On May 17, 2012, at 5:28 AM, Paul Kraus wrote: > On Wed, May 16, 2012 at 3:35 PM, Paynter, Richard > <richard.payn...@infocrossing.com> wrote: > >> Does anyone know what the minimum value for zfs_arc_max should be set to? >> Does it depend on the amount of memory on the system, and – if so – is there >> a formula, or percentage, to use to determine what the minimum value is? > > I would assume that it should not be set any lower than `kstat > zfs::arcstats:c_min`, which I assume you can set with zfs_arc_min in > /etc/system, but that does not really answer your question.
arc_c_max and arc_c_min are used for different things. If you make significant changes there, then it is a good idea to set both zfs_arc_min, zfs_arc_max, and zfs_arc_meta_limit as a set. NB, the minimum size of these is 64MB. -- richard -- ZFS Performance and Training richard.ell...@richardelling.com +1-760-896-4422
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