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Issue 814168 link

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Issue metadata

Status: Duplicate
Merged: issue 814053
Owner:
Closed: Mar 2018
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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1.5% regression in jetstream at 536278:536343

Project Member Reported by alexclarke@chromium.org, Feb 21 2018

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Feb 21 2018

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=814168

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=b15233dba367996fd3ffe036631650e0a6a7e5c3d5db1e7c568848d6580a9d6a


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

chromium-rel-win7-x64-dual
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Feb 21 2018

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/12f1bef7840000
Project Member

Comment 5 by 42576172...@developer.gserviceaccount.com, Feb 23 2018

Cc: bmeu...@chromium.org mvstan...@chromium.org jarin@chromium.org mstarzinger@chromium.org rmcilroy@chromium.org
Owner: mvstan...@chromium.org
Status: Assigned (was: Untriaged)
📍 Found significant differences after each of 2 commits.
https://pinpoint-dot-chromeperf.appspot.com/job/11eba68f840000

[Ignition] [TurboFan] Generate speculation poison in code generator. by rmcilroy@chromium.org
https://chromium.googlesource.com/v8/v8/+/a021b6c42dd96c1093ef910a7c30d21b0ee4e3c4

[turbofan] Masking/poisoning in codegen (optimized code, x64) by mvstanton@chromium.org
https://chromium.googlesource.com/v8/v8/+/8f489e73b23f764801a35abaaf10772406fd4209

Understanding performance regressions:
  http://g.co/ChromePerformanceRegressions
Mergedinto: 814053
Status: Duplicate (was: Assigned)

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