From: David Miller <davem@davemloft.net>
To: eric.dumazet@gmail.com
Cc: therbert@google.com, netdev@vger.kernel.org
Subject: Re: [PATCH v5] rfs: Receive Flow Steering
Date: Mon, 19 Apr 2010 13:09:05 -0700 (PDT) [thread overview]
Message-ID: <20100419.130905.210660275.davem@davemloft.net> (raw)
In-Reply-To: <1271520633.16881.4754.camel@edumazet-laptop>
From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Sat, 17 Apr 2010 18:10:33 +0200
> Le vendredi 16 avril 2010 à 23:12 +0200, Eric Dumazet a écrit :
>> My results are on a "tbench 16" on an dual X5570 @ 2.93GHz.
>> (16 logical cpus)
>>
>> No RPS , no RFS : 4448.14 MB/sec
>> RPS : 2298.00 MB/sec (but lot of variation)
>> RFS : 2600 MB/sec
>>
>> Maybe my RFS setup is bad ?
>> (8192 flows)
>>
>
> With attached patch, I reached
>
> Throughput 4465.13 MB/sec 16 procs
>
> RFS better than no RPS/RFS :)
>
> So, the old idea to make rxhash consistent (same value in both
> directions) is a win for some workloads (Consider connection tracking /
> firewalling)
Fun :-) I toyed around with this on my 128 cpu machine (2 NUMA
nodes, 64 cpus each NUMA node).
Vanilla net-next-2.6, no configuration changes:
tbench 64: Throughput 1843.43 MB/sec 64 procs
tbench 128: Throughput 1889.67 MB/sec 128 procs
Vanilla net-next-2.6, rps_cpus="ffffffff,ffffffff,ffffffff,ffffffff"
tbench 64: Throughput 1455.89 MB/sec 64 procs
tbench 128: Throughput 2009.91 MB/sec 128 procs
net-next-2.6 + Eric's port hashing patch, rps_cpus="ffffffff,ffffffff,ffffffff,ffffffff"
tbench 64: Throughput 1593.13 MB/sec 64 procs
tbench 128: Throughput 2367.27 MB/sec 128 procs
next prev parent reply other threads:[~2010-04-19 20:09 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-16 5:47 [PATCH v5] rfs: Receive Flow Steering Tom Herbert
2010-04-16 6:33 ` David Miller
2010-04-16 6:56 ` Eric Dumazet
2010-04-16 7:18 ` Eric Dumazet
2010-04-16 7:26 ` David Miller
2010-04-16 7:48 ` Eric Dumazet
2010-04-17 7:52 ` [PATCH net-next-2.6] rps: rps_sock_flow_table is mostly read Eric Dumazet
2010-04-17 7:57 ` David Miller
2010-04-16 15:35 ` [PATCH v5] rfs: Receive Flow Steering Tom Herbert
2010-04-16 18:15 ` Eric Dumazet
2010-04-16 18:35 ` Tom Herbert
2010-04-16 18:53 ` Eric Dumazet
2010-04-16 20:42 ` Tom Herbert
2010-04-16 21:12 ` Eric Dumazet
2010-04-16 21:25 ` Eric Dumazet
2010-04-17 16:10 ` Eric Dumazet
2010-04-17 17:38 ` Tom Herbert
2010-04-18 0:06 ` Changli Gao
2010-04-18 11:06 ` Franco Fichtner
2010-04-19 20:09 ` David Miller [this message]
2010-04-19 20:23 ` David Miller
2010-04-19 20:32 ` Eric Dumazet
2010-04-19 21:19 ` David Miller
2010-04-26 8:41 ` Eric Dumazet
2010-04-27 21:59 ` David Miller
2010-04-27 22:08 ` Eric Dumazet
2010-04-27 22:10 ` David Miller
2010-04-19 23:38 ` Changli Gao
2010-04-20 5:59 ` Eric Dumazet
2010-04-20 7:56 ` [PATCH net-next-2.6] rps: consistent rxhash Eric Dumazet
2010-04-20 8:18 ` David Miller
2010-04-20 12:48 ` Franco Fichtner
2010-04-20 13:16 ` Eric Dumazet
2010-04-20 14:03 ` Franco Fichtner
2010-04-20 14:57 ` Eric Dumazet
2010-04-20 21:41 ` David Miller
2010-04-20 23:35 ` Changli Gao
2010-04-20 23:38 ` David Miller
2010-04-21 19:12 ` Tom Herbert
2010-04-23 20:44 ` David Miller
2010-05-06 8:06 ` David Miller
2010-05-06 14:45 ` Tom Herbert
2010-04-20 15:09 ` Tom Herbert
2010-04-21 9:29 ` Franco Fichtner
2010-04-21 9:39 ` Eric Dumazet
2010-04-21 11:06 ` Franco Fichtner
2010-04-21 11:16 ` Eric Dumazet
2010-04-20 15:04 ` [PATCH v5] rfs: Receive Flow Steering Tom Herbert
2010-04-20 15:39 ` Eric Dumazet
2010-04-16 19:37 ` Eric Dumazet
2010-04-16 22:49 ` David Miller
2010-04-16 22:53 ` David Miller
2010-04-16 22:57 ` David Miller
2010-04-17 0:22 ` Tom Herbert
2010-04-17 0:58 ` David Miller
2010-04-16 11:57 ` Andi Kleen
2010-04-16 13:32 ` jamal
2010-04-16 13:42 ` Andi Kleen
2010-04-16 14:05 ` jamal
2010-04-16 15:28 ` Andi Kleen
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