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undo CL 140110043 / 17b5fc2aa130

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I have found better approach, then longer wait.
See CL 134360043 for details.

««« original CL description
runtime/pprof: adjust cpuHogger so that tests pass on windows builders

LGTM=rsc
R=dvyukov, rsc
CC=golang-codereviews
https://golang.org/cl/140110043

»»»

LGTM=dave
R=golang-codereviews, dave, dvyukov
CC=golang-codereviews
https://golang.org/cl/133500043
This commit is contained in:
Alex Brainman 2014-09-09 16:05:00 +10:00 committed by Russ Cox
parent bffb0590c1
commit d72029e3a3
1 changed files with 4 additions and 4 deletions
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8
src/runtime/pprof/pprof_test.go
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@ -23,12 +23,12 @@ import (
func cpuHogger(f func()) { func cpuHogger(f func()) {
// We only need to get one 100 Hz clock tick, so we've got // We only need to get one 100 Hz clock tick, so we've got
// a 100x safety buffer. // a 25x safety buffer.
// But do at least 2000 iterations (which should take about 400ms), // But do at least 500 iterations (which should take about 100ms),
// otherwise TestCPUProfileMultithreaded can fail if only one // otherwise TestCPUProfileMultithreaded can fail if only one
// thread is scheduled during the 1 second period. // thread is scheduled during the 250ms period.
t0 := time.Now() t0 := time.Now()
for i := 0; i < 2000 || time.Since(t0) < time.Second; i++ { for i := 0; i < 500 || time.Since(t0) < 250*time.Millisecond; i++ {
f() f()
} }
} }