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Issue 865582 link

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Issue metadata

Status: Available
Owner: ----
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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2.5%-2.8% regression in rasterize_and_record_micro.top_25 at 575245:575277

Project Member Reported by npm@chromium.org, Jul 19

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=865582

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=2dc559265f765727e7d100b3a7e67fd663f911525276e0727cc278d15d73f53e


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

linux-perf
Cc: toniki...@igalia.com
Owner: toniki...@igalia.com
Status: Assigned (was: Untriaged)
📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/1465eed1a40000

Migrate AutofillDownloadManager to SimpleURLLoader by tonikitoo@igalia.com
https://chromium.googlesource.com/chromium/src/+/3328d5c434b366bf9c6ddd344867be2c7f209a5e
2.855 → 2.897 (+0.0423)

Understanding performance regressions:
  http://g.co/ChromePerformanceRegressions
Cc: jam@chromium.org mmenke@chromium.org
Owner: toniki...@chromium.org
If you look at the graph over time, it appears to have historically had a bi-modal distribution (https://chromeperf.appspot.com/report?sid=748a299c03f94bea7f3966bc1afa32ad4d1ddbccdec7d46aed013ed9b460ff57&start_rev=513348&end_rev=576788), going back and forth between two values.

Given the unlikelihood of a change in the code to fetch autofill data having an impact on rasterization performance that's only visible on one Linux test suite, I'd tend to call this noise (Maybe it's based on binary size, or relative placement of two methods within the binary).
Cc: vmp...@chromium.org wkorman@chromium.org
+benchmark owners for comment on noise.
Cc: -toniki...@igalia.com toniki...@chromium.org
Owner: ----
Status: Available (was: Assigned)

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