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Issue 625958 link

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Issue metadata

Status: WontFix
Owner:
Closed: Jul 2016
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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4.4% regression in speedometer at 403831:403836

Project Member Reported by nikolaos@chromium.org, Jul 6 2016

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=625958

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg0rnzuQoM


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

chromium-rel-mac-hdd
Cc: h...@chromium.org
Owner: h...@chromium.org

=== Auto-CCing suspected CL author hans@chromium.org ===

Hi hans@chromium.org, the bisect results pointed to your CL below as possibly
causing a regression. Please have a look at this info and see whether
your CL be related.


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


===== SUSPECTED CL(s) =====
Subject : Roll clang 274142:274369.
Author  : hans
Commit description:
  
Ran `tools/clang/scripts/upload_revision.py 274369`.

Picks up a fix for PR28388: Crash on invalid if.
Also pick up a fix for PR28360: clang-cl crash on an overload resolution + template deduction

BUG=

Review-Url: https://codereview.chromium.org/2114973003
Cr-Commit-Position: refs/heads/master@{#403836}
Commit  : 54c8d0a5e228aa1f3727b7268879fb543c3feca3
Date    : Wed Jul 06 01:45:15 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N   Good?
chromium@403830  1400.79  26.3717  18  good
chromium@403833  1397.75  23.7485  41  good
chromium@403835  1403.4   28.6061  41  good
chromium@403836  1423.59  26.1927  27  bad    <--

Bisect job ran on: mac_hdd_perf_bisect
Bug ID: 625958

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests speedometer
Test Metric: jQuery-TodoMVC/jQuery-TodoMVC
Relative Change: 2.96%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_hdd_perf_bisect/builds/623
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9007894871873870080


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5836402776866816

| 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!
Status: WontFix (was: Assigned)
This has recovered / was mainly in the noise.

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