 2010-07-20 19:53:59 -07:00
Rob Pike
38f1231f3e strings and bytes.Split: make count of 0 mean 0, not infinite. 
Use a count of -1 for infinity.  Ditto for Replace.

R=rsc
CC=golang-dev
https://golang.org/cl/1704044
 2010-07-01 14:08:14 -07:00
Russ Cox
0bf413ab8e bytes, strings: add Replace 
This is the Replace I suggested in the review of CL 1114041.
It's true that we already have

	regexp.MustCompile(regexp.QuoteMeta(old)).ReplaceAll(s, new)

but because this Replace is doing a simpler job it is
simpler to call and inherently more efficient.

I will add the bytes implementation and tests to the
CL after the strings one has been reviewed.

R=r, cw
CC=golang-dev
https://golang.org/cl/1731048
 2010-06-30 18:03:09 -07:00
Michael Hoisie
4a3cb1ad2f bytes: add Trim, TrimLeft, TrimRight, and generic functions 
R=rsc, r
CC=golang-dev
https://golang.org/cl/946045
 2010-05-18 23:01:05 -07:00
Rob Pike
e1d20d0a51 bytes: Change IndexAny to look for UTF-8 encoded characters. 
Also improve the implementations of Equals and Compare.

R=rsc
CC=golang-dev
https://golang.org/cl/969047
 2010-05-03 10:59:00 -07:00
Russ Cox
00f9f0c056 single argument panic 
note that sortmain.go has been run through hg gofmt;
only the formatting of the day initializers changed.
i'm happy to revert that formatting if you'd prefer.

stop on error in doc/progs/run

R=r
CC=golang-dev
https://golang.org/cl/850041
 2010-03-30 10:34:57 -07:00
Robert Griesemer
d0ffee8abf bytes, strings: IndexOfAny 
+ first use in go/doc

R=r
CC=golang-dev
https://golang.org/cl/781041
 2010-03-26 13:05:04 -07:00
Russ Cox
9750adbbad strings: delete Runes, Bytes 
gofmt -w -r 'strings.Bytes(a) -> []byte(a)' src/cmd src/pkg test/bench
gofmt -w -r 'strings.Runes(a) -> []int(a)' src/cmd src/pkg test/bench
delete unused imports

R=r
CC=golang-dev
https://golang.org/cl/224062
 2010-02-25 16:01:29 -08:00
Robert Griesemer
cd72f77f23 apply gofmt to src and misc 
R=rsc
CC=golang-dev
https://golang.org/cl/213041
 2010-02-17 15:46:46 -08:00
Andrey Mirtchovski
7f501c06f7 bytes, strings: add new function Fields 
R=rsc, r, phf
CC=golang-dev
https://golang.org/cl/170046
 2009-12-15 21:09:55 -08:00
Robert Griesemer
5a1d3323fe 1) Change default gofmt default settings for 
parsing and printing to new syntax.

                  Use -oldparser to parse the old syntax,
                  use -oldprinter to print the old syntax.

               2) Change default gofmt formatting settings
                  to use tabs for indentation only and to use
                  spaces for alignment. This will make the code
                  alignment insensitive to an editor's tabwidth.

                  Use -spaces=false to use tabs for alignment.

               3) Manually changed src/exp/parser/parser_test.go
                  so that it doesn't try to parse the parser's
                  source files using the old syntax (they have
                  new syntax now).

               4) gofmt -w src misc test/bench

	       1st set of files.

R=rsc
CC=agl, golang-dev, iant, ken2, r
https://golang.org/cl/180047
 2009-12-15 15:33:31 -08:00
Kei Son
128974adfd bytes, strings: allow -1 in Map to mean "drop this character". 
xml: drop invalid characters in attribute names
    when constructing struct field names.

