• Subject: Re: Backup performance (CFINT)
  • From: Chuck Lewis <clewis@xxxxxxxxxx>
  • Date: Mon, 06 Nov 2000 16:08:48 -0500

And we have a 620-2179 and it has it too !

Chuck

"Al Barsa, Jr." wrote:

> At 11:56 AM 11/6/00 -0500, you wrote:
>
> Agreed, but that's all current models.  All 7XX, 8XX, 170 and 270 models
> fall into this category.
>
> Al
>
> >I think CFINT eats cycles only on server models (or those with purchased
> >interactive performance).
> >
> >-----Original Message-----
> >From: owner-midrange-l@midrange.com
> >[mailto:owner-midrange-l@midrange.com]On Behalf Of Richard Jackson
> >Sent: Monday, November 06, 2000 11:28 AM
> >To: MIDRANGE-L@midrange.com
> >Subject: RE: Backup performance (CFINT)
> >
> >
> >-|-----Original Message-----
> >-|From: owner-midrange-l@midrange.com
> >-|[mailto:owner-midrange-l@midrange.com]On Behalf Of Jeff Crosby
> >-|Sent: Monday, November 06, 2000 10:45 AM
> >-|To: IGNITE/400 Mailing List; Midrange Mailing List
> >-|Subject: Backup performance (CFINT)
> >-|
> >-|
> >-|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?
> >
> >No, probably.  At V4R4 and before if there is only one user, the governor
> >does not kick in.  I don't know about V4R5 on 800 series boxes - the
> >algorithm was changed.  The critical element is "restricted state".  If the
> >machine is not at a restricted state and other users are present, CFINT
> >could be triggered.
> >
> >-|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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> >
> >
> >Richard Jackson
> >Richard Jackson and Associates Ltd.
> >IBM Business Partner
> >mailto:richardjackson@richardjackson.net
> >http://www.richardjacksonltd.com
> >Telephone: 1 (303) 808-8058
> >
> >
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> +--------------------------------------------------+
> | Please do not send private mail to this address. |
> | Private mail should go to barsa@ibm.net.         |
> +--------------------------------------------------+
>
> Al Barsa, Jr. - Account for Midrange-L
> Barsa Consulting Group, LLC.
> 400 > 390
>
> Phone:          914-251-1234
> Fax:            914-251-9406
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> http://www.taatool.com
>
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