On Mon, Jul 16, 2007 at 09:55:15AM +0200, Tadeas Mengler wrote: > Hello > > I have Xen related issues. I try to describe it as best as I can. > While transmitting large amounts of data from domU the IO load > increases greatly, thus making the domU unusable. The load is > significant even on dom0. The performance of cpus and hard drives is > not an issue. We have this problem on all servers with diferent hw > configurations. Please do you know the reason of this behaviour, do you > have any experience whith such problems? > Nope, no such experience with many xen hosts. How do you measure this "IO load" ? What effects does it have? What kind of hardware do you have (cpu/mem/nic/disk or raid controller/disks)? Are you running centos5? latest updates installed? -- Pasi