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Issue metadata

Status: Duplicate
Merged: issue 699130
Owner: ----
Closed: Mar 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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5.3% regression in system_health.memory_mobile at 454664:454710

Project Member Reported by kraynov@chromium.org, Mar 7 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=699127

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDglLmisgsM


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

android-nexus5
Mergedinto: 699130
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Herb Derby
  Commit : 01254bcf222a7806afbfbcb9c7fe13cc522448b3
  Date   : Fri Mar 03 21:11:08 2017
  Subject: Use an exponential growth strategy for extra blocks.

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:chrome:all_processes:reported_by_chrome:malloc:effective_size_avg/browse_news/browse_news_qq
  Change       : 5.90% | 21945997.3333 -> 23240320.0

Revision                             Result                  N
chromium@454663                      21945997 +- 231123      6      good
chromium@454687                      21998467 +- 426403      6      good
chromium@454693                      21936056 +- 511721      6      good
chromium@454693,skia@767c7e7a0b      21968503 +- 284949      6      good
chromium@454693,skia@e459afd6ce      21841063 +- 395874      6      good
chromium@454693,skia@374a0178cf      22033941 +- 304680      6      good
chromium@454693,skia@baf06bc89a      22009827 +- 277678      6      good
chromium@454693,skia@01254bcf22      23205772 +- 116605      6      bad       <--
chromium@454694                      23187153 +- 250267      6      bad
chromium@454695                      23170428 +- 300685      6      bad
chromium@454696                      23236997 +- 230007      6      bad
chromium@454699                      23223461 +- 253176      6      bad
chromium@454710                      23240320 +- 254295      6      bad

Please refer to the following doc on diagnosing memory regressions:
  https://chromium.googlesource.com/chromium/src/+/master/docs/memory-infra/memory_benchmarks.md

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 --story-filter=browse.news.qq system_health.memory_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8985765320494388864

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5273464237195264


| 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!

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