On (2008-06-09 15:56 -0400), Nick Davey wrote: Hey Nick,
> I've deployed rancid on a fairly large metro network, and am seeing some > pretty high CPU averages. When RANCID runs the CPU's on a large number of > our boxes spike to about 95% for several seconds. Although they have never > hit 100%, or caused any issues (dropped OSPF hello's, stp bpdu's) I'm > concerned that this could happen under the right combination of events this > could result is dropped OSPF neighbor adjacency's or other badness. As other already pointed out, you shouldn't worry there is (sucky) scheduler in IOS that'll make sure that your OSPF/STP etc. keeps rocking while doing lower priority stuff, such as what rancid does. However, if you're running software platform (you prolly aren't, if you have STP) some commands do compete with CEF, such as 'show run' (but not 'show conf' and 'dir'.). And if you have accurate enough monitoring, you can observe slightly increased jitter/latency for few packets transiting eg. VXR when 'show run' or 'dir' is issued. -- ++ytti _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
