On Thu, Jun 18, 2009 at 1:29 AM, Pete French <petefre...@ticketswitch.com>wrote:
> > All the ZFS tuning guides for FreeBSD (including one on the FreeBSD > > ZFS wiki) have recommended values between 64M and 128M to improve > > stability, so that what I went with. How much of my max kmem is it > > safe to give to ZFS? > > If you are on amd64 then don't tune it, it will tune itself. If you > are on i386 (or an earlier verions of amd64) then 128M on a 2 gig machine > should be OK, assuming you have kmem_size_max set to the full 1500 odd. > Those are numbers which come up time and time again - I ran reliably with > them for ages, until the latest -STABLE. > My "rule of thumb" for 32-bit i386 systems has been to: - assign half of RAM to kmem (up to the max of ~1500 on 7.0/7.1) - assign half of kmem to zfs_arc_max So far, for my workloads (nfs/cifs file servers, cups print servers, rsync servers, kde4 desktop), it's worked well. -- Freddie Cash fjwc...@gmail.com _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
