> "Michael S. Tsirkin" <[email protected]> > > On Tue, Oct 26, 2010 at 02:38:53PM +0530, Krishna Kumar2 wrote: > > Results for UDP BW tests (unidirectional, sum across > > 3 iterations, each iteration of 45 seconds, default > > netperf, vhosts bound to cpus 0-3; no other tuning): > > Is binding vhost threads to CPUs really required? > What happens if we let the scheduler do its job?
Nothing drastic, I remember BW% and SD% both improved a bit as a result of binding. I started binding vhost thread after Avi suggested it in response to my v1 patch (he suggested some more that I haven't done), and have been doing only this tuning ever since. This is part of his mail for the tuning: > vhost: > thread #0: CPU0 > thread #1: CPU1 > thread #2: CPU2 > thread #3: CPU3 I simply bound each thread to CPU0-3 instead. Thanks, - KK -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
