Host: 2.6.27-gentoo-r8 AMD Opteron 2378 Guest: Windows XP SP2 when running with a raw disk image as a file or a raw disk image on an lvm vg, I'm getting very low performance on write (5-10 MB/s) however when using qcow2 format disk image the write speed is much better (~30MB/s), which is consistant with a very similar setup running kvm-68. Unfortunately when running the test with qcow2 the system becomes unresponsive for a brief time during the test. kvm -localtime -m 1024 -drive file=<diskimage>,boot=on where diskimage is either the qcow2 format image, or the path to the lv The host is running raid5 and drbd (drive replication software), however performance on the host is performaning well and avoiding the drbd layer in the guest does not improve performance, but running on qcow2 does. Any thoughts/suggestions of what could be wrong or what to do to fix this? -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
