On Fri, Dec 02, 2011 at 09:34:17PM +0100, Per Sjoholm wrote: > On 12/02/2011 07:44 PM, Gary Mills wrote: > >On Thu, Dec 01, 2011 at 08:59:48AM -0600, Gary Mills wrote: > >>I'm in the process of setting up a fileserver running oi_151a. How > >>can I determine the performance improvement from adding log and cache > >>devices? I'm using filebench with the fileserver personality. Is > >>that my best choice? So far, I've tried filebench directly on the > >>server and also on an NFS client. What statistics should I be > >>watching? > >So, can nobody answer my questions? > > > http://constantin.glez.de/blog/2011/02/frequently-asked-questions-about-flash-memory-ssds-and-zfs > # How Do I Know if an SSD Will Really Help My Write Performance? > <http://constantin.glez.de/blog/2011/02/frequently-asked-questions-about-flash-memory-ssds-and-zfs#write> > # How Do I Know if an SSD Will Really Help My Read Performance? > <http://constantin.glez.de/blog/2011/02/frequently-asked-questions-about-flash-memory-ssds-and-zfs#read>
Thanks. That article provides me with plenty of leads. It looks as if I should use filebench only a load generator, ignoring the statistics that it produces. Then I should use Richard Elling's zilstat to evaluate synchronous write performance and Ben Rockwood's arc_summary to evaluate read performance. I can certainly do that. -- -Gary Mills- -refurb- -Winnipeg, Manitoba, Canada- _______________________________________________ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss
