Re: [PATCH v2] virtio-net: lower min ring num_free for efficiency

2019-08-18 Thread Michael S. Tsirkin
On Thu, Aug 15, 2019 at 09:42:40AM +, ? jiang wrote: > This change lowers ring buffer reclaim threshold from 1/2*queue to budget > for better performance. According to our test with qemu + dpdk, packet > dropping happens when the guest is not able to provide free buffer in > avail ring timely w

Re: [PATCH v2] virtio-net: lower min ring num_free for efficiency

2019-08-15 Thread Jason Wang
On 2019/8/15 下午5:42, ? jiang wrote: This change lowers ring buffer reclaim threshold from 1/2*queue to budget for better performance. According to our test with qemu + dpdk, packet dropping happens when the guest is not able to provide free buffer in avail ring timely with default 1/2*queue. The

[PATCH v2] virtio-net: lower min ring num_free for efficiency

2019-08-15 Thread ? jiang
This change lowers ring buffer reclaim threshold from 1/2*queue to budget for better performance. According to our test with qemu + dpdk, packet dropping happens when the guest is not able to provide free buffer in avail ring timely with default 1/2*queue. The value in the patch has been tested and