On Fri, Dec 21, 2007 at 09:44:03AM -0500, Rob Logan wrote: > from man iostat > > > - number of waiting requests in (s)sd queue > > wait average number of transactions waiting for service > (queue length) > This is the number of I/O operations held in the > device driver queue waiting for acceptance by the > device. > > - how IO requests are getting into (s)sd queue for specyfic LUN > > actv average number of transactions actively being ser- > viced (removed from the queue but not yet com- > pleted) > This is the number of I/O operations accepted, but > not yet serviced, by the device. > > - how long is queue at the moment > > wsvc_t average service time in wait queue, in mil- > liseconds > > - when IO is removed from (s)sd queue > > asvc_t average service time of active transactions, in > milliseconds > > type: iostat -xcez 1
Thank you Rob for all the info. But iostat gives "average" view. Which might be misleading. I would like to use DTrace which let me run "trigger" when all the events happens so I would get precise informations. I should have better explained. Sorry. Regards przemol -- http://przemol.blogspot.com/ ---------------------------------------------------------------------- Szukasz kucharskiej inspiracji na swieta? Wejdz na >>> http://link.interia.pl/f1cbb _______________________________________________ storage-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/storage-discuss
