>IIRC dump is special. > >As for swap... really, you don't want to swap. If you're swapping you >have problems. Any swap space you have is to help you detect those >problems and correct them before apps start getting ENOMEM. There >*are* exceptions to this, such as Varnish. For Varnish and any other >apps like it I'd dedicate an entire flash drive to it, no ZFS, no >nothing.
Yes and no: the system reserves a lot of additional memory (Solaris doesn't over-commits swap) and swap is needed to support those reservations. Also, some pages are dirtied early on and never touched again; those pages should not be kept in memory. But continuously swapping is clearly a sign of a system too small for its job. Of course, compressing and/or encrypting swap has interesting issues: in order to free memory by swapping pages out requires even more memory. Casper _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
