On Thu, 2008-10-30 at 14:20 -0500, Anthony Liguori wrote: > Mark McLoughlin wrote:
> > | guest->host tput | > > host->guest tput > > netperf, 10x20s runs (Gb/s) | min/ mean/ max/stddev | min/ > > mean/ max/stddev > > > > ------------------------------+----------------------------+--------------------------- > > kvm-userspace.git, 1k | 0.600/ 0.645/ 0.670/ 0.025 | 5.170/ > > 5.285/ 5.470/ 0.087 > > kvm-userspace.git, 16k | 3.070/ 3.350/ 3.710/ 0.248 | 5.950/ > > 6.374/ 6.760/ 0.261 > > kvm-userspace.git, 65k | 4.950/ 6.041/ 7.170/ 0.639 | 5.480/ > > 5.642/ 5.810/ 0.092 > > > > no tx timer, 1k | 0.720/ 0.790/ 0.850/ 0.040 | 4.950/ > > 5.172/ 5.370/ 0.128 > > no tx timer, 16k | 4.120/ 4.512/ 4.740/ 0.190 | 4.900/ > > 5.480/ 6.230/ 0.416 > > no tx timer, 65k | 5.510/ 7.702/ 9.600/ 1.153 | 4.490/ > > 5.208/ 5.690/ 0.408 > > > > Okay, I don't see 3/6 yet, but does no tx timer mean just no tx timer or > no tx timer + handling IO in the IO thread? The latter. Removing the tx timer and doing all the tx I/O in the vcpu thread gives poor results because you basically just exit the guest and wait for the send to complete for each individual packet. Cheers, Mark. -- 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
