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- From: Andreas Jungmaier <ajung AT exp-math.uni-essen.de>
- To: discussion AT sctp.de, "Alberto Bellettato" <alberto.bellettato AT icn.siemens.it>
- Subject: Re: [SCTP-Discussion] Re: Performances of high speed data transmission
- Date: Mon Feb 18 10:37:00 2002
- List-id: SCTP Discussions <discussion.sctp.de>
- Organization: University Essen
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Alberto, all,
On Saturday, 16. February 2002 16:56, Alberto Bellettato wrote:
> I tried to increment RWND ("myRwnd"), but I did not obtain a performance
> increment. I did not set the buffer size for raw ip sockets, I will try it.
> But I think the problem do not reside in it, considering that, using a
> 100Mb/s link, a normal ftp session (supposed to have a similar default ip
> buffer size) can achieve more than 10Mb/s, while my test is limited to less
> than 2Mb/s (8000 messages/s = 8000 * 20Bytes * 8 = 1,28Mb/s).
>
Please also take into account the overhead you get in that situation.
What you put on the link with SCTP is a lot more than 8000*20 Bytes, if
messages are not bundled, whereas TCP uses 1460 Bytes Payload per packet.
So, you need to compute the absolute link load for SCTP and TCP, and
compare these. Might look a little better for our implementation, which
after all is still a prototype :-)
Best regards,
Andreas
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- [SCTP-Discussion] Re: Performances of high speed data transmission, Alberto Bellettato, 02/16/2002
- Re: [SCTP-Discussion] Re: Performances of high speed data transmission, Michael Tuexen, 02/16/2002
- Re: [SCTP-Discussion] Re: Performances of high speed data transmission, Andreas Jungmaier, 02/18/2002
- Re: [SCTP-Discussion] Re: Performances of high speed data transmission, Brian F. G. Bidulock, 02/18/2002
- Re: [SCTP-Discussion] Re: Performances of high speed data transmission, Andreas Jungmaier, 02/18/2002
- Re: [SCTP-Discussion] Re: Performances of high speed data transmission, Brian F. G. Bidulock, 02/18/2002
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