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Issue 752688 link

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Issue metadata

Status: WontFix
Owner:
Last visit > 30 days ago
Closed: Aug 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 1
Type: Bug



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GFX guard 8/1/2017 - 8/5/2017: graphics_WebGLAquarium

Project Member Reported by gurcheta...@chromium.org, Aug 4 2017

Issue description

GFX guard 8/1/2017 - 8/5/2017: graphics_WebGLAquarium regressions on certain Intel boards 

These regressions seem to only affect some Intel boards (Braswell?):

Test: graphics_WebGLAquarium/avg_energy_rate_1000_fishes
Regressions: 15 - 20%

https://chromeperf.appspot.com/report?sid=2fb3eeaa04f15118951517a341aa7bab7bf8912d8c20b8809f697bf08dc0ddc7&rev=31120800959207100

https://chromeperf.appspot.com/report?sid=3b8d54faa96eaaa3e51afb9eba11de8ecb36ba814abf2161ffa8dc6f989b0bf9

ChromeOS Version range: 61.9656.0.0 - 61.9675.0.0 
Chrome Version range: 61.0.3132.0 - 61.0.3136.5 

CrOS changes: https://crosland.corp.google.com/log/9656.0.0..9675.0.0

CrOS changes: https://chromium.googlesource.com/chromium/src/+log/61.0.3132.0..61.0.3136.0?pretty=fuller&n=10000

Nothing obvious -- need to bisect.
 
Could be related to HiZ disabling on Braswell..
Labels: -Pri-3 Pri-2
Cc: gurcheta...@chromium.org
Owner: marc...@chromium.org
Hmmm Hiz disable happened at https://chromium-review.googlesource.com/c/490534 (	9505.0.0), but the regressions happened after 9656.0.0 (for reef some 60 backports seem have caused this).  The affected boards seem to be reef and cyan.  @marcheu has graciously volunteered to investigate...
Labels: Gfx-Guard
Labels: -Pri-2 M-62 Pri-1
Status: Started (was: Assigned)
Status: WontFix (was: Started)
Hah, actually it's notabug. It coincides with us having more fps:

https://chromeperf.appspot.com/report?sid=20df28a7abd41d5fbd15abd3f0fdcd8884c3e193ab88f19413d2cb653f2f01e7&rev=31120800959207100

More fps = more energy, but that's ok. I wonder if we can somehow filter out that case.

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