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Conference iosg::all-in-1_v30

Title:*OLD* ALL-IN-1 (tm) Support Conference
Notice:Closed - See Note 4331.l to move to IOSG::ALL-IN-1
Moderator:IOSG::PYE
Created:Thu Jan 30 1992
Last Modified:Tue Jan 23 1996
Last Successful Update:Fri Jun 06 1997
Number of topics:4343
Total number of notes:18308

3876.0. "Size of Write Window" by GIDDAY::JOYCE (Burn me kangaroo down sport) Mon Feb 14 1994 05:54

    
    A customer has asked...
    
    "Does Digital have a recommended mail area WRITE WINDOW size for a
    given number of users?"
    
    e.g. for, say, mail area A with 50 allocated (not concurrent) users; 
    	how big should the write window be?
    
    I *know* it depends on how many mail messages each user typically sends
    - so let's say 10
    
    
    
T.RTitleUserPersonal
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3876.1Not that I've ever seen a real live system :-)IOSG::PYEGraham - ALL-IN-1 Sorcerer's ApprenticeTue Feb 15 1994 11:1516
    You're probably going to get a better answer to this from the
    experienced people in the field, but...
    
    I always suggest the same sort of strategy as any tuning exercise,
    which is to try it and see what happens.
    
    You need to aim for a suffieciently high number so that you don't have
    to create new ones very often, say every couple of months. So create
    "some" and watch how fast they fill up. If it's in a week or two,
    create several more or vice versa.
    
    Finally, what's the problem with creating "lots" to start with? I can't
    see that it will be any serious overhead, and will smooth out disc
    accesses more...
    
    IMHO, Graham