Hi Patrick, hi all, Dario B. Bestetti (OpServices) a écrit : > > > ----- "Patrick Morris" <patrick.mor...@hp.com> escreveu: > >> shadih rahman wrote: >> > List, >> > Is there any information as to what is the maximum number of >> > services one can run on a single box with single instance of Nagios? >> >> > I did not find any concrete data on this. >> > >> > I am running a single instance of nagios on a quad core 2.5 GHZ >> > machine with with 4 Gigs of RAM. >> > >> > I have total of 7359 service check running on this box. I have also >> >> > ndoutils running on the same box as backend. >> > >> > My total service checks is going to five fold very soon with a lot >> of >> > nrpe checks. >> > >> > Now, my question is should I run multiple instance of nagios on the >> >> > same box or a single instance will be able to handle about 30000 >> > service checks? >> >> In my experience, you'll run into issues right around 8,000 checks or >> >> so, depending no output verbosity, on a fairly stock setup. This is >> due >> to the size of the pipe used to temporarily store check results, at >> least on Linux (and you may be seeing it already with your number of >> checks). Around that point, even with quite a bit of tuning, the check >> >> results will fill the pipe in less than a second, which is the minimum >> >> amount of time I've been able to configure Nagios to flush it. When >> that >> happens, latencies go through the roof. >> >> Distributing the checks doesn't solve the problem if you're still >> sending the results to a centralized Nagios instance, since one >> machine >> still needs to process all of them. >> >> I'm working through this situation now, and it's looking like it may >> take a custom kernel with a larger pipe size to handle >> it. >> >> > Shadih, we have a customer running over 20.000 service checks in a single > box. > > The box is 2x Intel Dual-core Xeon 3Ghz with 8Gb RAM. The latency is > around 0.7s. The checks are performed between 3min and 5min. They have > around 40 simultaneous users. > > _________________________________________________ > Dario B. Bestetti OpServices
I had to install a bunch of nagios for 400000 polls. We ran some tests on bi-Xeon Dual-Core with 4Go. It seems the limit of Nagios 3 is around 25000 services by server, but we didn't use the interface and the recording to database is with Perl scripts of our own. Taking 20000 services as a limit seem to be the right thing to do, perhaps less as 15000 with NDO. Regards, -- David Dumortier LINAGORA Service Management Monitoring ------------------------------------------------------------------------------ Return on Information: Google Enterprise Search pays you back Get the facts. http://p.sf.net/sfu/google-dev2dev _______________________________________________ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null