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| author |   David S. Miller <davem@davemloft.net> | 2018-09-16 15:30:23 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-09-16 15:30:23 -0700 |
| commit | 50676de486791afa7ce6f90e31d9951f3d4b04d5 (patch) | |
| tree | 65206253194882b4ccb9a7b83aff2ebc4b1e883c /drivers | |
| parent | cxgb4: update supported DCB version (diff) | |
| parent | net/sched: act_police: don't use spinlock in the data path (diff) | |
| download | linux-dev-50676de486791afa7ce6f90e31d9951f3d4b04d5.tar.xz linux-dev-50676de486791afa7ce6f90e31d9951f3d4b04d5.zip | |
Merge branch 'act_police-lockless-data-path'
Davide Caratti says:
====================
net/sched: act_police: lockless data path
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%
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions