Bug 1952626 Comment 2 Edit History

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Original comment by
on 
The WeakSet profile roughly breaks down as follows:

* 28% waiting for a helper thread under `js::GCParallelTask::joinNonIdleTask`.
* 24% under `AddWeakSetEntryImpl`, mostly jemalloc and barrier overhead.
* 19% under `GCRuntime::findSweepGroupEdges`.
* 17% under `:StoreBuffer::ValueEdge::trace` as part of a minor GC.

The WeakMap one is similar.
Revision 1 by
on 
The WeakSet profile roughly breaks down as follows:

* 28% waiting for a helper thread under `js::GCParallelTask::joinNonIdleTask`.
* 24% under `AddWeakSetEntryImpl`, mostly jemalloc and barrier overhead.
* 19% under `GCRuntime::findSweepGroupEdges`.
* 17% under `StoreBuffer::ValueEdge::trace` as part of a minor GC.

The WeakMap one is similar.

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