[email protected] wrote:
> Jeff Frost <[email protected]> schrieb am 16.02.2009 23:06:05:
>
>
>> 2.6.18-xenU #1 SMP Fri Jun 15 17:50:34 PDT 2007 x86_64 Intel(R) Xeon(R)
>> CPU E5345 @ 2.33GHz GenuineIntel GNU/Linux
>>
>
> That your nagios is running inside a virtual machine would have been
> a nice information I guess ;)
> Nagios doesn't perform overly too well inside a VM - actually you
> could say it runs horribly if you pass a certain point of checks
> per minute. The virtual system bus isn't able to cope with the
> throughput then.
>
>
I'd say it runs mostly ok inside this VM, but is having these fork
issues for some reason. The latency is generally good when the fork
issues are not happening (~0.5s), but increase when the forking happens.
> The strange thing is that the error looks like your system is running out
> of low mem,
> but actually that cannot be, since it's x64... could you please post a
> 'cat /proc/meminfo'
> while the error occurs?
>
This is what it looks like:
# cat /proc/meminfo
MemTotal: 4194460 kB
MemFree: 2925748 kB
Buffers: 57500 kB
Cached: 847952 kB
SwapCached: 0 kB
Active: 923368 kB
Inactive: 152540 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 4194460 kB
LowFree: 2925748 kB
SwapTotal: 2097144 kB
SwapFree: 2097144 kB
Dirty: 15552 kB
Writeback: 32 kB
AnonPages: 163296 kB
Mapped: 11348 kB
Slab: 67700 kB
PageTables: 14828 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 5872156 kB
Committed_AS: 2868456 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 2588 kB
VmallocChunk: 34359735519 kB
We increased swap size yesterday after noticing that is was only 512MB
to 2GB and that has helped, but hasn't made the problem go away. Since
then, it only had the forking issues during a 40 minute period overnight
and just recently this morning.
--
Jeff Frost, Owner <[email protected]>
Frost Consulting, LLC http://www.frostconsultingllc.com/
Phone: 916-647-6411 FAX: 916-405-4032
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