From: Davide Caratti <dcara...@redhat.com> Date: Thu, 13 Sep 2018 19:29:11 +0200
> the data path of 'police' action can be faster if we avoid using spinlocks: > - patch 1 converts act_police to use per-cpu counters > - patch 2 lets act_police use RCU to access its configuration data. > > test procedure (using pktgen from https://github.com/netoptimizer): > # ip link add name eth1 type dummy > # ip link set dev eth1 up > # tc qdisc add dev eth1 clsact > # tc filter add dev eth1 egress matchall action police \ > > rate 2gbit burst 100k conform-exceed pass/pass index 100 > # for c in 1 2 4; do > > ./pktgen_bench_xmit_mode_queue_xmit.sh -v -s 64 -t $c -n 5000000 -i eth1 > > done > > test results (avg. pps/thread): > > $c | before patch | after patch | improvement > ----+--------------+--------------+------------- > 1 | 3518448 | 3591240 | irrelevant > 2 | 3070065 | 3383393 | 10% > 4 | 1540969 | 3238385 | 110% Series applied.
