Hi, > > Is anyone experiencing same network slowdown? > > Or could it be just some configuration issue on my side? > > What do you get on the same hardware running a non-Xen kernel? What > does the test look like? You also have to consider that Ethernet is not > 100% efficient. The same hw without Xen can handle several 1Gbps (tested with 2) simultaneous streams (doesn't matter whether in- or out-going). I think this is really Xen (vif-eth) speed issue which may or may not be possible to optimize, as there is really a lot of additional packet copying in the dom0 (and also domU is applicable). So my question is more like - is there anyone who can get 1Gbps throuput on domU (or Dom0) eth0 under Xen? Or do I have to assign the network card HW directly to the dom0/domU where I need full network speed? Thanks, david.kostal at gmail.com ----+