Bug 255226

Summary:	[macOS] Tab Suspension ~3.5% Membuster MacBookAir8,2 regression
Product:	WebKit	Reporter:	Miguel Salinas <miguel_salinas>
Component:	WebKit Process Model	Assignee:	Miguel Salinas <miguel_salinas>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Mac (Intel)
OS:	macOS 13

Description Miguel Salinas 2023-04-10 08:27:24 PDT

When running the membuster benchmark on MacBookAir8,2 with background tab suspension enabled, we are seeing a ~8% regression in performance. It appears to be due to the process having too low of a priority when responding to low memory OS signals.

Comment 1 Miguel Salinas 2023-04-10 08:28:17 PDT

rdar://106969950

Comment 2 Miguel Salinas 2023-04-14 15:52:55 PDT

Pull request: https://github.com/WebKit/WebKit/pull/12763

Comment 3 EWS 2023-04-21 14:35:37 PDT

Committed 263264@main (0420e99f1060): <https://commits.webkit.org/263264@main>

Reviewed commits have been landed. Closing PR #12763 and removing active labels.