[K12OSN] one year performance graphs and statistics for two server setups we use

Nadav Kavalerchik nadavkav at gmail.com
Sun Jun 22 05:15:00 UTC 2008

wow :-) that helped me allot, thanks !
i will look into it and see if i can add these probes to Cacti, if not... i
will checkout opennms. (it looks very professional from the looks of it in
their website)

super thanks,
nadav :-)

On Sat, Jun 21, 2008 at 10:59 PM, Les Mikesell <lesmikesell at gmail.com>

> Nadav Kavalerchik wrote:
>> Cacti already monitor SNMP. i was looking for the exact SNMP strings you
>> might think help me monitor router's bottle-necks , NIC's IO buttle-necks,
>> cpu wait for IO, squid wait for...
>> (actually, i monitor some hardware with SNMP. but i did not include it in
>> the report.)
> Cacti is easier to set up, but opennms is more comprehensive and does more
> by default.  It will have default graphs for CPU use that color-code the
> user/system/wait times.  I don't think there is anything specific for NIC
> buffers but it will graph interface errors, total current connections, and
> connections being opened in in/out bound directions as well as interface
> bandwidth.  And it can notify you via email, sms, a jabber chat room, etc.
> when something goes wrong.
> But there's probably only a few things that matter - one will be total
> outbound bandwidth for screen-intensive things, another will be CPU use for
> things like flash that all run on the server CPU.  These are easy to see
> even with cacti.  Another is disk head contention where multiple
> users/processes all are waiting for something in different locations on the
> same disk.  That one is harder to diagnose - and likely the most common
> bottleneck.
> --
>  Les Mikesell
>   lesmikesell at gmail.com
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