Hello: I have a server with 2 HBAs, and the users keeps complaining about performance problems. My question is, how can I relate the process with high I/O wait? Also, is it possible to see how much data is being pushed thru by my 2 HBAs? TIA! -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20070817/01a37bc2/attachment.html>
Mag Gam wrote:> Hello: > > I have a server with 2 HBAs, and the users keeps complaining about > performance problems. My question is, how can I relate the process > with high I/O wait? Also, is it possible to see how much data is being > pushed thru by my 2 HBAs?iostat (part of the sysstat package) will answer your 2nd question. I dunno how to measure io wait time per process. maybe IBM's NMON can do that, not sure, I haven't used it for a while. http://www-941.haw.ibm.com/collaboration/wiki/display/WikiPtype/nmon
Mag Gam wrote:> Hello: > > I have a server with 2 HBAs, and the users keeps complaining about > performance problems. My question is, how can I relate the process with high > I/O wait? Also, is it possible to see how much data is being pushed thru by > my 2 HBAs? >atop http://oldwww.atconsultancy.nl/atop/