On Wed, Sep 28, 2011 at 01:51:18PM +0100, Richard W.M. Jones wrote: [...] I have pushed this patch, and a further patch to enable SMP in the appliance (optional, default is still UP). Interestingly, enabling more virtual CPUs in the appliance causes a substantial slowdown in lzop performance. The following test:
Real filesystem image ~5.5GB in size, 59% in use. Straight download was 78.74 seconds.
$ ./run ./fish/guestfish --ro -a /dev/vg_pin/F16x64 \ run : time compress-device-out lzop /dev/vg_f16x64/lv_root >(wc -c) elapsed time: 123.17 seconds 2488500746
takes 148 seconds with "qemu-kvm -smp 4". Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into Xen guests. http://et.redhat.com/~rjones/virt-p2v