>Please. UFS basically does the same - uses most of free memory as a >cache. It's just the way page cache is divided and accounted for so >you can actually see UFS cached pages reported as free (not all of >them but you get the idea).
The big difference here is that when UFS was fixed so the pages show up as "Freemem" and not in use, reclaiming such pages for other uses became trivial: scanning and paging out pages was not necessary anymore (UFS can reclaim pages from the freelist because we still know what they contain) >Now ZFS doesn't use page cache for caching rather kma directly. >The side effect right now is that tools like vmstat do not take this >into account and the do not reported memory used for zfs caches as >free memory as they do for ufs caches. And those pages must be explicitely freed before they can be used by other parts of the system. Casper _______________________________________________ opensolaris-discuss mailing list [email protected]
