Since OS X doesn't has a RAM disk, might a mounted DMG be used to
speed up certain
jobs? Might a DMG's memory get somehow marked as 'non-pagable'?
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I imagine, but please correct me if I'm mistaken, that DMG files are
mounted as loopback devices, similar to the way linux mounts ISO files,
which wouldn't seem to offer any significant benefit to performance.
Ramdisks are very possible with OS X, as they are with almost any BSD,
but the system itself already caches files to unused RAM, so the benefit
you see may not be that significant. For your reading pleasure-
GUI for making ram disks
http://www.clarkwoodsoftware.com/rambunctious/RDOSX.html
DIY article- http://www.macosxhints.com/article.php?story=20020530084607311
Note, I haven't tried any of this, and I certainly don't know what all
may have changed since these were written, it's just what I turned up in
google.
Later,
Fargo
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