Experimental Physics and Industrial Control System

I agree with Jeff Hill's general comments.

One point he implied but didn't make explicitly, is that it is possible 
today to run multiple log servers on different port numbers and have each 
IOC connect up to its own private log server, hence steering the log 
output from that IOC to its own log file.  Combine this with the Keck 
changes and you can keep monthly logs for each IOC independently.

Another alternative is to send to the logServer output to a named pipe 
instead of to a file, and have another process reading the named pipe, 
examine the IOC name at the start of each line and redirect the output as 
necessary.  I have tried this and it works under Solaris, although I do 
get "truncation error 22" messages from the logServer, but these could be 
redirected to /dev/null.

- Andrew
   ___
 .'   `.	Andrew Johnson, Head of Electronics
/ Royal )	Royal Greenwich Observatory
\ Greenwich	Madingley Road, Cambridge, CB3 0EZ
| Observatory	Tel: +44 1223 374823   Fax: 374700
+----------	WWW: http://www.ast.cam.ac.uk/~anj

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Re: proposal: IOC logger Jim B. Kowalkowski

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