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Issue 801949 link

Starred by 1 user
Status: WontFix
Owner:
kerrnel@chromium.org
Closed: Jan 2018
Cc:
liberato@google.com
kerrnel@chromium.org
creis@chromium.org
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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4.4%-177% regression in media.desktop at 528897:529174

Project Member Reported by liberato@google.com, Jan 15 2018 
looks like there was an improvement, and then it returned to normal.  still doing a bisect just in case, since it's a big change.
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Jan 15 2018 

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=801949

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=5b80d8f4cd51775f6862a21b4d80f1c97beb53c35bf3d7b94661729a0aa76015


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

chromium-rel-mac-retina
chromium-rel-mac11
chromium-rel-mac11-air
chromium-rel-mac11-pro
chromium-rel-mac12
chromium-rel-mac12-mini-8gb
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Jan 15 2018

Cc: creis@chromium.org kerrnel@chromium.org
Owner: kerrnel@chromium.org
Status: Assigned (was: Untriaged)
📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/14ab4d60840000

macOS V2 Sandbox: Disable V2 for  GPU processes.
By kerrnel@chromium.org · Fri Jan 12 15:20:44 2018
chromium @ 6f59d9136999c22bbcbe226f00cd58563b29d81d

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

Comment 4 by kerrnel@chromium.org, Jan 15 2018

Status: WontFix (was: Assigned)
Fascinating the V2 sandbox indeed seems to have dramatically improved buffering time. Hopefully that improvement returns when we re-land: unfortunately it caused many other regressions and stability problems that I am addressing.
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