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In the case of bundling enabled(for new data sending), may be for a packet
of 20 chunks, the receiver will send one SACK.
Since the Cwnd increase is based on SACK count, the increment is slow in
comparison to non-bundling case.

Is there anything we can do at data sender side when we receive SACK?
Can we increase the Cwnd based on the Cumulative number of TSNs that are
ACKed?

Otherwise how the Cwnd increase wil become uniform in the case of bundling
and non-bundling?


rgds,
Prince
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-----Original Message-----
From: Michael Tüxen
[mailto:Michael.Tuexen AT micmac.franken.de]

Sent: Wednesday, July 14, 2010 7:55 PM
To:
princearimpur AT huawei.com
Cc:
sctp-discussion AT sctp.de
Subject: Re: [SCTP-Discussion] Bundling

On Jul 14, 2010, at 2:15 PM, Prince A P wrote:

> Hi,
>
> I'm a beginner to SCTP.
>
> As part of my load tetsing, I found that the Cwnd growth is poor when
bundling is enabled.
> I'm bundling new data in chunks. Each packet around 20 chunks.
> Since the receiver of data, sending one SACK per packet, the number of
SACK is less in comparison to non-bundling case.
>
> Is it a must that the receiver of data should send only one SACK per
packet?
>
> Is there already some mechanism to address this issue in SCTP?
Sending multiple SACKs for a packet should not help since SCTP does
something
called ABC in TCP.

Best regards
Michael
>
> rgds,
> Prince
>
>
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which is intended only for the person or entity whose address is listed
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but not limited to, total or partial disclosure, reproduction, or
dissemination) by persons other than the intended recipient's) is
prohibited. If you receive this e-mail in error, please notify the sender by
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>
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• [SCTP-Discussion] Bundling, Prince A P, 07/14/2010
  • Re: [SCTP-Discussion] Bundling, Michael Tüxen, 07/14/2010
    • RE: [SCTP-Discussion] Bundling, Prince A P, 07/19/2010
      • Re: [SCTP-Discussion] Bundling, Brian F. G. Bidulock, 07/22/2010
        • RE: [SCTP-Discussion] Bundling, Prince A P, 07/22/2010

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