Tuning is generally evil, so be extra cautious with this; with time, as we understand the beast, we''ll get rid of such things: http://blogs.sun.com/roch/entry/tuning_the_knobs -r ____________________________________________________________________________________ Performance, Availability & Architecture Engineering Roch Bourbonnais Sun Microsystems, Icnc-Grenoble Senior Performance Analyst 180, Avenue De L''Europe, 38330, Montbonnot Saint Martin, France Roch.Bourbonnais at Sun.Com http://blogs.sun.com/roller/page/roch
Hello Roch,
Tuesday, September 19, 2006, 5:00:22 PM, you wrote:
R> Tuning is generally evil, so be extra cautious with this;
R> with time, as we understand the beast, we''ll get rid of
R> such things:
R>
R> http://blogs.sun.com/roch/entry/tuning_the_knobs
And changing vdev prefetch size could make HUGE difference - at least
it did here. Generally the bigger work set and more random read IO the
more benefit there could be from lowering it down I guess.
Roch - thank you for that script.
--
Best regards,
Robert mailto:rmilkowski at task.gda.pl
http://milek.blogspot.com