[tao-users] TCP no delay, nagle algorithm

[Michael...@leica-geosystems.com]

Hello

I'm using TAO version 1.5a_p5 for Win32.

Can you tell me what's the default value of the tcp protocol properties? Especially i'm interested in the "no-delay" option.
If the no-delay is true, the nagle algorithm is disabled.
http://en.wikipedia.org/wiki/Nagle_algorithm

When searching for this no_delay parameter, the only place where it's initialized is in TAO\tao\Protocols_Hooks.cpp but i cannot find anything related to TCP there..

So can you tell me where i can find the default protocol values?

Regards
Michael

[Johnny Willemsen]

Hi,

 

See TAO Programmers Guide for the overview of the RTCORBA Protocol properties, there also the defaults are listed. Do note that the TPG is focused at the doc_group distribution of TAO.

 

Regards,

 

Johnny Willemsen
Remedy IT
Postbus 101
2650 AC  Berkel en Rodenrijs
The Netherlands
www.theaceorb.nl / www.remedy.nl 

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[Steve Totten]

Hi Michael,

Johnny Willemsen wrote:

> See TAO Programmers Guide for the overview of the RTCORBA Protocol
> properties, there also the defaults are listed. Do note that the TPG is
> focused at the doc_group distribution of TAO.

While you can use the RTCORBA protocol properties, as Johnny
suggests, you can control certain TCP protocol properties using
ORB initialization options (which can be passed via the command
line).

See $TAO_ROOT/docs/Options.html (whether in TAO 1.5a or the DOC
Group distribution):

-ORBNodelay boolean (0|1) Enable or disable the TCP_NODELAY
option (Nagle's algorithm). By default, TCP_NODELAY is enabled.

-ORBRcvSock receive buffer size Specify the size of the
socket receive buffer as a positive, non-zero integer. If not
specified, the ACE_DEFAULT_MAX_SOCKET_BUFSIZ default is used.

-ORBSndSock send buffer size Specify the size of the socket
send buffer as a positive, non-zero integer. If not specified, the
ACE_DEFAULT_MAX_SOCKET_BUFSIZ default is used.

These are also documented in the OCI TAO Developer's Guide.

Steve Totten

> *From:* tao-user...@list.isis.vanderbilt.edu
> [mailto:tao-user...@list.isis.vanderbilt.edu] *On Behalf Of
> *Michael...@leica-geosystems.com
> *Sent:* Friday, May 23, 2008 8:33 AM
> *To:* tao-...@list.isis.vanderbilt.edu
> *Subject:* [tao-users] TCP no delay, nagle algorithm

>
>
>
>
> Hello
>
> I'm using TAO version 1.5a_p5 for Win32.
>
> Can you tell me what's the default value of the tcp protocol properties?
> Especially i'm interested in the "no-delay" option.
> If the no-delay is true, the nagle algorithm is disabled.
> http://en.wikipedia.org/wiki/Nagle_algorithm
>
> When searching for this no_delay parameter, the only place where it's
> initialized is in TAO\tao\Protocols_Hooks.cpp but i cannot find anything
> related to TCP there..
>
> So can you tell me where i can find the default protocol values?
>
> Regards
> Michael

--
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Steve Totten, Principal Software Engineer and Partner
Object Computing, Inc. (OCI), St. Louis, MO, USA
http://www.ociweb.com/ http://www.theaceorb.com/
----------------------------------------------------------------

[Johnny Willemsen]

Hi,

> > See TAO Programmers Guide for the overview of the RTCORBA Protocol
> > properties, there also the defaults are listed. Do note that the TPG
> is
> > focused at the doc_group distribution of TAO.
>
> While you can use the RTCORBA protocol properties, as Johnny
> suggests, you can control certain TCP protocol properties using
> ORB initialization options (which can be passed via the command
> line).

I was more referring to the defaults, the tables show that TCP_NODELY is
enabled by default. That confirms what Michael needed.

Johnny