From: Traiano Welcome
> Sent: 13 October 2017 17:04
> On Fri, Oct 13, 2017 at 11:56 PM, David Laight <David.Laight@xxxxxxxxxx> wrote:
> > From: Traiano Welcome
> >
> > (copied to netdev)
> >> Sent: 13 October 2017 07:16
> >> To: linux-sctp@xxxxxxxxxxxxxxx
> >> Subject: Kernel Performance Tuning for High Volume SCTP traffic
> >>
> >> Hi List
> >>
> >> I'm running a linux server processing high volumes of SCTP traffic and
> >> am seeing large numbers of packet overruns (ifconfig output).
> >
> > I'd guess that overruns indicate that the ethernet MAC is failing to
> > copy the receive frames into kernel memory.
> > It is probably running out of receive buffers, but might be
> > suffering from a lack of bus bandwidth.
> > MAC drivers usually discard receive frames if they can't get
> > a replacement buffer - so you shouldn't run out of rx buffers.
> >
> > This means the errors are probably below SCTP - so changing SCTP parameters
> > is unlikely to help.
>
> Does this mean that tuning UDP performance could help ? Or do you mean
> hardware (NIC) performance could be the issue?
I'd certainly check UDP performance.
David
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