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Issue 797075 link

Starred by 1 user
Status: Duplicate
Owner:
clemensh@chromium.org
Closed: Feb 2018
Cc:
█ briander...@chromium.org
ahaas@chromium.org
clemensh@chromium.org
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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3%-4.4% regression in jetstream at 525018:525253

Project Member Reported by briander...@chromium.org, Dec 21 2017 
See the link to graphs below.
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Dec 21 2017 

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=797075

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=07da7d83cc812473506b81b93a0d72ac5d8d156007e28aaa22143a4ec515e5da


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

chromium-rel-mac-retina
chromium-rel-mac11
chromium-rel-win10
chromium-rel-win7-gpu-intel
linux-release

Comment 7 by sullivan@chromium.org, Jan 23 2018 

Kicked off a few more bisects, since this one didn't finish, but did repro a real regression.
Project Member

Comment 8 by 42576172...@developer.gserviceaccount.com, Jan 23 2018 

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/149c0014840000
Project Member

Comment 9 by 42576172...@developer.gserviceaccount.com, Jan 23 2018 

😿 Pinpoint job stopped with an error.
https://pinpoint-dot-chromeperf.appspot.com/job/14ddd194840000
Project Member

Comment 10 by 42576172...@developer.gserviceaccount.com, Jan 23 2018 

😿 Pinpoint job stopped with an error.
https://pinpoint-dot-chromeperf.appspot.com/job/14934d0c840000
Project Member

Comment 11 by 42576172...@developer.gserviceaccount.com, Jan 23 2018 

😿 Pinpoint job stopped with an error.
https://pinpoint-dot-chromeperf.appspot.com/job/14d23ab4840000

Comment 12 by sullivan@google.com, Feb 23 2018 

Re-running after the fix for the errors.
Project Member

Comment 16 by 42576172...@developer.gserviceaccount.com, Feb 24 2018

Cc: clemensh@chromium.org ahaas@chromium.org
Owner: clemensh@chromium.org
Status: Assigned (was: Untriaged)
📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/16c37cff840000

[asm.js] Add masking to memory accesses by clemensh@chromium.org
https://chromium.googlesource.com/v8/v8/+/cbd308945f8f008f169864769d9d1887173456ee

Understanding performance regressions:
  http://g.co/ChromePerformanceRegressions
Project Member

Comment 17 by 42576172...@developer.gserviceaccount.com, Feb 24 2018 

📍 Found significant differences after each of 2 commits.
https://pinpoint-dot-chromeperf.appspot.com/job/14ac28c0440000

[asm.js] Implement loads in terms of regular branches by clemensh@chromium.org
https://chromium.googlesource.com/v8/v8/+/44aa135a6ed54c6118fbacf1a6f2a6cf66bf602c

[asm.js] Add masking to memory accesses by clemensh@chromium.org
https://chromium.googlesource.com/v8/v8/+/cbd308945f8f008f169864769d9d1887173456ee

Understanding performance regressions:
  http://g.co/ChromePerformanceRegressions

Comment 18 by clemensh@chromium.org, Feb 24 2018

Mergedinto: 799400
Status: Duplicate (was: Assigned)
Project Member

Comment 19 by 42576172...@developer.gserviceaccount.com, Feb 24 2018

Status: Assigned (was: Duplicate)
📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/12902b00440000

[asm.js] Add masking to memory accesses by clemensh@chromium.org
https://chromium.googlesource.com/v8/v8/+/cbd308945f8f008f169864769d9d1887173456ee

Understanding performance regressions:
  http://g.co/ChromePerformanceRegressions

Comment 20 by clemensh@chromium.org, Feb 24 2018

Status: Duplicate (was: Assigned)
►

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