From: David Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
To: cascardo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org
Cc: dev-yBygre7rU0TnMu66kgdUjQ@public.gmane.org,
netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
eric.dumazet-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
Subject: Re: [PATCH v2 2/2] openvswitch: use percpu flow stats
Date: Sun, 18 Sep 2016 22:14:22 -0400 (EDT) [thread overview]
Message-ID: <20160918.221422.792448980235933369.davem@davemloft.net> (raw)
In-Reply-To: <1473977513-7617-2-git-send-email-cascardo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
From: Thadeu Lima de Souza Cascardo <cascardo@redhat.com>
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 <cascardo@redhat.com>
Also applied to net-next, thanks.
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next prev parent reply other threads:[~2016-09-19 2:14 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-15 22:11 [PATCH v2 1/2] openvswitch: fix flow stats accounting when node 0 is not possible Thadeu Lima de Souza Cascardo
2016-09-15 22:11 ` [PATCH v2 2/2] openvswitch: use percpu flow stats Thadeu Lima de Souza Cascardo
2016-09-15 23:09 ` Eric Dumazet
[not found] ` <1473980966.22679.58.camel-XN9IlZ5yJG9HTL0Zs8A6p+yfmBU6pStAUsxypvmhUTTZJqsBc5GL+g@public.gmane.org>
2016-09-15 23:36 ` Thadeu Lima de Souza Cascardo
[not found] ` <1473977513-7617-2-git-send-email-cascardo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-09-18 2:07 ` pravin shelar
2016-09-19 2:14 ` David Miller [this message]
[not found] ` <1473977513-7617-1-git-send-email-cascardo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-09-18 2:06 ` [PATCH v2 1/2] openvswitch: fix flow stats accounting when node 0 is not possible pravin shelar
2016-09-19 2:14 ` David Miller
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