RESOLVED FIXED 219453
[iOS] Add a feature flag to stop leaking an XPC boost message to XPC services 
https://bugs.webkit.org/show_bug.cgi?id=219453
Summary [iOS] Add a feature flag to stop leaking an XPC boost message to XPC services
Chris Dumez
Reported 2020-12-02 13:21:02 PST
Stop leaking an XPC boost message to XPC services on builds where RunningBoard is able to give the right priorities to our XPC services based on the type of RunningBoard assertion is being held. There is no behavior change for the Network/WebContent processes since those were blocklisted in RunningBoard (Turning on the RB_full_manage_WK_jetsam feature flag gives us the default RunningBoard behavior without blocklisting). However, this allows the new GPUProcess to move to IDLE jetsam band when homing out of MobileSafari, which makes the GPUProcess eligible for the freezer. Previously, the leaked boost message would keep the GPUProcess in a higher jetsam band.
Attachments
Patch (8.56 KB, patch)
2020-12-02 13:28 PST, Chris Dumez 		no flags
DetailsFormatted DiffDiff
Patch (8.79 KB, patch)
2021-01-05 17:00 PST, Chris Dumez 		no flags
DetailsFormatted DiffDiff
Show Obsolete (1) View All Add attachment proposed patch, testcase, etc.
Chris Dumez
Comment 1 2020-12-02 13:21:27 PST
<rdar://47402853>
Chris Dumez
Comment 2 2020-12-02 13:28:37 PST
Created attachment 415250 [details] Patch
Geoffrey Garen
Comment 3 2020-12-02 13:47:55 PST
Comment on attachment 415250 [details] Patch r=me
EWS
Comment 4 2020-12-08 09:40:00 PST
Committed r270542: <https://trac.webkit.org/changeset/270542> All reviewed patches have been landed. Closing bug and clearing flags on attachment 415250 [details].
Chris Dumez
Comment 5 2020-12-10 10:06:45 PST
Reverted r270542 for reason: Seems to have regressed perf benchmarks Committed r270632: <https://trac.webkit.org/changeset/270632>
Chris Dumez
Comment 6 2020-12-18 09:24:20 PST
Committed r270969: <https://trac.webkit.org/changeset/270969>
Chris Dumez
Comment 7 2020-12-20 15:16:22 PST
Reverted r270969 for reason: Regressed MotionMark with GPUProcess enabled Committed r271017: <https://trac.webkit.org/changeset/271017>
Chris Dumez
Comment 8 2021-01-05 17:00:28 PST
Created attachment 417056 [details] Patch
EWS
Comment 9 2021-01-05 19:25:14 PST
Committed r271189: <https://trac.webkit.org/changeset/271189> All reviewed patches have been landed. Closing bug and clearing flags on attachment 417056 [details].
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