R=rsc
CC=r
https://golang.org/cl/157104
 2009-12-11 10:37:48 -08:00
Russ Cox
d6b3f37e1e bytes: asm for bytes.IndexByte 
PERFORMANCE DIFFERENCE

SUMMARY

                                                   amd64           386
2.2 GHz AMD Opteron 8214 HE (Linux)             3.0x faster    8.2x faster
3.60 GHz Intel Xeon (Linux)                     2.2x faster    6.2x faster
2.53 GHz Intel Core2 Duo E7200 (Linux)          1.5x faster    4.4x faster
2.66 Ghz Intel Xeon 5150 (Mac Pro, OS X)        1.5x SLOWER    3.0x faster
2.33 GHz Intel Xeon E5435 (Linux)               1.5x SLOWER    3.0x faster
2.33 GHz Intel Core2 T7600 (MacBook Pro, OS X)  1.4x SLOWER    3.0x faster
1.83 GHz Intel Core2 T5600 (Mac Mini, OS X)        none*       3.0x faster

* but yesterday I consistently saw 1.4x SLOWER.

DETAILS

2.2 GHz AMD Opteron 8214 HE (Linux)

amd64 (3x faster)

IndexByte4K            500000           3733 ns/op     1097.24 MB/s
IndexByte4M               500        4328042 ns/op      969.10 MB/s
IndexByte64M               50       67866160 ns/op      988.84 MB/s

IndexBytePortable4K    200000          11161 ns/op      366.99 MB/s
IndexBytePortable4M       100       11795880 ns/op      355.57 MB/s
IndexBytePortable64M       10      188675000 ns/op      355.68 MB/s

386 (8.2x faster)

IndexByte4K            500000           3734 ns/op     1096.95 MB/s
IndexByte4M               500        4209954 ns/op      996.28 MB/s
IndexByte64M               50       68031980 ns/op      986.43 MB/s

IndexBytePortable4K     50000          30670 ns/op      133.55 MB/s
IndexBytePortable4M        50       31868220 ns/op      131.61 MB/s
IndexBytePortable64M        2      508851500 ns/op      131.88 MB/s

3.60 GHz Intel Xeon (Linux)

amd64 (2.2x faster)

IndexByte4K            500000           4612 ns/op      888.12 MB/s
IndexByte4M               500        4835250 ns/op      867.44 MB/s
IndexByte64M               20       77388450 ns/op      867.17 MB/s

IndexBytePortable4K    200000          10306 ns/op      397.44 MB/s
IndexBytePortable4M       100       11201460 ns/op      374.44 MB/s
IndexBytePortable64M       10      179456800 ns/op      373.96 MB/s

386 (6.3x faster)

IndexByte4K            500000           4631 ns/op      884.47 MB/s
IndexByte4M               500        4846388 ns/op      865.45 MB/s
IndexByte64M               20       78691200 ns/op      852.81 MB/s

IndexBytePortable4K    100000          28989 ns/op      141.29 MB/s
IndexBytePortable4M        50       31183180 ns/op      134.51 MB/s
IndexBytePortable64M        5      498347200 ns/op      134.66 MB/s

2.53 GHz Intel Core2 Duo E7200  (Linux)

amd64 (1.5x faster)

IndexByte4K            500000           6502 ns/op      629.96 MB/s
IndexByte4M               500        6692208 ns/op      626.74 MB/s
IndexByte64M               10      107410400 ns/op      624.79 MB/s

IndexBytePortable4K    200000           9721 ns/op      421.36 MB/s
IndexBytePortable4M       100       10013680 ns/op      418.86 MB/s
IndexBytePortable64M       10      160460800 ns/op      418.23 MB/s

386 (4.4x faster)

IndexByte4K            500000           6505 ns/op      629.67 MB/s
IndexByte4M               500        6694078 ns/op      626.57 MB/s
IndexByte64M               10      107397600 ns/op      624.86 MB/s

IndexBytePortable4K    100000          28835 ns/op      142.05 MB/s
IndexBytePortable4M        50       29562680 ns/op      141.88 MB/s
IndexBytePortable64M        5      473221400 ns/op      141.81 MB/s

2.66 Ghz Intel Xeon 5150  (Mac Pro, OS X)

amd64 (1.5x SLOWER)

IndexByte4K            200000           9290 ns/op      440.90 MB/s
IndexByte4M               200        9568925 ns/op      438.33 MB/s
IndexByte64M               10      154473600 ns/op      434.44 MB/s

