On Sun, Mar 6, 2011 at 10:25 PM, Mathias Klette <mkle...@gmail.com> wrote: > I've tested with iozone to compare IO with a linux guest and also to > verify changes made to improve situation - but nothing really helped. > > TESTS with "iozone -s 4G -r 256k -c -e":
Please use the -I option to bypass the page cache, otherwise buffered I/O will be used and requests may be satisfied from memory rather than actually accessing the disk. What is the qemu-kvm command-line (ps aux | grep kvm)? Are you using virtio-blk and the Windows guest drivers from here: http://www.linux-kvm.org/page/WindowsGuestDrivers/Download_Drivers Stefan -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
