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Issue 918585 link

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Issue metadata

Status: Assigned
Owner:
Cc:
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EstimatedDays: ----
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Pri: 2
Type: Bug-Regression



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5.5%-330.7% regression in rasterize_and_record_micro.top_25 at 619307:619311

Project Member Reported by lanwei@chromium.org, Jan 2

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=918585

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=f04a0e9c918283925c4185bf680034ab87203a9f877ebe3d6ad49ed7af897336


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

linux-perf

rasterize_and_record_micro.top_25 - Benchmark documentation link:
  None
📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/159ee39a940000
There was a regression (to our bad value), then a progression (better than the baseline) then another regression (to the same bad value). So it looks kinda like reverts or something but the progression is interesting. I've started some bisects of each regression point.
📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/14c2ab57940000
Project Member

Comment 7 by 42576172...@developer.gserviceaccount.com, Jan 18 (4 days ago)

Comment 8 by danakj@chromium.org, Jan 18 (4 days ago)

Owner: sadrul@chromium.org
Status: Assigned (was: Untriaged)
This test seems to jump between a low and high value every so often, where the higher value is a 300% regression. This means a lot of false alerts but also anything real will be hidden in that noise.


300.png
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Project Member

Comment 9 by 42576172...@developer.gserviceaccount.com, Jan 18 (4 days ago)

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/178aa86a540000

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