On 02/02/2012 07:15 PM, Mulyadi Santosa wrote:
On Thu, Feb 2, 2012 at 17:20, Matthias Brugger <matthias.bgg@googlemail.com> wrote:
Hi all,
I'm trying to analize I/O behavior of Qemu on the host.
what is your complete command to invoke Qemu?
qemu -hda scheduler.raw -drive file=/mnt/disk/testdisk2.img,if=virtio,cache=none -m 1024 -enable-kvm -k es -smp 2 -vnc 127.0.0.1:10 -smb /home/matthias/nfs/
sometimes Qemu's I/O behaviour can be modified by certain parameter. All I know recent Qemu release (>= 1.x) use iothread by default, which might explain your 4 threads reads.
I use qemu-0.15.1 configured with the following parameter: ./configure --disable-xen --enable-kvm --enable-io-thread --enable-vnc-thread --disable-darwin-user --disable-bsd-user --target-list=i386-softmmu -- --- http://motzblog.wordpress.com/