Re: Backup performance (CFINT)

At 10:44 AM 11/6/00 -0500, you wrote:

This is an interesting subject.  The performance people that I know at IBM 
claim that CFINT hits whenever you exceed the interactive threshold.  The 
system managers (who claim to know more about performance than the 
performance people [if you believe that]) disagree, and say that CFINT 
doesn't happen in a restricted state.

Bruce Vining, do you have an opinion?

Al


>Question:
>
>I'm about to move to RISC.  I have read about the CFINT governor.  If my
>daily backup (library *ALLUSR) runs interactively in a restricted
>system, will this governor kick in and not allow the backup to proceed
>as fast as in batch?
>
>4 days a week (Mon-Thu), the operator inserts the tape into the drive
>and takes the backup option.  This backup is then submitted and then
>runs at 4am in batch.  On Friday evening, however, it runs immediately
>(ain't nobody here on Saturday).  I used to do it interactively.  I was
>afraid that this would kill performance under RISC, so I batched it.
>The interactive job (which is in subsystem QCTL) stays active and keeps
>the operator advised of the status.  The problem is the interactive job
>user's message queue object does not get saved from QUSRSYS since it is
>allocated to the interactive job.  If I go back to running this
>interactively on Fridays, this problem would go away, but what about
>that rascal CFINT job kicking in?
>
>--
>-Jeff
>The opinions expressed are my own and not necessarily
>the opinion of my company.  Unless I say so.
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