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runtime: TestSetGCPercent flaky #20076

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josharian opened this issue Apr 21, 2017 · 2 comments

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@josharian @ALTree @gopherbot @bradfitz @rsc @aclements @ianlancetaylor
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commented Apr 21, 2017

Despite CL 41374, I'm seeing a bunch of trybot failures like https://storage.googleapis.com/go-build-log/6c83b9bd/linux-amd64_cce08b9e.log:

--- FAIL: TestSetGCPercent (0.17s)
	garbage_test.go:151: NextGC = 172 MB, want 150±20 MB

cc @aclements

@josharian josharian added this to the Go1.9 milestone Apr 21, 2017

@josharian josharian added the Testing label Apr 21, 2017

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commented Apr 23, 2017

This is failing a lot. Just for reference: I see CL 41374 bumped from ±10 to ±20. Bumping again to ±30 won't help because I've seen failures with 181 (+31).

gopherbot pushed a commit that referenced this issue Apr 24, 2017

@bradfitz
runtime/debug: mark TestSetGCPercent as flaky 
Updates #20076

Change-Id: I4eb98abbb49174cc6433e5da2c3660893ef88fd1
Reviewed-on: https://go-review.googlesource.com/41615
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
6a48019
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commented Apr 25, 2017

CL https://golang.org/cl/41615 mentions this issue.

@aclements aclements self-assigned this Jun 7, 2017

@bradfitz bradfitz modified the milestones: Go1.10, Go1.9 Jun 15, 2017

@rsc rsc modified the milestones: Go1.10, Go1.11 Nov 22, 2017

@ianlancetaylor ianlancetaylor added the NeedsInvestigation label Nov 22, 2017

@ianlancetaylor ianlancetaylor modified the milestones: Go1.11, Go1.10 Nov 22, 2017

@ianlancetaylor ianlancetaylor modified the milestones: Go1.10, Go1.11 Jan 3, 2018

@ianlancetaylor ianlancetaylor added the help wanted label Jul 8, 2018

@ianlancetaylor ianlancetaylor modified the milestones: Go1.11, Unplanned Jul 8, 2018

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