On Mon, Jul 22, 2002 at 08:38:58PM -0700, william@elan.net wrote:
Is there patch or special config example available that would allow me to use mrtg (or rather rrdtool) to measure more often and then graph it in a way that would show standard 5-min graph but also separate line showing those micro burst and actual peak usage?
It's usually not practical to sample data that often, at least over snmp. 30 seconds is reasonable if your poller doesn't suck (aka not mrtg), but thats still a fair amount of averaging. As an example, looking at an interface doing 135Mbps average on a pretty steady curve through Juniper's "monitor interface" which gives 2 second samples, I see between 120Mbps and 150Mbps fluctuations almost constantly. Personally I would like to see the data collection done on the router itself where it is simple to collect data very frequently, then pushed out. This is particularly important when you are doing things like billing 95th percentile, where a loss of connectivity between the polling machine and the device is a loss of billing information. Why Juniper won't spend 5 minutes to make a simple lib so a program could sample interface counters, so someone could write this kind of system to run on the RE, is beyond me. I blame generations of dumbed down network engineers wielding perl as their only tool. :) -- 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)