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runtime/metrics: change unit on *-by-size metrics to match bucket unit

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This change modifies the *-by-size metrics' units to be based off the
bucket's unit (bytes) as opposed to the unit of the counts (objects).
This convention is more in-line with distributions in other metrics
systems.

Change-Id: Id3b68a09f52f0e1ff9f4346f613ae1cbd9f52f73
Reviewed-on: https://go-review.googlesource.com/c/go/+/282352
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Trust: Michael Knyszek <mknyszek@google.com>
This commit is contained in:
Michael Anthony Knyszek 2021-01-07 17:24:39 +00:00 • committed by Michael Knyszek
parent c6513bca5a
commit 32afcc9436
4 changed files with 15 additions and 10 deletions
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8
src/runtime/metrics_test.go
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@ -70,7 +70,7 @@ func TestReadMetrics(t *testing.T) {
checkUint64(t, name, samples[i].Value.Uint64(), mstats.BuckHashSys)
case "/memory/classes/total:bytes":
checkUint64(t, name, samples[i].Value.Uint64(), mstats.Sys)
case "/gc/heap/allocs-by-size:objects":
case "/gc/heap/allocs-by-size:bytes":
hist := samples[i].Value.Float64Histogram()
// Skip size class 0 in BySize, because it's always empty and not represented
// in the histogram.
@ -84,7 +84,7 @@ func TestReadMetrics(t *testing.T) {
t.Errorf("histogram counts do not much BySize for class %d: got %d, want %d", i, c, m)
}
}
case "/gc/heap/frees-by-size:objects":
case "/gc/heap/frees-by-size:bytes":
hist := samples[i].Value.Float64Histogram()
// Skip size class 0 in BySize, because it's always empty and not represented
// in the histogram.
@ -161,9 +161,9 @@ func TestReadMetricsConsistency(t *testing.T) {
totalVirtual.got = samples[i].Value.Uint64()
case "/gc/heap/objects:objects":
objects.total = samples[i].Value.Uint64()
case "/gc/heap/allocs-by-size:objects":
case "/gc/heap/allocs-by-size:bytes":
objects.alloc = samples[i].Value.Float64Histogram()
case "/gc/heap/frees-by-size:objects":
case "/gc/heap/frees-by-size:bytes":
objects.free = samples[i].Value.Float64Histogram()
case "/gc/cycles:gc-cycles":
gc.numGC = samples[i].Value.Uint64()