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runtime/pprof: skip TestStackBarrierProfiling on FreeBSD, too

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Sigh. Sleeps on FreeBSD also yield the rest of the time slice and
profiling signals are only delivered when a process completes a time
slice (worse, itimer time is only accounted to the process that
completes a time slice). It's less noticeable than the other BSDs
because the default tick rate is 1000Hz, but it's still failing
regularly.

Fixes #13846.

Change-Id: I41bf116bffe46682433b677183f86944d0944ed4
Reviewed-on: https://go-review.googlesource.com/18455
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Austin Clements <austin@google.com>
This commit is contained in:
Austin Clements 2016-01-08 14:32:52 -05:00
parent 68fe6d4037
commit 903c307c2b
1 changed files with 2 additions and 2 deletions
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4
src/runtime/pprof/pprof_test.go
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@ -333,11 +333,11 @@ func TestMathBigDivide(t *testing.T) {
}
func TestStackBarrierProfiling(t *testing.T) {
if (runtime.GOOS == "linux" && runtime.GOARCH == "arm") || runtime.GOOS == "openbsd" || runtime.GOOS == "solaris" || runtime.GOOS == "dragonfly" {
if (runtime.GOOS == "linux" && runtime.GOARCH == "arm") || runtime.GOOS == "openbsd" || runtime.GOOS == "solaris" || runtime.GOOS == "dragonfly" || runtime.GOOS == "freebsd" {
// This test currently triggers a large number of
// usleep(100)s. These kernels/arches have poor
// resolution timers, so this gives up a whole
// scheduling quantum. On Linux and OpenBSD (and
// scheduling quantum. On Linux and the BSDs (and
// probably Solaris), profiling signals are only
// generated when a process completes a whole
// scheduling quantum, so this test often gets zero