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runtime/testdata/testprog: increase GCFairness2 timeout to 1s

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OpenBSD's scheduler causes preemption to take 20+ms, so 30ms is not
enough time for 3 goroutines to run. This change continues to sleep for
30ms, but if it finds that the 3 goroutines have not run, it sleeps for
an additional 1s before declaring failure.

Updates #17712

Change-Id: I3e886e40d05192b7cb71b4f242af195836ef62a8
Reviewed-on: https://go-review.googlesource.com/32634
Reviewed-by: Rick Hudson <rlh@golang.org>
Run-TryBot: Quentin Smith <quentin@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Quentin Smith 2016-11-02 16:18:22 -04:00 committed by Brad Fitzpatrick
parent e83911d6fc
commit 21c114e930
1 changed files with 16 additions and 2 deletions
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18
src/runtime/testdata/testprog/gc.go vendored
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@ -98,11 +98,25 @@ func GCFairness2() {
// If the scheduling rules change, this may not be enough time
// to let all goroutines run, but for now we cycle through
// them rapidly.
//
// OpenBSD's scheduler makes every usleep() take at least
// 20ms, so we need a long time to ensure all goroutines have
// run. If they haven't run after 30ms, give it another 1000ms
// and check again.
time.Sleep(30 * time.Millisecond)
var fail bool
for i := range count {
if atomic.LoadInt64(&count[i]) == 0 {
fmt.Printf("goroutine %d did not run\n", i)
return
fail = true
}
}
if fail {
time.Sleep(1 * time.Second)
for i := range count {
if atomic.LoadInt64(&count[i]) == 0 {
fmt.Printf("goroutine %d did not run\n", i)
return
}
}
}
fmt.Println("OK")