APLawrence.com -  Resources for Unix and Linux Systems, Bloggers and the self-employed

SCO Unix Serial Communications and UUCP

This article is from a FAQ concerning SCO operating systems. While some of the information may be applicable to any OS, or any Unix or Linux OS, it may be specific to SCO Xenix, Open There is lots of Linux, Mac OS X and general Unix info elsewhere on this site: Search this site is the best way to find anything.

I increased my SCO Unix UUCP window size but nothing changed

This is an ancient post with no relevance to modern systems.

When UUCP is negotiating a connection, each side will tell the other what window size to use when sending. Therefore, if your window size is 7 and the remote uses 3, you will be sending files using a window size of 3, but the other side may send with a window size of up to 7. Note that the UUCP on the other side may not support the window size you specify, and may send with a smaller window than you requested. While this should not cause problems, it may provide lower performance than you'd like.

If your connection does not have data compression, error correction, or long transmission delays, and the two sites involved have sufficient CPU power to respond quickly to incoming packets, a window size of 2 or 3 should be sufficient to achieve streaming data flow. In this case, a larger window size will not provide any benefit.

If you have a Telebit modem, see the Telebit notes below.

Got something to add? Send me email.

(OLDER)    <- More Stuff -> (NEWER)    (NEWEST)   

Printer Friendly Version

-> I increased my UUCP window size but nothing changed (SCO Unix)

Printer Friendly Version

Have you tried Searching this site?

This is a Unix/Linux resource website. It contains technical articles about Unix, Linux and general computing related subjects, opinion, news, help files, how-to's, tutorials and more.

Contact us

Printer Friendly Version

An atheist is just somebody who feels about Yahweh the way any decent Christian feels about Thor or Baal or the golden calf. As has been said before, we are all atheists about most of the gods that humanity has ever believed in. Some of us just go one god further. (Richard Dawkins)



Unix/Linux Consultants

Skills Tests

Unix/Linux Book Reviews

My Unix/Linux Troubleshooting Book

This site runs on Linode