New issue
Advanced search Search tips

Issue 731661 link

Starred by 1 user

Issue metadata

Status: Duplicate
Merged: issue 731657
Owner: ----
Closed: Jun 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



Sign in to add a comment

10.9%-22% regression in blink_perf.css at 477294:477488

Project Member Reported by primiano@chromium.org, Jun 9 2017

Issue description

See the link to graphs below.
 
Mergedinto: 731657
Status: Duplicate (was: Untriaged)

=== BISECT JOB RESULTS ===
Perf regression found with culprit

Suspected Commit
  Author : Fernando Serboncini
  Commit : 2e48d743c9c647a66409c98ba96cbe80fd70774b
  Date   : Tue Jun 06 19:49:57 2017
  Subject: Remove CSSTextCache from CSSPrimitiveValue

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : blink_perf.css
  Metric       : CSSPropertySetterGetter/CSSPropertySetterGetter
  Change       : 9.39% | 340.301644855 -> 308.353612797

Revision             Result                  N
chromium@477343      340.302 +- 5.65538      6      good
chromium@477373      335.725 +- 10.5182      5      good
chromium@477377      332.99 +- 6.26051       6      good
chromium@477379      330.103 +- 3.75815      6      good
chromium@477380      315.704 +- 10.2923      6      bad       <--
chromium@477381      316.605 +- 6.69331      6      bad
chromium@477388      314.165 +- 6.364        6      bad
chromium@477402      316.066 +- 5.54168      6      bad
chromium@477461      308.354 +- 6.52655      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests blink_perf.css

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8977267923677754256

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5500736361725952


| 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 Speed>Bisection.  Thank you!

Sign in to add a comment