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runtime/pprof: adjust test

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NetBSD and OpenBSD are broken like OS X is. Good to know.

Drop required count from avg/2 to avg/3, because the
Plan 9 builder just barely missed avg/2 in one of its runs.

R=golang-dev, dvyukov
CC=golang-dev
https://golang.org/cl/12548043
This commit is contained in:
Russ Cox 2013-08-06 14:49:55 -04:00
parent 905f296552
commit 8dc7a31d77
2 changed files with 16 additions and 7 deletions
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3
src/pkg/runtime/pprof/pprof.go
View File

@ -20,7 +20,8 @@ import (
"text/tabwriter" "text/tabwriter"
) )
// BUG(rsc): Profiles are incomplete and inaccuate on OS X. See http://golang.org/issue/6047 for details. // BUG(rsc): Profiles are incomplete and inaccuate on NetBSD, OpenBSD, and OS X.
// See http://golang.org/issue/6047 for details.
// A Profile is a collection of stack traces showing the call sequences // A Profile is a collection of stack traces showing the call sequences
// that led to instances of a particular event, such as allocation. // that led to instances of a particular event, such as allocation.

20
src/pkg/runtime/pprof/pprof_test.go
View File

@ -78,11 +78,12 @@ func testCPUProfile(t *testing.T, need []string, f func()) {
val = val[:l] val = val[:l]
if l < 13 { if l < 13 {
if runtime.GOOS == "darwin" { t.Logf("profile too short: %#x", val)
t.Logf("ignoring failure on OS X; see golang.org/issue/6047") if badOS[runtime.GOOS] {
t.Skipf("ignoring failure on %s; see golang.org/issue/6047", runtime.GOOS)
return return
} }
t.Fatalf("profile too short: %#x", val) t.FailNow()
} }
hd, val, tl := val[:5], val[5:l-3], val[l-3:] hd, val, tl := val[:5], val[5:l-3], val[l-3:]
@ -124,7 +125,7 @@ func testCPUProfile(t *testing.T, need []string, f func()) {
t.Logf("no CPU profile samples collected") t.Logf("no CPU profile samples collected")
ok = false ok = false
} }
min := total / uintptr(len(have)) / 2 min := total / uintptr(len(have)) / 3
for i, name := range need { for i, name := range need {
if have[i] < min { if have[i] < min {
t.Logf("%s has %d samples out of %d, want at least %d, ideally %d", name, have[i], total, min, total/uintptr(len(have))) t.Logf("%s has %d samples out of %d, want at least %d, ideally %d", name, have[i], total, min, total/uintptr(len(have)))
@ -133,10 +134,17 @@ func testCPUProfile(t *testing.T, need []string, f func()) {
} }
if !ok { if !ok {
if runtime.GOOS == "darwin" { if badOS[runtime.GOOS] {
t.Logf("ignoring failure on OS X; see golang.org/issue/6047") t.Skipf("ignoring failure on %s; see golang.org/issue/6047", runtime.GOOS)
return return
} }
t.FailNow() t.FailNow()
} }
} }
// Operating systems that are expected to fail the tests. See issue 6047.
var badOS = map[string]bool{
"darwin": true,
"netbsd": true,
"openbsd": true,
}