Bug 210950

Summary: Disable useKernTCSM=false for JSC stress tests to make EWS faster
Product: WebKit Reporter: Yusuke Suzuki <ysuzuki>
Component: New BugsAssignee: Yusuke Suzuki <ysuzuki>
Status: RESOLVED FIXED    
Severity: Normal CC: aakash_jain, ap, jbedard, mark.lam, sbarati, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
See Also: https://bugs.webkit.org/show_bug.cgi?id=199117
Attachments:
Description Flags
Patch none

Description Yusuke Suzuki 2020-04-23 18:03:39 PDT
Disable useKernTCSM=false for JSC stress tests to make EWS faster
Comment 1 Yusuke Suzuki 2020-04-23 18:07:23 PDT
Created attachment 397410 [details]
Patch
Comment 2 Yusuke Suzuki 2020-04-23 18:08:16 PDT
Comment on attachment 397410 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=397410&action=review

> Tools/Scripts/run-javascriptcore-tests:-532
> -}

I'm not sure whether webkitpy's JSC_useKernTCSM also affects on EWS. So I would like to check the environment variables in EWS first.
Comment 3 Yusuke Suzuki 2020-04-23 19:09:59 PDT
EWS JSC stress bot finishes with 59:23, so this patch is effective.
Comment 4 Yusuke Suzuki 2020-04-23 19:10:28 PDT
Comment on attachment 397410 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=397410&action=review

>> Tools/Scripts/run-javascriptcore-tests:-532
>> -}
> 
> I'm not sure whether webkitpy's JSC_useKernTCSM also affects on EWS. So I would like to check the environment variables in EWS first.

I've ensured this works on EWS.
Comment 5 Mark Lam 2020-04-23 20:21:02 PDT
Comment on attachment 397410 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=397410&action=review

r=me

>>> Tools/Scripts/run-javascriptcore-tests:-532
>>> -}
>> 
>> I'm not sure whether webkitpy's JSC_useKernTCSM also affects on EWS. So I would like to check the environment variables in EWS first.
> 
> I've ensured this works on EWS.

Jonathan Bedard (cc'ed) added this change.  I'm fine with removing it since we have evidence that it speeds up the EWS.
Comment 6 EWS 2020-04-23 20:31:14 PDT
Committed r260617: <https://trac.webkit.org/changeset/260617>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 397410 [details].
Comment 7 Radar WebKit Bug Importer 2020-04-23 20:32:14 PDT
<rdar://problem/62278398>
Comment 8 Jonathan Bedard 2020-04-24 06:15:47 PDT
Comment on attachment 397410 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=397410&action=review

>>>> Tools/Scripts/run-javascriptcore-tests:-532
>>>> -}
>>> 
>>> I'm not sure whether webkitpy's JSC_useKernTCSM also affects on EWS. So I would like to check the environment variables in EWS first.
>> 
>> I've ensured this works on EWS.
> 
> Jonathan Bedard (cc'ed) added this change.  I'm fine with removing it since we have evidence that it speeds up the EWS.

I would agree. I have evidence JSC_useKernTCSM=false speeds up layout tests, but never had evidence for JSC tests.