On Apr 7, 2011, at 5:49 PM, Andrew Klaassen wrote: > --- On Thu, 4/7/11, Andrew Klaassen <clawsoon@xxxxxxxxx> wrote: > >> I do notice that ksoftirqd is eating up 100% of a core when >> I'm loading the server heavily. I assume that's >> because I'm not using jumbo frames and the ethernet cards >> are spitting out interrupts as fast as they're able. > > I just got myself edjumicated on smp_affinity, and now I'm able to achieve 99% CPU usage by 8 nfsd processes on 8 cores on a read-only, fully-cached workload, with ksoftirqd processes only using 1% CPU per core. > > Unfortunately, this doesn't help the "ls -l" speed. Serving NFS files is generally not CPU intensive. The problem may be lock contention on the server, but that's about as far as my expertise goes. -- Chuck Lever chuck[dot]lever[at]oracle[dot]com -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
