Re: [Qemu-devel] [FYI] memory leak in 0.14.0rc1 ?

[Stefan Hajnoczi]

2011/2/15 Torsten Förtsch <address@hidden>:
> 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 ...".
>>
>> Are you able to try QEMU 0.14.0-rc2 from source?
>>
>> $ git clone git://git.qemu.org/qemu.git
>> $ git checkout v0.14.0-rc2
>> $ ./configure --target-list=x86_64-softmmu --enable-io-thread
>> --disable-strip --prefix=/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.

Thank you for checking this.  This is probably a Suse-specific or
qemu-kvm issue.

> 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?

Is it general sluggishness or do you notice something specific like
disk or networking?  I usually set -drive cache=none which tries to
bypass the host page cache and does not sync to disk after every write
operation.

Stefan