netdev - Re: [PATCH] net: Add sendmmsg socket system call

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Date:	Thu, 05 May 2011 11:06:15 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	anton@...ba.org
Cc:	acme@...hat.com, netdev@...r.kernel.org
Subject: Re: [PATCH] net: Add sendmmsg socket system call

From: Anton Blanchard <anton@...ba.org>
Date: Tue, 3 May 2011 16:21:35 +1000

> This patch adds a multiple message send syscall and is the send
> version of the existing recvmmsg syscall. This is heavily
> based on the patch by Arnaldo that added recvmmsg.
> 
> I wrote a microbenchmark to test the performance gains of using
> this new syscall:
> 
> http://ozlabs.org/~anton/junkcode/sendmmsg_test.c
> 
> The test was run on a ppc64 box with a 10 Gbit network card. The
> benchmark can send both UDP and RAW ethernet packets.
...
> We see a 20% improvement in throughput on UDP send and 30%
> on raw socket send.
> 
> Signed-off-by: Anton Blanchard <anton@...ba.org>

Great work, applied, thanks!
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