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Issue 798352 link

Starred by 1 user
Status: WontFix
Owner:
thomasanderson@chromium.org
Closed: Jul 17
Cc:
dnicoara@chromium.org
thomasanderson@chromium.org
dpranke@chromium.org
tdres...@chromium.org
█ alexclarke@chromium.org
lukasza@chromium.org
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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7.6%-20.5% regression in system_health.common_desktop at 525916:525952

Project Member Reported by alexclarke@chromium.org, Jan 2 2018 
See the link to graphs below.
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Jan 2 2018 

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=798352

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=7333210ac6d930bb3ab54aca9ca9f8e67fb898b31ee18832ab752eb1d7fa2745


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

linux-release
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Jan 2 2018

Cc: lukasza@chromium.org dnicoara@chromium.org dpranke@chromium.org thomasanderson@chromium.org
Owner: thomasanderson@chromium.org
Status: Assigned (was: Untriaged)
📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/14b17603040000

Reland "Statically link fontconfig on Linux"
By thomasanderson@chromium.org · Fri Dec 22 06:20:09 2017
chromium @ 65f919d2d86e54c851b0327740a330d152b07ed5

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

Comment 4 by sullivan@chromium.org, Jan 25 2018

Cc: tdres...@chromium.org
thomasanderson: have you had a chance to investigate this bug yet? Looks like your CL regressed expected queueing time on Linux. cc-ing metric owner tdresser in case there are questions.

Comment 5 by thomasanderson@chromium.org, Jan 25 2018 

I haven't looked at this yet.  The issue was caused by using a newer version of fontconfig, which is third party code.  I think a fontconfig bisect will be necessary to track down the issue.

Comment 6 by tdres...@chromium.org, May 2 2018 

thomasanderson@, are you the right owner to drive the fontconfig bisect?
This regression still exists.

Comment 7 by thomasanderson@chromium.org, May 2 2018 

Yes, I'm probably the right owner.  Still getting to it :)

Comment 8 by thomasanderson@chromium.org, Jul 17

Status: WontFix (was: Assigned)
The graphs are showing system_health.common_desktop are currently at their lowest values of all time, so I'm closing this issue.
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