[sctp-dev] How to reduce time between message received and SCTPSACK sent

[Chathurika Sandarenu]

Dennis, I'm using *lksctp 1.0.10-1* latest one in the sourceforge.

On Thu, Oct 29, 2009 at 2:34 PM, Dennis Hjort <dennis.hjort at ericsson.com>wrote:

>  Hi again Sandarenu,
>
> Which version of lksctp are you using ?
>
> // D
>
>  ------------------------------
> *From:* Chathurika Sandarenu [mailto:sandarenu at gmail.com]
> *Sent:* den 29 oktober 2009 09:36
> *To:* Dennis Hjort
> *Cc:* sctp-dev at openjdk.java.net
> *Subject:* Re: [sctp-dev] How to reduce time between message received and
> SCTPSACK sent
>
> Thanks for replying Dennis,
>
> I tested with 2 suggestions you made, but still it take 200ms to send sack.
> I think there is some kind of configuration, since all the time it take
> 200ms.  Couldn't find any clue on this..... :(
>
> On Thu, Oct 29, 2009 at 11:25 AM, Dennis Hjort <dennis.hjort at ericsson.com>wrote:
>
>>  Hi,
>>
>> I'm not really sure if it helps you in your case, but when we've done some
>> tests with small packetsizes, we needed to set the
>>
>> SctpSocketOption <http://openjdk.java.net/projects/sctp/javadoc/b10/com/sun/nio/sctp/SctpSocketOption.html><Boolean <http://download.java.net/jdk7/docs/api/java/lang/Boolean.html?is-external=true>> *SCTP_NODELAY *
>>
>> to true, disabling Nagle Algorithm, to boost performance, as we mainly use
>> SCTP for control-signalling, thus using several small
>> packets spread over time, and the Nagle Algorithm wants to pack several
>> chunks together to improve performance, ie not useful in our case.
>>
>> // D
>>
>>  ------------------------------
>> *From:* sctp-dev-bounces at openjdk.java.net [mailto:
>> sctp-dev-bounces at openjdk.java.net] *On Behalf Of *Chathurika Sandarenu
>> *Sent:* den 29 oktober 2009 06:26
>> *To:* sctp-dev at openjdk.java.net
>> *Subject:* [sctp-dev] How to reduce time between message received and
>> SCTPSACK sent
>>
>>   Hi,
>>
>> I'm using OpenJDK SCTP to develop sigtran application. I have a small
>> issue SCTP SACK message. When a data message is received at SCTP
>> it acknowledges that with a SACK, the issue I'm having is that there is a
>> always 200ms delay between request receiving and SACK sending.
>>
>> *Is there a way I can reduce this delay?*
>>
>> I've attached the traces with this mail.
>>
>> Thanks in advance.
>>
>> regards,
>> Sandarenu.
>>
>>
>
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