Ferenc Wágner <[email protected]> wrote:
Jeffrey Westgate <[email protected]> writes:
We use Nagios to monitor, and once every 20 to 40 hours - sometimes
longer, and we cannot set a clock by it - while the machine is 95%
idle (or more according to 'top'), the host load shoots up to 50 or
60%. It takes about 20 minutes to peak, and another 30 to 45 minutes
to come back down to baseline, which is mostly 0.00. (attached
hostload.pdf) This happens to both machines, randomly, and is
concerning, as we'd like to find what's causing it and resolve it.
Try running atop (http://www.atoptool.nl/). It collects and logs
process accounting info, allowing you to step back in time and check
resource usage in the past.
Nice, I didn't know atop could also log the collected data for future
analysis.
If you want to capture even more detail, sysdig is superb:
http://www.sysdig.org/
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