netdev - Re: SCTP performance?

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Message-ID: <1376090518.20509.14.camel@edumazet-glaptop>
Date:	Fri, 09 Aug 2013 16:21:58 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Ben Greear <greearb@...delatech.com>
Cc:	netdev <netdev@...r.kernel.org>
Subject: Re: SCTP performance?

On Fri, 2013-08-09 at 16:11 -0700, Ben Greear wrote:
> I just added some support for SCTP to my traffic-generator tool.
> 
> I tried to send 1Gbps of traffic, bi-directional, across two
> 10G interfaces.  TCP does this without any trouble at all,
> but SCTP was asymetric and never got above around 700Mbps,
> and was usually stuck at < 500Mbps.
> 
> perf top didn't show any obvious CPU bottlenecks.
> 
> Has anyone done any recent performance testing with SCTP?
> 
> I'd be interested to know the results if so...

You mean there is no SCTP offload on the NIC and/or GRO, yes that's too
bad.

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