xming wrote: >> Most likely the guest's rx queue length is greater than the host's. You >> might try >> >> ifconfig vnet0 txqueuelen 1500 >> >> (and so on for every interface) >> >> >> or perhaps reducing the guests' txqueuelen. >> > > I have the same issue (overruns) and I have stalled network (in my other > report I can only unstall the network by putting the NIC in promisc back > and forth). > > The txqueuelen is indeed greater in the guest then the tap on the host, > and I also notice that it's almost ways the output NIc which get stuck. > > So changing the tap (on the host) to 1500, I can't not reproduce the hang yet > and a ping -f -s 64000 (between guests) does not produce any packet loss. > > 27810 packets transmitted, 27809 received, 0% packet loss, time 259080ms > rtt min/avg/max/mdev = 5.013/7.639/33.999/1.536 ms, pipe 3, ipg/ewma > 9.316/7.284 ms > > I hope this is the solution for my network stalls and packet loss in games. >
It's not a fix, rather a workaround. Hopefully some networking guru will come up with a real fix. What NIC model are you using in the guest? -- Do not meddle in the internals of kernels, for they are subtle and quick to panic. -- 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
