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