On Mon, 7 Nov 2005 09:00:08 -0500 (EST) "John Madden" <[EMAIL PROTECTED]> wrote:
> The disks are quite fast. bonnie++, for example, shows writes at over > 300MB/s. > What I'm finding though is that the processes aren't ever pegging them out -- > nothing ever goes into iowait. The bottleneck is elsewhere... It's situations like this Dtrace was made for. But on linux we still have to use some 'gut feeling' to figure it out ... So you say you have fast disks for bonnie, but still see slow imap copy operations? What kind of SAN exactly do you have attached? Because fsync() calls would still be my primary suspect here ... You say you're copying mail spool from one box to another via imap. Is the source box able to provide mails at a fast enough rate? -- Jure Pečar http://jure.pecar.org/ ---- Cyrus Home Page: http://asg.web.cmu.edu/cyrus Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
