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Issue 643860 link

Starred by 2 users

Issue metadata

Status: Duplicate
Merged: issue 643859
Owner:
Last visit > 30 days ago
Closed: Sep 2016
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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10.5% regression in media.android.tough_video_cases at 414470:414511

Project Member Reported by w...@chromium.org, Sep 2 2016

Issue description

ChromiumPerf/android-nexus5X/media.android.tough_video_cases / vm_proportional_set_size_delta / crowd.ogg_gpu
 

Comment 1 by w...@chromium.org, Sep 2 2016

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=643860

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg_sebugkM


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

android-nexus5X
Mergedinto: 643859
Status: Duplicate (was: Assigned)

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


===== SUSPECTED CL(s) =====
Subject : Re-enable program memory cache for Adreno 4/5xx
Author  : ericrk
Commit description:
  
The program cache was disabled on Adreno 4/5xx due to crashes.

I'm hoping that this issue was caused by invalidations/issues with the
on-disk program cache, possibly with driver updates or other issues.

To test this, I'm re-enabling the in-memory portion of the cache
only. The cached objects will not outlive the GPU process.

I've also confirmed that the related Adreno 3xx bug, crbug.com/510673,
does not impact the Adreno 400 (and I'm guessing 500, but will track
down a device to double check).

We should watch crash rates for gfx::GLApiBase::glProgramBinaryFn to
make sure this change doesn't re-introduce these crashes.

BUG= 598060 , 486117
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel

Review-Url: https://codereview.chromium.org/2267163003
Cr-Commit-Position: refs/heads/master@{#414490}
Commit  : 30bcb92ee59a6778c4025081d7da82d2af8cccc2
Date    : Thu Aug 25 18:49:45 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N   Good?
chromium@414469  299.0    15.8286  12  good
chromium@414480  299.111  13.6056  9   good
chromium@414485  304.5    10.8891  8   good
chromium@414488  305.0    4.65986  8   good
chromium@414489  300.0    8.24621  5   good
chromium@414490  323.333  11.827   12  bad    <--
chromium@414511  326.875  10.2739  8   bad

Bisect job ran on: android_nexus5X_perf_bisect
Bug ID: 643860

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --also-run-disabled-tests media.android.tough_video_cases
Test Metric: vm_proportional_set_size_delta/crowd.ogg_gpu
Relative Change: 5.73%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus5X_perf_bisect/builds/640
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9002588182623046832


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6442470575964160

| 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!

Comment 4 by myl20...@gmail.com, Sep 3 2016

myl20656@gmail.com

2016 စက် 4 2:04 AM တွင် "42576172… via monorail" <
monorail+v2.4141587437@chromium.org> ရေးခဲ့သည်မှာ။ ။

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