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

Unix, Xenix and ODT General FAQ


Some material is very old and may be incorrect today

© December 2003 (various)

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.

Why did my region table overflow (Old Sco Unix)?

Each process generally consists of several (usually, but not always, three) regions - typically code, data, and stack. Two copies of the same program running at the same time will often share code, reducing the number of regions required; however, there's nothing to stop a program from using more than three regions, either.

There is a tunable kernel parameter, NREGION, which specifies the maximum number of regions available. This should always be set to at least three times the number of processes (NPROC), and if you want to be on the safe side, use four times NPROC. Note that in OSR5, by default, both NREGION and NPROC are allocated dynamically.


If you found something useful today, please consider a small donation.



Got something to add? Send me email.





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

Printer Friendly Version

->
-> (SCO Unix) Why did my region table overflow?


Inexpensive and informative Apple related e-books:

Take Control of iCloud, Fifth Edition

Are Your Bits Flipped?

Photos for Mac: A Take Control Crash Course

Take Control of Parallels Desktop 12

Take Control of IOS 11






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





You can't do it unless you can imagine it. (George Lucas)




Linux posts

Troubleshooting posts


This post tagged:

FAQ

SCO_OSR5



Unix/Linux Consultants

Skills Tests

Unix/Linux Book Reviews

My Unix/Linux Troubleshooting Book

This site runs on Linode