On 03/01/2013 07:50 AM, Peter Lieven wrote: > just a quick test on my desktop: > > ~/git/qemu$ x86_64-softmmu/qemu-system-x86_64 -k de -enable-kvm -m 1024 > -drive > if=virtio,file=iscsi://172.21.200.31/iqn.2001-05.com.equallogic:0-8a0906-16470e107-713001aa6de511e0-001-test/0 > -vnc :1 -boot dc -monitor stdio > > using ubuntu 12.04.1 desktop and the example from docs/xbzrle.txt
Thanks. Reformatting a bit: > > a) with the patch designated with '+' > b) without the patch designated with '-' + total time: 22185 milliseconds - total time: 22410 milliseconds Shaved 0.3 seconds, better than 1%! + downtime: 29 milliseconds - downtime: 21 milliseconds Not sure why downtime seemed worse, but probably not the end of the world. + transferred ram: 706034 kbytes - transferred ram: 721318 kbytes Fewer bytes sent - good. + remaining ram: 0 kbytes - remaining ram: 0 kbytes + total ram: 1057216 kbytes - total ram: 1057216 kbytes + duplicate: 108556 pages - duplicate: 105553 pages + normal: 175146 pages - normal: 179589 pages + normal bytes: 700584 kbytes - normal bytes: 718356 kbytes Fewer normal bytes... + cache size: 67108864 bytes - cache size: 67108864 bytes + xbzrle transferred: 3127 kbytes - xbzrle transferred: 630 kbytes ...and more compressed pages sent - good. + xbzrle pages: 117811 pages - xbzrle pages: 21527 pages + xbzrle cache miss: 18750 - xbzrle cache miss: 179589 And very good improvement on the cache miss rate. + xbzrle overflow : 0 - xbzrle overflow : 0 Thanks, this proves it's a good patch. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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