On 10/17/2012 05:23 PM, Stefan G. Weichinger wrote: > Am 17.10.2012 02:53, schrieb Cole Robinson: > >> Your guest config up thread looked fine AFAICT. But then I've never tried to >> run a kernel-2.2 VM. >> >> The OS type in virt-manager for linux 2.4 vs. generic isn't going to make much >> difference either. >> >> Maybe try switch the CPU model to some older type CPUs pentium2 etc, whatever >> was common around the time of that release. Perhaps also try switch domain >> type="qemu", occasionally kvm can interfere with things. >> >> Barring any of those, I'd try and build a qemu command line by hand that >> reproduces the issue, confirm with latest qemu, and mail qemu-devel about your >> issue. > > Thanks for your suggestions, Cole. > > As you may have read already I was able to solve that issue by enabling > DMA for that virtual IDE-drive. This helped to fix the performance > problems! > Hmm, I didn't see that. Just curious, where was that discussed? And how did you turn on IDE DMA? - Cole