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I am testing the multi-streaming feature and I think that the absence of
head-of-line blocking within streams should give better performances in case
of bundling utilization (but only if chunks with _different_ stream ID are
bundled inside of the same SCTP packet ).
For this reason I need to understand exacly when bundling is used
(unfortunately I could not extrapolate the implementation's logic from
Ethereal logs).
For this multi-streaming test, I would need that bundling is always used to
get top performances. But, setting SCTP_BUNDLING_ENABLED, bundling is _not_
always used. Then, under what conditions is it not used?

Best Regards,
Alberto

> From: Tuexen Michael
> <Michael.Tuexen AT icn.siemens.de>
> To:
> "'discussion AT sctp.de'"
>
> <discussion AT sctp.de>
> Cc: "'Alberto Bellettato'"
> <alberto.bellettato AT icn.siemens.it>
> Subject: RE: [SCTP-Discussion] Bundling
> Date: Thu, 14 Mar 2002 15:23:09 +0100
> Reply-To:
> discussion AT sctp.de
>
> Hi Alberto,
>
> we provide to constants:
> SCTP_BUNDLING_ENABLED
> SCTP_BUNDLING_DISABLED
>
> These affect the initial sending of there is not flowcontrol
> or congestioncontrol active which delays the sending. In case
> of retransmissions or delayed sending bundling can occur if
> it results in better protocol performance.
> Even if you set SCTP_BUNDLING_DISABLED the DATA chunk may
> be bundled on retransmissions.
>
> Why do you need this behaviour for testing? It should only be
> avoided that SCTP restricts the protocol performance unnecessary
> by waiting for data for bundling.
>
> Best regards
> Michael

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• [SCTP-Discussion] Re: Bundling, Alberto Bellettato, 03/16/2002
  • Re: [SCTP-Discussion] Re: Bundling, Andreas Jungmaier, 03/18/2002

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