On Tue, Jul 23, 2002 at 01:56:45AM -0400, Phil Rosenthal wrote:
I don't think RRD is that bad if you are gonna check only every 5 minutes...
RRD doesn't measure anything, it stores and graphs data. The perl pollers everyone is using can barely keep up with 5 minute samples on a couple dozen routers and a few hundred interfaces, requiring "poller farms" to be distributed across a network, 'lest a box or part of the network break and you lose data.
Again, perhaps I'm just missing something, but so lets say you measure 30 seconds late , and it thinks its on time -- So that one sample will be higher , then the next one will be on time, so 30 seconds early for that sample -- it will be lower. On the whole -- it will be accurate enough -- no?
"enough" is a relative term, but sure. :)
I'm not saying a hardware solution can't be better -- but it is likely overkill compared to a few cheap intels running RRD -- assuming your snmpd can deal with the load...
What hardware... storing a few byte counters is trivial, but polling them through snmp is what is hard (never trust a protocol named "simple" or "trivial"). Creating a buffer of samples which can be periodically sampled should be easy and painless. I don't know if I call periodic ftp "painless" but its certainly a start. -- Richard A Steenbergen <ras@e-gerbil.net> http://www.e-gerbil.net/ras PGP Key ID: 0x138EA177 (67 29 D7 BC E8 18 3E DA B2 46 B3 D8 14 36 FE B6)