Closed
Bug 831299
Opened 12 years ago
Closed 3 months ago
Ionmonkey: Inline more of js::ion::NewGCThing
Categories
(Core :: JavaScript: GC, defect)
Core
JavaScript: GC
Tracking
()
RESOLVED
WORKSFORME
People
(Reporter: h4writer, Unassigned)
References
Details
Currently we do a OOL VMCall when arena is empty. This happens in raytrace 1 out of 62 times. We could add an ool path (not vm) to pull a new arena in GC's freelists. Than we can stay in jitcode, except in cases where there are no arenas available at all, and we need to GC or allocate a new chunk.
Currently the time spend in the OOL VMCall is 3% of raytrace. The OOL path will probably be much faster and almost remove the total time.
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Comment 1•12 years ago
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This has the potential to be quite hard because of the background sweep thread, but would be a nice stopgap until we get Generational GC. And even with a fully-tuned GGC, this will still be useful for shapes and anything else we can't nursery allocate.
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Assignee | |
Updated•10 years ago
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Assignee: general → nobody
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Updated•2 years ago
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Severity: normal → S3
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Comment 2•3 months ago
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Is this bug still relevant?
Component: JavaScript Engine → JavaScript: GC
Flags: needinfo?(jcoppeard)
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Comment 3•3 months ago
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We have generational GC now and the allocation paths for that are inlined so this is no longer relevant.
Status: NEW → RESOLVED
Closed: 3 months ago
Flags: needinfo?(jcoppeard)
Resolution: --- → WORKSFORME
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Description
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