IndexBytePortable4K    500000           6202 ns/op      660.43 MB/s
IndexBytePortable4M       500        6583614 ns/op      637.08 MB/s
IndexBytePortable64M       20      107166250 ns/op      626.21 MB/s

386 (3x faster)

IndexByte4K            200000           9301 ns/op      440.38 MB/s
IndexByte4M               200        9568025 ns/op      438.37 MB/s
IndexByte64M               10      154391000 ns/op      434.67 MB/s

IndexBytePortable4K    100000          27526 ns/op      148.80 MB/s
IndexBytePortable4M       100       28302490 ns/op      148.20 MB/s
IndexBytePortable64M        5      454170200 ns/op      147.76 MB/s

2.33 GHz Intel Xeon E5435  (Linux)

amd64 (1.5x SLOWER)

IndexByte4K            200000          10601 ns/op      386.38 MB/s
IndexByte4M               100       10827240 ns/op      387.38 MB/s
IndexByte64M               10      173175500 ns/op      387.52 MB/s

IndexBytePortable4K    500000           7082 ns/op      578.37 MB/s
IndexBytePortable4M       500        7391792 ns/op      567.43 MB/s
IndexBytePortable64M       20      122618550 ns/op      547.30 MB/s

386 (3x faster)

IndexByte4K            200000          11074 ns/op      369.88 MB/s
IndexByte4M               100       10902620 ns/op      384.71 MB/s
IndexByte64M               10      181292800 ns/op      370.17 MB/s

IndexBytePortable4K     50000          31725 ns/op      129.11 MB/s
IndexBytePortable4M        50       32564880 ns/op      128.80 MB/s
IndexBytePortable64M        2      545926000 ns/op      122.93 MB/s

2.33 GHz Intel Core2 T7600 (MacBook Pro, OS X)

amd64 (1.4x SLOWER)

IndexByte4K            200000          11120 ns/op      368.35 MB/s
IndexByte4M               100       11531950 ns/op      363.71 MB/s
IndexByte64M               10      184819000 ns/op      363.11 MB/s

IndexBytePortable4K    500000           7419 ns/op      552.10 MB/s
IndexBytePortable4M       200        8018710 ns/op      523.06 MB/s
IndexBytePortable64M       10      127614900 ns/op      525.87 MB/s

386 (3x faster)

IndexByte4K            200000          11114 ns/op      368.54 MB/s
IndexByte4M               100       11443530 ns/op      366.52 MB/s
IndexByte64M               10      185212000 ns/op      362.34 MB/s

IndexBytePortable4K     50000          32891 ns/op      124.53 MB/s
IndexBytePortable4M        50       33930580 ns/op      123.61 MB/s
IndexBytePortable64M        2      545400500 ns/op      123.05 MB/s

1.83 GHz Intel Core2 T5600  (Mac Mini, OS X)

amd64 (no difference)

IndexByte4K            200000          13497 ns/op      303.47 MB/s
IndexByte4M               100       13890650 ns/op      301.95 MB/s
IndexByte64M                5      222358000 ns/op      301.81 MB/s

IndexBytePortable4K    200000          13584 ns/op      301.53 MB/s
IndexBytePortable4M       100       13913280 ns/op      301.46 MB/s
IndexBytePortable64M       10      222572600 ns/op      301.51 MB/s

386 (3x faster)

IndexByte4K            200000          13565 ns/op      301.95 MB/s
IndexByte4M               100       13882640 ns/op      302.13 MB/s
IndexByte64M                5      221411600 ns/op      303.10 MB/s

IndexBytePortable4K     50000          39978 ns/op      102.46 MB/s
IndexBytePortable4M        50       41038160 ns/op      102.20 MB/s
IndexBytePortable64M        2      656362500 ns/op      102.24 MB/s

R=r
CC=golang-dev
https://golang.org/cl/166055
 2009-12-04 10:23:43 -08:00
Peter Froehlich
1eba218e44 Runes: turn string into []int 
Split: fixed typo in documentation

R=rsc, r, r1
https://golang.org/cl/157170
 2009-12-02 20:47:38 -08:00