On Mon, 15 Jan 2007, Dustin Puryear wrote: > You should, at a minimum, have sysstat (the Linux sar package) > installed on all of your servers and monitor that. Also, do some > remote SNMP performance monitoring to start seeing where your > bottlenecks are. Keep in mind that IO issues may appear as CPU issues > at times.
Good point. And also memory issues may appear as I/O issues (swapping). The right order to track down bottlenecks is: Network->Memory->I/O->CPU. Read the vmstat and iostat man pages, and actually learn what those columns mean. :) What are you guys using for SNMP performance monitoring? We have some homegrown scripts that generate some RRD graphs. The pretty graphs are really good for trend analysis (and the boss likes them haha). > Oh, and finally, do realize that there is a difference between local > performance counters and end-to-end performance testing. An important "Hmmmm...It's really fast from my computer....not sure why it's so slow on your end..." ray -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Ray DeJean http://www.r-a-y.org Systems Engineer Southeastern Louisiana University IBM Certified Specialist AIX Administration, AIX Support =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
