(Mark cc'd, sound familiar?) * Tom Lendacky (tahm@xxxxxxxxxxxxxxxxxx) wrote: > On Sunday 10 January 2010 06:38:54 am Avi Kivity wrote: > > On 01/10/2010 02:35 PM, Herbert Xu wrote: > > > On Sun, Jan 10, 2010 at 02:30:12PM +0200, Avi Kivity wrote: > > >> This isn't in 2.6.27.y. Herbert, can you send it there? > > > > > > It appears that now that TX is fixed we have a similar problem > > > with RX. Once I figure that one out I'll send them together. > > > > I've been experiencing the network shutdown issue also. I've been running > netperf tests across 10GbE adapters with Qemu 0.12.1.2, RHEL5.4 guests and > 2.6.32 kernel (from kvm.git) guests. I instrumented Qemu to print out some > network statistics. It appears that at some point in the netperf test the > receiving guest ends up having the 10GbE device "receive_disabled" variable in > its VLANClientState structure stuck at 1. From looking at the code it appears > that the virtio-net driver in the guest should cause qemu_flush_queued_packets > in net.c to eventually run and clear the "receive_disabled" variable but it's > not happening. I don't seem to have these issues when I have a lot of debug > settings active in the guest kernel which results in very low/poor network > performance - maybe some kind of race condition? -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
