Re: SCTP performance?

On 08/09/2013 04:21 PM, Eric Dumazet wrote:

On Fri, 2013-08-09 at 16:11 -0700, Ben Greear wrote:

quoted

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.

I'm sure that is part of the problem.

I got much better results when I explicitly set the
tx/rx socket buffer sizes to 2MB, so maybe it just sucks
at auto-tuning it's socket buffer sizes.

Thanks,
Ben

-- 
Ben Greear [off-list ref]
Candela Technologies Inc  http://www.candelatech.com