Re: Backup performance (CFINT)

[rob@xxxxxxxxx]

Nice that you qualified that with usually.  We took the same 3590 and the
same controller card from a 520 to a 730 and the SAVSYS portion of the
backup dropped from 44 minutes to 4 minutes.  Other times were just as
significant.  Yes you can buy a tape drive that will require a faster CPU
to drive it at rated speed.  Even if the processor is in a restricted
state.

Rob Berendt

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                    "Nathan M. Andelin"                                         
                                         
                    <nathanma@haaga.com        To:     
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                    Sent by:                   Subject:     Re: Backup 
performance (CFINT)                               
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                    11/06/00 06:04 PM                                           
                                         
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The backup device (tape?) is usually your first bottleneck.  Most backups
are I/O intensive - not CPU intensive.  In other words, your backup device
and I/O processors will slow the program down before it reaches a point
where CFINT might kick in.


>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?


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