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Connecting to other computers with UUCP

What to check if UUCP is abnormally slow

Because UUCP is a batching network, requests are not executed immediately. Therefore, when users report that UUCP does not work, the problem may be that the system is slow. If the system is slower than usual, check for the following problems:

  1. Check the spool directories, /usr/spool/uucppublic and /usr/spool/uucp for an overload of old work files and remove them.

  2. Use ps(C) to verify that there are not too many uucico processes going at once. The limit to the number of communications processes is specified in /usr/lib/uucp/Maxuuscheds and /usr/lib/uucp/Maxuuxqts. Check to see that the limit is not too high (the default is 1).

  3. Make sure that the filesystem that contains the spool directory is not out of space. Refer to ``Maintaining free space in filesystems'' for more information.

  4. The /usr/lib/uucp/uudemon.clean script performs general cleanup by removing old files that are trying unsuccessfully to execute. To change the frequency of the cleanings, edit the find statement in the uudemon.clean script.

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SCO OpenServer Release 5.0.7 -- 11 February 2003