Bug 155443

Summary: Regression(r197981): Huge regression on Mac PLT
Product: WebKit Reporter: Chris Dumez <cdumez>
Component: Layout and RenderingAssignee: Chris Dumez <cdumez>
Status: RESOLVED FIXED    
Severity: Normal CC: barraclough, jonlee, simon.fraser, webkit-bug-importer, zalan
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Bug Depends on:    
Bug Blocks: 23364    
Attachments:
Description Flags
Patch none

Description Chris Dumez 2016-03-14 10:35:24 PDT 
We have experience a huge regression on Mac PLT after <http://trac.webkit.org/changeset/197981>: (rdar://problem/25113391). So disable the feature until the performance issue is resolved.
Comment 1 Chris Dumez 2016-03-14 10:35:36 PDT 
rdar://problem/25113391
Comment 2 Chris Dumez 2016-03-14 10:37:20 PDT 
Created attachment 273987 [details]
Patch
Comment 3 Chris Dumez 2016-03-14 12:01:13 PDT 
Comment on attachment 273987 [details]
Patch

Clearing flags on attachment: 273987

Committed r198145: <http://trac.webkit.org/changeset/198145>
Comment 4 Chris Dumez 2016-03-14 12:01:19 PDT 
All reviewed patches have been landed.  Closing bug.
Comment 5 Chris Dumez 2016-03-14 20:38:50 PDT 
The bots did not recover after this change.
Comment 6 Chris Dumez 2016-03-14 20:51:27 PDT 
Reverted r198145 for reason:

This attempt to disable the feature did not fix the PLT regression

Committed r198188: <http://trac.webkit.org/changeset/198188>