> > I got a huge performance boost when I moved the dynamips directory to > > a reasonably fast disk subsystem. > > uh, why was this? Surely you weren't paging your inbound packets to disk > before forwarding them? Or was this purely for startup / shutdown?
I never investigated it very far, but I think dynamips puts router memory onto disk. Maintaining the myriad timers in a large OSPF LSA database might be a lot of memory i/o? I also happened to be using a particularly low-performing disk subsystem*, so maybe I ran into something that doesn't matter in most implementations. When I changed the dynamips filesystem it quadrupled the size of the topology I could run. /chris * ext3 filesystem on a virtual (xen) block device in a file in a zfs filesystem on a raidz2 disk pool. _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
