Messages in this thread | | | Date | Mon, 25 Jun 2012 13:07:58 +0300 | From | "Michael S. Tsirkin" <> | Subject | Re: [net-next RFC V4 PATCH 0/4] Multiqueue virtio-net |
| |
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
| |