Date: Mon, 14 May 2012 15:09:13 +0530 From: vansi wow <vansiwow@gmail.com> To: Michael Tuexen <Michael.Tuexen@lurchi.franken.de> Cc: freebsd-net@freebsd.org Subject: Re: Regarding SCTP performance Message-ID: <CAEsa=O1SJtXgdvB=YDs626QeAwo6rN3G1Ued7=-=mxbcBL67EA@mail.gmail.com> In-Reply-To: <8A60952E-4300-497B-9101-CEA952026F24@lurchi.franken.de> References: <CAEsa=O2Fa1u0BJ3nvHsskWxs=fV3r3jXz6dTZ7xUAtvRtXQ0cg@mail.gmail.com> <8A60952E-4300-497B-9101-CEA952026F24@lurchi.franken.de>
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Hi Michael,
Since we use NetBSD 3.0 on the router, the SCTP stack
code is ported to NetBSD 3.0 with some tweaks for the mips platform.
There are no packet loss , since for testing ,we hosted both client and
server on the same router . The CPU Load is very minimal since its just a
echo application for the test.
are there any performance related fixes in the new source which helps the
throughput.
Regards,
Vamshi
On Mon, May 14, 2012 at 2:14 PM, Michael Tuexen <
Michael.Tuexen@lurchi.franken.de> wrote:
> On May 14, 2012, at 12:21 AM, vansi wow wrote:
>
> > Hi All,
> > we have ported SCTP from FreeBSD 7.0 tree , but we face the
> Hi Vamshi,
>
> I would recommend to use more recent sources... There has been a huge
> number of bug fixes been committed. BTW: What exactly does "porting"
> mean? What system are you using?
> >
> > issue that when we measure the throughput performance of the stack , we
> see
> > that SCTP throughput is half that of the TCP throughput .
> >
> > Is there some tuning which can be done or some tweaks which can help
> > improve the performance .
>
> >
> >
> >
> > TCP :
> > =====
> > SO_SNDBUF = 32768
> > SO_RCVBUF = 32768
> > Throughput: 5653KB/s
> >
> >
> > SCTP:
> > ======
> > SNDBUF = 838860
> > RCVBUF = 838860
> > Throughput = 2422 KB/s
> Without any another information it is hard to say what is limiting the
> transfer.
> Do you have any packet loss? What is the CPU load when doing the transfer?
> FreeBSD 7 does not support CRC offloading...
>
> Best regards
> Michael
> >
> > Regards,
> > Vamshi
> > _______________________________________________
> > freebsd-net@freebsd.org mailing list
> > http://lists.freebsd.org/mailman/listinfo/freebsd-net
> > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
> >
>
>
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