I''m having performance problems when accessing certain web sites from a DomU machine. After a bit of digging, I noticed that mtr[1] was showing packet loss at virtually every hop from the DomU machine, but none when run on the Dom0 machine, tracing to the same destination. It seems that they''re being dropped as they hit the vifX.Y interface in Dom0: springfield:~# netstat -i Kernel Interface table Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg eth0 1500 0 379875 0 0 0 2676 0 0 0 BMRU eth1 1500 0 18152761 0 0 0 15507998 35 0 0 BMRU lo 16436 0 1545 0 0 0 1545 0 0 0 LRU peth0 1500 0 99293632 0 0 0 82455003 0 0 0 BORU vif0.0 1500 0 2676 0 0 0 379875 0 0 0 BORU vif2.0 1500 0 8167576 0 0 0 10080429 0 58 0 BORU vif3.0 1500 0 78502165 0 0 0 91983028 0 316747 0 BORU vif4.0 1500 0 674403 0 0 0 1192724 0 478 0 BORU vif5.0 1500 0 4097341 0 0 0 6305952 0 884 0 BORU xenbr0 1500 0 374121 0 0 0 0 0 0 0 BORU vif3.0 is my busiest DomU, and as you can see, there are an abnormally high number of dropped packets. Plotting a graph of them, they''r ebeing dropped consistently over a long period of time, and aren''t confined to DomU startup, or any other abnormal conditions that I can see. Any ideas on what might be going on, and what I can do to fix it? I''m using Xen-3.0.3 on amd64 Linux. Thanks, Tet [1] http://www.bitwizard.nl/mtr/ _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users