I'm sorry, this is not the answer because the system doesn't swap heavily and the memory is ok too. But I think there are some Kernel limits to 255 Procesess... ### <tt>less /usr/src/linux/include/linux/limits.h [...] #define OPEN_MAX 256 /* # open files a process may have */ [...]</tt> ### We will try to fix this in a few days... Thanks <table width=100%> <tr valign=top> <td width=40%>Marco Ramos <mramos@co.sapo.pt> 18.06.2004 13:25 <td width=59%> <table width=100%> <tr> <td> <div align=right>An</div> <td valign=top>h.baecker@ecofis.de <tr> <td> <div align=right>Kopie</div> <td valign=top>nagios-users@lists.sourceforge.net <tr> <td> <div align=right>Thema</div> <td valign=top>Re: [Nagios-users] Perf-Problem - Not more than 255 Childs?</table> <table> <tr valign=top> <td> <td></table> </table> <tt> This should be the answer to your problem: http://www.nagios.org/faqs/viewfaq.php?faq_id=115 HTH, mramos On Fri, 2004-06-18 at 10:15, h.baecker@ecofis.de wrote: > Hi List, > > I have som performance Problems with my Nagios. It is running on an > IBM Server with following specs: > > CPU Info: > 4 x Intel(R) XEON(TM) CPU 2.00GHz > > Mem Info: > total: used: free: > shared: buffers: cached: > Mem: 2649300992 2368167936 281133056 0 > 672956416 949780480 > Swap: 1081470976 48660480 1032810496 > > I think it is not a small system. > > All about we've got 613 Hosts and 2600 Services. > > I would say that 99% of the service checks have an check_interval = > 600 seconds. > > The Process Info says that just 75% of the whole checks where checked > within a 5 minute intervall. > > During my examine of nagios and system I found out that max 255 > procesess owned by nagios with service checks etc. Is there a limit of > maximum procs? > or: > How can I optimize Nagios to check all of the Services within 5 > minutes? Any ideas? > > Thanks for hopefully a much of answers. > > Hendrik </tt>