hi
You could probably get away with just copying the hobbitd/hobbitd_rrd
and web/hobbitsvc.cgi binaries from this version on top of your current
setup, but I cannot say for certain that it will work.
you have to update hobbitgraph.cgi too. It's seems to work fine.
148795 rrd files
8000 devices
ha with drbd
load 7 without this hack. 1.47 now
i/o wait 50% ithout this hack. 0% now
Henrik you rox !
oau
----- Mail Original -----
De: "Henrik \"Størner\"" <user-ce4a2c883f75@xymon.invalid>
À: user-ae9b8668bcde@xymon.invalid
Envoyé: Mercredi 4 Novembre 2009 11h21:51 GMT +01:00 Amsterdam / Berlin / Berne / Rome / Stockholm / Vienne
Objet: Re: [hobbit] Optimizing Xymon disk performance
In <user-9dd7056a7a3a@xymon.invalid> Iain M Conochie <user-c784e16a5170@xymon.invalid> writes:
Henrik St�rner wrote:
<snip>
The standard 4.3.0 beta adds caching of RRD file updates, and this has a
significant impact on the I/O load of the server - essentially, it means
that hobbitd_rrd caches up to 12 updates (= 1 hour) before it does an
actual update of the RRD file. Since the amount of disk I/O is almost
identical whether you're doing one data update or 50, this caching
eliminates about 90% of your disk I/O on the RRD files. So that would be
the simplest solution to implement.
I am running 4.3.0-0.20080103 so quite an out of date version. However I
would be interested in learning this. Would I have to upgrade my hobbit
/ xymon installation to get this feature? What version contains it? How
do I enable it?
I would really recommend upgrading to the current software in the
Subversion tree
http://hobbitmon.svn.sourceforge.net/viewvc/hobbitmon/branches/4.3.0/
and just install that.
You could probably get away with just copying the hobbitd/hobbitd_rrd
and web/hobbitsvc.cgi binaries from this version on top of your current
setup, but I cannot say for certain that it will work.
Regards,
Henrik