Status: Accepted
Owner: [email protected]
CC: [email protected], erik.corry, [email protected]
Labels: Type-Bug Priority-Medium NewGC
New issue 2194 by [email protected]: Remove eager sweeping for lazy
swept spaces.
http://code.google.com/p/v8/issues/detail?id=2194
The heuristics in SweepSpace as far too inaccurate to be used as an
indicator how much should be swept eagerly. We should completely remove
them and sweep no (or just one) page eagerly.
For this to be feasible we need to make AdvanceSweeper "smarter" so that it
actually sweeps a page that contains enough contiguous to hold the request
amount of memory.
Currently it sweeps until it accumulated enough free bytes, but those bytes
are not guaranteed to be contiguous or even on the same page. This leads to
excessive expansion of old-space, because new pages are added too soon.
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