On Fri, Mar 19, 2021 at 2:25 AM Yunsheng Lin <linyunsheng@xxxxxxxxxx> wrote: > I had done some performance test to see if there is value to > fix the packet stuck problem and support lockless qdisc bypass, > here is some result using pktgen in 'queue_xmit' mode on a dummy > device as Paolo Abeni had done in [1], and using pfifo_fast qdisc: > > threads vanilla locked-qdisc vanilla+this_patch > 1 2.6Mpps 2.9Mpps 2.5Mpps > 2 3.9Mpps 4.8Mpps 3.6Mpps > 4 5.6Mpps 3.0Mpps 4.7Mpps > 8 2.7Mpps 1.6Mpps 2.8Mpps > 16 2.2Mpps 1.3Mpps 2.3Mpps > > locked-qdisc: test by removing the "TCQ_F_NOLOCK | TCQ_F_CPUSTATS". I read this as this patch introduces somehow a performance regression for -net, as the lockless bypass patch you submitted is for -net-next. Thanks.
