Did you set each ksoftirqd to a specific cpu? Wayne > -----Original Message----- > From: linux-nfs-owner@xxxxxxxxxxxxxxx > [mailto:linux-nfs-owner@xxxxxxxxxxxxxxx] On Behalf Of Andrew Klaassen > Sent: Thursday, April 07, 2011 4:50 PM > To: Chuck Lever > Cc: Benny Halevy; Jim Rees; Garth Gibson; linux-nfs@xxxxxxxxxxxxxxx > Subject: Re: Prioritizing readdirplus/getattr/lookup > > --- 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. > > Andrew > > > -- > 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 > -- 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
