Re: [libvirt] qemu-kvm networking speed
When I run iperf according to 'top' my CPU % does not even go above 2%.
'virt-manager' CPU usage did not go above 25%.
Thoughts?
Bryan
Daniel Veillard <veillard(a)redhat.com>
03/12/2009 04:28 PM
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Re: [libvirt] qemu-kvm networking speed
On Thu, Mar 12, 2009 at 04:18:27PM -0400, Bryan_Coleman(a)dart.biz wrote:
Thank you for the suggestion. Switching to virtio and/or e1000
helped
but
still was not able to exceed 450Mb/s. It took me awhile to figure
out
you
had to either restart or reload libvirtd for the changes to take
effect.
Is there anything else I could check/change to approach 1000Mb/s or
higher?
I don't think any of the hardware emulation layer can be faster than
virtio, that would be very surprizing. Seems you're approaching the
limit of the capacity of the machine, I would not be surprized if you
were CPU bound at that point. There is probably tuning possibilities
but that also probably depend on other factors than just libvirt
or QEmu itself.
Daniel
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