[Xymon] xymon client resource usage

[Ralph Mitchell]

On Mon, Oct 10, 2011 at 7:54 PM, Japheth Cleaver <cleaver at terabithia.org>wrote:

> On 10/10/2011 12:10 PM, T.J. Yang wrote:
>
>> Hi, All
>>
>> This is a question we got asked a lot when trying to deploy a
>> xymon/hobbit client onto a production system.
>>
>> How much system resource(cpu/memory) will xymon/hobbit client consumes ?
>>
>> Any one has a script or C program on doing this measurement ?
>>
>> Procedure:
>>
>> 1. Deploy xymon client
>> 2. Run this program for 3 days.
>> 3. Here is the report of xymon cpu/memory usage for past 3 days.
>>
>> I am interested to tackle this task but hopefully some one already did
>> this work and willing to share.
>>
>> Regards
>>
>> tj
>>
>
> I ran this at $currentjob-- and the load was literally indistinguishable.
> We even ran rotating :30s sadc collectors, fired off in 1m increments (to
> get high-detail last-5-minute metrics in the client reports for analysis in
> status-change logs) and noticed no change whatsoever in non-broken boxes.
>
> If things like 'df' and 'top' cause appreciable load, the box is probably
> already in bad shape.
>
> If you want to reduce generic impact even further, think about things like
> having /dev/shm/ as your BBTMP (on linux), or firing xymonclient.sh off via
> SSH call or cron as an existing user (no xymonlaunch = 1 less daemon).
>

I use cron for most clients.  I just had to put a couple of environment
variables in at the top, for BBHOME & BBTMP (I think).  I also cut out the
various compiled binaries and went with curl to post the status message to a
php script on Xymon secure web server.

Ralph Mitchell
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