[MLton-devel] GC problem
Henry Cejtin
henry@sourcelight.com
Wed, 14 Aug 2002 01:30:38 -0500
I think that the point of the comment on only parts of fromSpace being paged
in is that if VM pages had a size of 1 byte (the optimal case), then during
the copy phase of a stop-and-copy GC you only need 2*live worth of RAM. At
that point you unmap the old fromSpace. Of course VM pages are much larger
than 1 byte so you have some problem with granularity. In the old days
Linux's VM was pretty bad under load large enough to make it swap and
although it has gotten much better, it isn't clear if this is the way to go.
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