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Issue 636356 link

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Issue metadata

Status: WontFix
Owner:
Last visit > 30 days ago
Closed: Aug 2016
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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17% regression in v8.top_25_smooth at 410315:410319

Project Member Reported by pmeenan@chromium.org, Aug 10 2016

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=636356

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg1tCXuAkM


Bot(s) for this bug's original alert(s):

chromium-rel-mac11
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 10 2016


===== BISECT JOB RESULTS =====
Status: completed


=== Bisection aborted ===
The bisect was aborted because The metric values for the initial "good" and "bad" revisions do not represent a clear regression.
Please contact the the team (see below) if you believe this is in error.

=== Warnings ===
The following warnings were raised by the bisect job:

 * Bisect failed to reproduce the regression with enough confidence.

===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N   Good?
chromium@410314  41.4209  1.07883  18  good
chromium@410319  41.6808  1.16847  18  bad

Bisect job ran on: mac_10_11_perf_bisect
Bug ID: 636356

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests v8.top_25_smooth
Test Metric: v8_gc_total_outside_idle/v8_gc_total_outside_idle
Relative Change: 0.93%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_10_11_perf_bisect/builds/821
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9004710019885279680


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5812301106511872

| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with component Tests>AutoBisect.  Thank you!
Cc: hpayer@chromium.org
hpayer@ - it looks like you had a few gc-related commits that were in the v8 roll where the regression happened. https://chromium.googlesource.com/v8/v8/+log/b5764163..f08036f9

I kicked off another bisect but could you PTAL and see if this was expected?
Status: WontFix (was: Assigned)
Closing, recovered.

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