On Mon, 15 Dec 2003, Shachar Shemesh wrote:
> b. Occasionally, I get a system thatresponds "slow", but aside from a
> high load average, there seems to be nothing wrong with it. CPU is idle
> most of the time, etc. Any ideas how I can find out what and why is
> going on?
I'd look for:
- I/O bound processes
- Inefficient scheduling by the kernel - this is something, which might
have been screwed up by kernel patches, as I understand that there was a
lot of development work in the kernel scheduler.
- Resources, which have been reserved for much longer time than necessary
(and hence blocking processes which are waiting for them).
Tools? The only relevant tool I know about is vmstat. Suggestions for
other tools are very welcome.
--- Omer
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