Status: Accepted
Owner: [email protected]
Labels: Type-Bug Priority-Medium NewGC
New issue 1611 by [email protected]: NewGC: Review heuristics
http://code.google.com/p/v8/issues/detail?id=1611
This is metabug with heuristics and tweak that are too small to be filed
separately.
We need to review the following heuristics:
- Incremental marking activation in release mode;
- LAZY_CONSERVATIVE sweeping limit in MarkCompactCollector::SweepSpace
(currently sweeps new space size);
- If we shift huge array in the loop we might end up pushing too much into
the marking deque. Maybe we should check one or two elements on top/bottom
of the marking deque to see whether they are equal to old_start.
- Seems like we could relax restriction for cons-string short-circuiting
during mark-sweep with store buffers (we don't need start of the object to
update the write barrier).
- Incremental marking activation in debug mode (currently always, but to
improve coverage we need to disable it for some tests).
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