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runtime/pprof: TestTimeVDSO is flaky on android builders #48655

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cherrymui opened this issue Sep 27, 2021 · 3 comments
Open

runtime/pprof: TestTimeVDSO is flaky on android builders #48655

cherrymui opened this issue Sep 27, 2021 · 3 comments
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NeedsInvestigation OS-Android

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@cherrymui
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@cherrymui cherrymui commented Sep 27, 2021

CL https://go-review.googlesource.com/c/go/+/337590 added a test TestTimeVDSO. But it is flaky on Android builders. I'll look into it.

@cherrymui cherrymui self-assigned this Sep 27, 2021
@bcmills bcmills added NeedsInvestigation OS-Android labels Sep 27, 2021
@dmitshur
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@dmitshur dmitshur commented Nov 4, 2021

This flaky TestTimeVDSO failure happened at least once also on linux/amd64:

--- FAIL: TestTimeVDSO (5.00s)
    pprof_test.go:514: total 0 CPU profile samples collected:
    pprof_test.go:530: too few samples; got 0, want at least 125, ideally 500
    pprof_test.go:549: time.now: 0
    pprof_test.go:552: no samples in expected functions
    pprof_test.go:562: time.now has 0 samples out of 0, want at least 1, ideally 0

(Build log.)

From a slowbot run on CL 361294. It didn't happen on the first retry.

@bcmills bcmills closed this as completed Jun 14, 2022
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@bcmills bcmills commented Jun 14, 2022

Oop, no. a skip was added in CL 352509 but we forgot to refer to this issue in the commit message.

@bcmills bcmills reopened this Jun 14, 2022
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