Hello przemolicc, Friday, December 21, 2007, 3:02:32 PM, you wrote:
ppf> 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 ppf> Thank you Rob for all the info. But iostat gives "average" view. ppf> Which might be misleading. I would like to use DTrace which let me ppf> run "trigger" when all the events happens so I would get precise ppf> informations. ppf> I should have better explained. Sorry. Maybe this can help you. http://blogs.sun.com/chrisg/resource/scsi_d/scsi.d-1.12 -- Best regards, Robert Milkowski mailto:[EMAIL PROTECTED] http://milek.blogspot.com _______________________________________________ storage-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/storage-discuss
