Bug 261364

Summary:	High system cpu load during IDL generation
Product:	WebKit	Reporter:	Elliott Williams <emw>
Component:	Tools / Tests	Assignee:	Elliott Williams <emw>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	ap, 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=265749
Bug Depends on:
Bug Blocks:	262321

Description Elliott Williams 2023-09-08 19:25:19 PDT

On a M1 Ultra Mac Studio, WebCore’s derived sources target takes ~ 50sec to build, with most of that time spent generating IDLs. It scales to use all CPUs, but puts comparatively more load on the system than on user processes. We should figure out why this is such a system-heavy operation, and optimize it.

Comment 1 Radar WebKit Bug Importer 2023-09-15 19:27:00 PDT

<rdar://problem/115584014>

Comment 2 Elliott Williams 2023-09-21 13:22:03 PDT

Pull request: https://github.com/WebKit/WebKit/pull/18038

Comment 3 EWS 2023-09-27 21:08:42 PDT

Committed 268561@main (eadc88e2217f): <https://commits.webkit.org/268561@main>

Reviewed commits have been landed. Closing PR #18038 and removing active labels.

Comment 4 EWS 2023-09-28 13:28:27 PDT

Committed 268606@main (aa8545f5047b): <https://commits.webkit.org/268606@main>

Reviewed commits have been landed. Closing PR #18373 and removing active labels.