Re: [PATCH v2 2/2] openvswitch: use percpu flow stats
From: David Miller <hidden>
Date: 2016-09-19 02:14:22
From: Thadeu Lima de Souza Cascardo <redacted> Date: Thu, 15 Sep 2016 19:11:53 -0300
Instead of using flow stats per NUMA node, use it per CPU. When using megaflows, the stats lock can be a bottleneck in scalability. On a E5-2690 12-core system, usual throughput went from ~4Mpps to ~15Mpps when forwarding between two 40GbE ports with a single flow configured on the datapath. This has been tested on a system with possible CPUs 0-7,16-23. After module removal, there were no corruption on the slab cache. Signed-off-by: Thadeu Lima de Souza Cascardo <redacted>
Also applied to net-next, thanks. _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev