Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 1061bbd0c00ff7f5e9a198b540355df1ea67645f
https://github.com/WebKit/WebKit/commit/1061bbd0c00ff7f5e9a198b540355df1ea67645f
Author: Nathan Solomon <[email protected]>
Date: 2025-10-24 (Fri, 24 Oct 2025)
Changed paths:
M Source/WebCore/html/parser/HTMLNameCache.h
Log Message:
-----------
Increase HTMLNameCache max capacity to reduce cache misses
https://bugs.webkit.org/show_bug.cgi?id=300227
rdar://162019828
Reviewed by Ryosuke Niwa.
We currently use the HTMLNameCache to cache frequently seen attribute names and
values in the HTMLFastPathParser.
HTMLNameCache uses two caches under the hood - an AtomString cache for storing
attributes and a QualifiedName cache for storing common attribute names. They
both have the same max size.
The maximum cache size was initially set to 512 for both. Increasing the max
size to 2048 for AtomString cache has these effects:
On SP3, it increases the hit rate from from 93.35% -> 96.71% (+3.36%) on SP3.
On a real-world workload: it increases hit rate from 56.11% -> 60.61%
(Real-world: +4.5%)
This is mostly insiginficant overall on SP3, but it is a .75 - 1.2%%
improvement on TODOMVC-Jquery subtest.
* Source/WebCore/html/parser/HTMLNameCache.h:
Canonical link: https://commits.webkit.org/302119@main
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