Subject: implementing "swap tokens" to prevent excessive paging
to disk To: None <> From: Blair Sadewitz <> List: tech-kern
Date: 08/13/2007 13:33:40 I read yesterday that linux passes a
"swap token" around to allow the system to recover when a lot of
swapping's going on.  If we had something like this, we'd be a
lot closer to marking yamt's clock-pro implementation non-
experimental (the only significant problem I've encountered with
it is that there's a tendency for "hot" file pages to consume a
majority of available memory to the detriment of "cooler"
exec/anon pages which really shouldn't be paged out).  For more
information, search the mailing list archives for my posts
requesting testers for PDPOLICY_CLOCKPRO. Also, this is a good
starting point:   I'm interested in what those more experienced
than I have to say.