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From: Torsten =?iso-8859-1?q?F=F6rtsch?= <torsten.foertsch@gmx.net>
Subject: Re: [Qemu-devel] [FYI] memory leak in 0.14.0rc1 ?
Date: Tue, 15 Feb 2011 18:20:10 +0100
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To: qemu-devel@nongnu.org
Cc: Stefan Hajnoczi <stefanha@gmail.com>

On Tuesday, February 15, 2011 15:43:32 Stefan Hajnoczi wrote:
> > I have installed winxp and run the machine as "/usr/bin/qemu-kvm -name
> > xp.home -m 768 ...".
>=20
> Are you able to try QEMU 0.14.0-rc2 from source?
>=20
> $ git clone git://git.qemu.org/qemu.git
> $ git checkout v0.14.0-rc2
> $ ./configure --target-list=3Dx86_64-softmmu --enable-io-thread
> --disable-strip --prefix=3D/usr
> $ make
> $ x86_64-softmmu/qemu-system-x86_64 -enable-kvm -m 768 -name xp.home ...

Now, the process size stays around 1300 Mb and RSS is very constant at 794 =
Mb.

But the VM is much slower. Although, according to "info kvm" kvm is enabled.

What options do I have to use to get optimal performance?

> Also, please post your full KVM command-line so we know what devices
> and features you have enabled.

x86_64-softmmu/qemu-system-x86_64 \
  -name xp.home -boot order=3Ddc \
  -drive file=3D/.../xp.home/root.raw,if=3Dvirtio \
  -drive file=3D/.../config.cpio,if=3Dfloppy,index=3D1 \
  -m 768 \
  -usb \
  -rtc base=3Dutc,clock=3Dhost \
  -vga std \
  -cpu host \
  -smp 2 \
  -enable-kvm \
  -balloon virtio \
  -vnc 127.0.0.1:15 \
  -monitor unix:/.../xp.home/.monitor,server,nowait \
  -serial unix:/.../xp.home/.ttyS0,server,nowait \
  -net nic,vlan=3D0,model=3Dvirtio,macaddr=3DE0:23:DA:00:00:05 \
  -net tap,vlan=3D0,name=3Dext,ifname=3Dqe5,script=3D/.../qemu-ifup,downscr=
ipt=3D/.../qemu-ifdown \
  -net nic,vlan=3D1,model=3Dvirtio,macaddr=3DF0:23:DA:00:00:05 \
  -net tap,vlan=3D1,name=3Dint,ifname=3Dqi5,script=3D/.../qemu-ifup,downscr=
ipt=3D/.../qemu-ifdown \
  -rtc base=3Dlocaltime \
  -usbdevice tablet

In the original command there was another option "boot=3Don" on the 1st dri=
ve.
And, the -daemonize option was given.

BTW, the monitor still says it's QEMU 0.13.92, not 0.14.

Torsten F=F6rtsch