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| author | David S. Miller <davem@davemloft.net> | 2018-07-12 23:54:12 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-07-12 23:54:12 +0200 |
| commit | ccb06fba51149e3f0e0f3debcfc270a1e1460f08 (patch) | |
| tree | 29ecf38f5595632596fd00c7f8b47c52e176aed6 /net/ipv4/tcp_timer.c | |
| parent | tcp: use monotonic timestamps for PAWS (diff) | |
| parent | net/sched: act_skbedit: don't use spinlock in the data path (diff) | |
| download | linux-ccb06fba51149e3f0e0f3debcfc270a1e1460f08.tar.xz linux-ccb06fba51149e3f0e0f3debcfc270a1e1460f08.zip | |
Merge branch 'net-sched-act_skbedit-lockless-data-path'
Davide Caratti says:
====================
net/sched: act_skbedit: lockless data path
the data path of act_skbedit can be faster if we avoid using spinlocks:
- patch 1 converts act_skbedit statistics to use per-cpu counters
- patch 2 lets act_skbedit use RCU to read/update its configuration
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 skbedit priority c1a0:c1a0
# 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 | 3917464 ± 3% | 4000458 ± 3% | irrelevant
2 | 3455367 ± 4% | 3953076 ± 1% | +14%
4 | 2496594 ± 2% | 3801123 ± 3% | +52%
v2: rebased on latest net-next
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_timer.c')
0 files changed, 0 insertions, 0 deletions