G'Day Vish, On Tue, Aug 11, 2009 at 03:39:01PM -0700, vhiz wrote: > Hi, > > I am trying to figure out the service time distribution for disk > reads using dtrace. I am using Solaris Community edition, with UFS as the > filesystem. I have written simple scripts which use fbt, but am not getting > any consistency in my results. The biggest hindrance seems to be the caching > effects. Any suggestions on how to get an average even though caching effects > are there?
Which cache do you mean? If you use the io provider, you should be close enough to disk access that you'll only be affected by the on-disk cache. On-disk cache hits are valid I/O anyway. Brendan -- Brendan Gregg, Sun Microsystems Fishworks. http://blogs.sun.com/brendan _______________________________________________ dtrace-discuss mailing list dtrace-discuss@opensolaris.org
