cpu usage / memory usage

[Niels Hamaker]

Hi raghavendra,

the check_mem plugin is a simple and effective plugin to check memory. You 
can find it on nagiosexchange.org.
We generally don't check CPU usage, just load, but it depends on your 
setup, the applications your running, which of the two is the most 
informative. It would be useful to look into that.

Niels


--On February 13, 2007 1:17:04 PM +0530 raghavendra kristam 
<raghavendra.kristam at gmail.com> wrote:

>
> Hi Hugo,
>
> Thanks for the reply.
>
> I need to handle both CPU usage and Memory usage.
>
> i) I think check_load plugin supports cpu usage which provides the load
> information using with: uptime command. If we need cpu usage with vmstat
> command which plugin do I need to use.
>
>
> ii) How to handle memory usage, which plugin do I need to use.
>
> Correct me if am wrong with this understanding.
>
>
> Thanks,
> Raghavendra.
>
>
>
>>> Can some one provide directions how to handle cpu usage / memory
>> usage.
>>> I am using check_disk plugin for disk usage.
>>
>> Assuming you're talking about a unix variant, check_load is included in
>> the standard plugins and can be used to infer cpu usage. There are also
>> quite a few cpu and memory specific plugins available at
>> http://www.nagiosexchange.org .
>
> Correct me if I am wrong but the load on a unix system is not quite
> nescessary related to the CPU usage.
>
> You can get the load info for example with: uptime
>  19:24:23 up 165 days,  1:09,  3 users,  load average: 0.02, 0.02, 0.00
>
> And your CPU usage with: vmstat
> procs -----------memory---------- ---swap-- -----io---- --system--
> ----cpu----
>  r  b   swpd   free   buff  cache   si   so    bi    bo   in    cs us sy
> id wa
>  0  0   1072  67176 184720 792936    0    0     0    76 1138   110  0  0
> 100  0
>
> While there usually is a relation between the two of them they are two
> different things.
>
> The question is which of these two do you (raghavendra kristam) want?
>
> There is a check_load plugin that does the load thing. For most alerting
> purposes that is quite enough. As th load tends to go up if you are low on
> memory.
>
> Hugo.



Met vriendelijke groet,

Niels Hamaker
Support desk

IC&S B.V.
Stadhouderslaan 57
3583 JD UTRECHT
The Netherlands
T: +31 30 6355730
F: +31 30 6355731

http://www.ic-s.nl/

IC&S biedt Service & Support, Development en Consultancy op uiteenlopende 
internet-gerelateerde platformen, met een voorliefde voor Open Source.


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