cpu usage logging ( sar? )
I have a single cpu server and since a recent upgrade it's becomming intermittently slow.
I want to know if i can find a tool which logs usage, so i can check for periods of e.g. 100% cpu, and identify what exactly is causing the high usage?
Of course it may not just be cpu, so maybe i'll need to log i/o and network too?
Rgds,
Dan
