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Issue 746542 link

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Issue metadata

Status: Assigned
Owner:
Last visit > 30 days ago
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 3
Type: Bug-Regression



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cros/intel: Regression in graphics_WebGLAquarium/meminfo_MemUsed between 9676:9687

Project Member Reported by chadversary@chromium.org, Jul 19 2017

Issue description

The performance dashboard identified a 37.0% regression in graphics_WebGLAquarium/meminfo_MemUsed on cros-sand at revision range 31380000967600001:31380000968700000.

Manual inspection shows that the performance regression occurred on many Intel boards: at least Apollo Lake, Brasswell, Broadwell, Haswell, Ivybridge. The regression seems to be more than noise, because since its onset around 9687 (2017-06-27), the performance hasn't returned to normal as of 9756 (today, 2017-07-19).

I haven't determined if the bug is in Chrome or in the driver stack.

Dashboard, zoomed in:
https://chromeperf.appspot.com/report?masters=ChromeOS_Graphics&tests=graphics_WebGLAquarium%2Fmeminfo_MemUsed&checked=meminfo_MemUsed%2Cmeminfo_MemUsed_ref%2Cref&bots=cros-sand,cros-samus,cros-link,cros-peppy,cros-cyan&start_rev=31300000966600000&end_rev=31420000969400000

Dashboard, zoomed out:
https://chromeperf.appspot.com/report?masters=ChromeOS_Graphics&tests=graphics_WebGLAquarium%2Fmeminfo_MemUsed&checked=meminfo_MemUsed%2Cmeminfo_MemUsed_ref%2Cref&bots=cros-sand,cros-samus,cros-link,cros-peppy,cros-cyan&start_rev=31300000966600000&end_rev=31600000975800000
 
I would treat these memory usage bugs as p3. The bottom line is that this should be tested at the Chrome level, and currently it isn't.

So it is mostly impossible for us to get those fixed and keep them under control.
Labels: -Pri-2 Pri-3
Status: Assigned (was: Untriaged)

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