257622 2023-06-01 14:37:42 -0700 Add a way to run incremental GC sweeps during runloop idle time in between rendering updates 2023-06-15 07:56:23 -0700 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 257650 258032 1 wenson_hsieh wenson_hsieh jarred mark.lam webkit-bug-importer oldest_to_newest 1959418 0 wenson_hsieh 2023-06-01 14:37:42 -0700 . 1959424 1 jarred 2023-06-01 14:57:58 -0700 We had a similar issue in Bun and ended up doing this: https://github.com/oven-sh/bun/blob/4378ef8e97839f950ddfa180e466d0a8db187681/src/bun.js/event_loop.zig#L320 Just before the event loop idles, we check if the heap size changed since the previous check and if so, we schedule the garbage collector asynchronously. Then every so often we run a synchronous GC It fixed issues where Bun’s memory usage permanently would go up. But we still have issues with synchronous work. It doesn’t go down much if you do lots of blocking synchronous work 1960625 2 webkit-bug-importer 2023-06-08 14:38:23 -0700 <rdar://problem/110488068> 1961244 3 mark.lam 2023-06-12 22:53:20 -0700 <rdar://problem/110076652> 1961473 4 wenson_hsieh 2023-06-13 21:09:25 -0700 Pull request: https://github.com/WebKit/WebKit/pull/14945 1961802 5 ews-feeder 2023-06-15 07:56:21 -0700 Committed 265197@main (1a501dce9fa2): <https://commits.webkit.org/265197@main> Reviewed commits have been landed. Closing PR #14945 and removing active labels.