[c-nsp] Re: RTG

Suchy Daniel ds at nix.cz
Thu Feb 23 10:49:51 EST 2006


Latest stable release (0.7.4), pooling 64bit counters at 15sec interval.

I purge ~3 days old data from databases (for long-time monitoring I use 
mrtg, RTG is for operational monitoring, where mrtg is too slow).

Dan

Marko Milivojevic wrote:
> 
> What version of the poller/grapher and discovery mechanism do you use?
> 
> Marko.
> 
> Suchy Daniel wrote:
> 
>> I'm using RTG i.a. for monitoring 10Gig interfaces (with ~4G peak 
>> traffic today) without any problems.
>>
>>>     Speaking of RTG, could someone point me to a working combination 
>>> of RTG poller and RTG grapher that can actually work with interfaces 
>>> faster than 2.5 Gb/s :-(.
>>>
>>> Marko.
>>>
>>> Jon Dustin wrote:
>>>
>>>> RTG may not be very polished, but is the only serious contender I have
>>>> found to specifically address the performance issue. The poller is
>>>> written in C, with a MySQL client built-in for speedy inserts. The
>>>> schema has also been designed for speed, rather than simplicity (three
>>>> tables for each device - InOctets, OutOctets, Errors).
>>>> BUT - All this attention to speed gives some flexibility in deployment,
>>>> as you may split apart the polling, graphing, and storage functions if
>>>> you wish. And the graphing function only takes CPU cycles when someone
>>>> wants to view (rather than Cacti/MRTG that constantly generate graphs).
>>>>
>>>> We run RTG with a 5-minute poll cycle for over 300 devices and around
>>>> 11000 ports. The entire poll cycle takes about 30 seconds, and is
>>>> running on a Xeon 2.8GHz cpu with lots of other tasks to do.
>>>>
>>>> http://rtg.sourceforge.net
>>>>
>>>> Message: 7
>>>> Date: Thu, 23 Feb 2006 09:47:18 -0500 (EST)
>>>> From: Dave Temkin <dave at ordinaryworld.com>
>>>> Subject: RE: [c-nsp] Monitoring GUI for Cisco network
>>>> To: Chris Hale <chris-lists at pipelinewireless.us>
>>>> Cc: cisco-nsp at puck.nether.net Message-ID: 
>>>> <Pine.LNX.4.58.0602230946590.2534 at ordinaryworld.com>
>>>> Content-Type: TEXT/PLAIN; charset=US-ASCII
>>>>
>>>>> From looking at this it looks like it would take some serious
>>>>
>>>> customization to get it to do anything other than 5 minutes, or am I
>>>> missing something?
>>>>
>>>> -Dave
>>>>
>>>> On Wed, 22 Feb 2006, Chris Hale wrote:
>>>>
>>>>
>>>>> OpenNMS can do this at whatever intervals you want.  It becomes a
>>>>
>>>>
>>>> matter of
>>>>
>>>>> disk i/o and CPU if you want to poll a large network in a very short
>>>>
>>>>
>>>> amount
>>>>
>>>>> of time.
>>>>>
>>>>> We use it to poll our core devices every minute, graph every 5, and
>>>>> poll/graph standard nodes every 5 minutes.
>>>>>
>>>>> It also is our Syslog/trap server, notification/paging system, etc.
>>>>>
>>>>> Chris
>>>>>
>>>>
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