Re: Workload spikes on KVM host when doing IO on a guest...

2013-04-03 Thread Erik Brakkee
Avi Kivity wrote: On 05/20/2012 08:29 PM, Erik Brakkee wrote: Avi Kivity wrote: On 05/20/2012 08:02 PM, Erik Brakkee wrote: [...] Thanks for this information. Unfortunately, io=native in domain.xml is not supported by opensuse 11.3. It is supported in 12.1 so it appears that the version of

Re: Workload spikes on KVM host when doing IO on a guest...

2012-05-20 Thread Avi Kivity
On 05/20/2012 03:55 AM, Erik Brakkee wrote: Hi, I am seeing high workload spikes of approx. 15 when I do IO inside a KVM guest, for instance dd if=/dev/zero bs=1G count=1 of=hog When I execute a similar command on the host to write a file on the same physical disk, the workload only

Re: Workload spikes on KVM host when doing IO on a guest...

2012-05-20 Thread Avi Kivity
On 05/20/2012 08:29 PM, Erik Brakkee wrote: Avi Kivity wrote: On 05/20/2012 08:02 PM, Erik Brakkee wrote: [...] Thanks for this information. Unfortunately, io=native in domain.xml is not supported by opensuse 11.3. It is supported in 12.1 so it appears that the version of KVM I have on the

Workload spikes on KVM host when doing IO on a guest...

2012-05-19 Thread Erik Brakkee
Hi, I am seeing high workload spikes of approx. 15 when I do IO inside a KVM guest, for instance dd if=/dev/zero bs=1G count=1 of=hog When I execute a similar command on the host to write a file on the same physical disk, the workload only goes to about 3. I am using virtio on the