As far as I understand in order to determine HN CPU load produced by
certain CT it is enough to extract 'user', 'system' and 'uptime' values
from /proc/vz/vestat twicely. Then the formula is
ct_cpu_usage=100%*[(user_time_2 + system_time_2) - (user_time_1 +
system_time_1)] / (uptime_2 - uptime_1)
I wonder if the formula above is correct and if it is then if it is
valid for both cases: when cpulimit is set and unset? I guess it should
be valid in both cases.
The second question is if there are any plans to implement HN CPU load
produced by particular CT in some of vz* tools (e.g. in vzcpucheck
providing some additional option and print one more column required info
about HN CPU utilization by each container)?
Regards,
Nikolay.
[email protected] wrote on 13/05/11 16:58:
Tim, thanks a lot for reply and info!
Using all info I have now I will try to write what I need.
Thanks again!
Nikolay.
Tim Small wrote on 13/05/11 16:46:
I can't remember how I derived it, but you might want to take a look at
this munin plugin which I wrote a few months back:
http://exchange.munin-monitoring.org/plugins/openvzcpu/details
Cheers,
Tim.
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