On 16/02/2015 15:43, Stefan Priebe - Profihost AG wrote: > Hi, > > Am 16.02.2015 um 13:24 schrieb Paolo Bonzini: >> >> >> On 15/02/2015 19:46, Stefan Priebe wrote: >>> >>> while i get a constant random 4k i/o write speed of 20.000 iops with >>> qemu 2.1.0 or 2.1.3. I get jumping speeds with qemu 2.2 (jumping between >>> 500 iops and 15.000 iop/s). >>> >>> If i use virtio instead of virtio-scsi speed is the same between 2.2 and >>> 2.1. >> >> http://wiki.qemu.org/Contribute/ReportABug >> >> What is your command line? > > Could it be that this is a results of compiling qemu with --enable-debug > to get debugging symbols?
Yes. Paolo
