Pedro, If you don't already have one, a good start would be to get a
copy of the AIX Performance Tuning Guide from your local IBM sales rep.
It covers tuning the parameters you mentioned below for general network
performance improvement. You definitely want to turn rfc1323 on (I
believe the default is off.) You will also want to increase
tcp_sendspace, tcp_recvspace, sb_max, xmt_que_size and rec_que_size.
Bill
> -----Original Message-----
> From: Pedro Sanchez [SMTP:[email protected]]
> Sent: Thursday, October 29, 1998 1:38 PM
> To: [email protected]
> Subject: Tuning Parameters for TCP/IP link over Satellite in AIX
> 4.2.1 ?
>
> Hello everybody !!!
>
> I am a young engineer working in a project about telehealth care and
> I
> need to improve times on sending images using
> geostationary satellite links .
>
> We need roughly a speed about 128kbps (or better).
>
> Currently we are using 4 ISDN channels (512K) and it would be good to
> know if we can get this speed anyway.
>
> Our software runs on two IBM/RS6000 machines and operating system is
> AIX 4.2.1 .
>
> VideoConference will be running inside the application (project) too.
>
> Sockets are implemented in the application and possibly changes in the
> system will be needed too, I don't know !!!
>
> I know the "no" command for network parameters adjustment, Do I need
> to modify them?
> I found information on :
> - rfc1323.
> - max congestion window size.
> - buffer size.
> - tcp windows size.
> - etc ...
>
> However I don't know how to set the best tunning with them.
>
> thanks & regards..
>
>
> - Pedro Sanchez Garcia . (IBERMATICA).
>
This archive was generated by hypermail 2b29 : Mon Feb 14 2000 - 16:14:48 EST