found it: see http://www.cisco.com/en/US/docs/ios/fundamentals/configuration/guide/config_cache.html
On Tue, Jun 10, 2008 at 1:15 PM, Pavel Skovajsa <[EMAIL PROTECTED]> wrote: > Hey, > The reason why show run consumes high cpu is that it polls all IOS > modules/componets to get their configs > I remember there is a command on newest IOS that uses some ram to > cache show run output and speed the show run output process, but I > cannot remember the exact command. > > Pavel > > On Tue, Jun 10, 2008 at 9:36 AM, Saku Ytti <[EMAIL PROTECTED]> wrote: >> 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/ >> > _______________________________________________ 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/
