On 09/26/2012 05:18 PM, Matt Van Mater wrote: >> >> If the added device is slower, you will experience a slight drop in >> per-op performance, however, if your working set needs another SSD, >> overall it might improve your throughput (as the cache hit ratio will >> increase). >> > > Thanks for your fast reply! I think I know the answer to this question, > but what is the best way to determine how large my pool's l2arc working set > is (i.e. how much l2arc is in use)?
Go grab arcstat.pl from http://blog.harschsystems.com/2010/09/08/arcstat-pl-updated-for-l2arc-statistics/ - that's the tool you're looking for. Cheers, -- Saso _______________________________________________ zfs-discuss mailing list email@example.com http://mail.opensolaris.org/mailman/listinfo/zfs-discuss