On Mon, Jun 25, 2012 at 05:16:48PM +0800, Jason Wang wrote:

Hello All:

This series is an update version of multiqueue virtio-net driver based on
Krishna Kumar's work to let virtio-net use multiple rx/tx queues to do the
packets reception and transmission. Please review and comments.

Test Environment:
- Intel(R) Xeon(R) CPU E5620 @ 2.40GHz, 8 cores 2 numa nodes
- Two directed connected 82599

Test Summary:

- Highlights: huge improvements on TCP_RR test
- Lowlights: regression on small packet transmission, higher cpu utilization
             than single queue, need further optimization

Didn't review yet, reacting this this paragraph:

To avoid regressions, it seems reasonable to make
the device use a single queue by default for now.
Add a way to switch multiqueue on/off using ethtool.

This way guest admin can tune the device for the
workload manually until we manage to imlement some
self-tuning heuristics.

-- 
MST