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  3. November 2000

Re: Backup performance (CFINT)

  • Subject: Re: Backup performance (CFINT)
  • From: Larry Bolhuis <lbolhuis@xxxxxxxxxx>
  • Date: Mon, 06 Nov 2000 22:07:48 -0500
  • Organization: Arbor Solutions, Inc
 
During troubleshooting of some communications problems (specifically
token-ring errors) we discovered that CFINT01 had taken over the entire
system on a NON-Server box, 95% of CPU and over 95% of system memory. 
Discussing this with support they indicated there there are other tasks
assigned to CFINTnn jobs besides 'CPU Burn' and some parts of
communications recovery is one of these tasks.

Therefore I wouldn't dismiss CFINTnn on non-server systems, it just
isn't 'playing govorner' on those systems.

 - Larry

"Al Barsa, Jr." wrote:
> 
> At 04:08 PM 11/6/00 -0500, you wrote:
> 
> Chuck,
> 
> With all due respect, you should not be getting this on 4XX, 5XX or 6XX
> hardware.  You should get it on SX0 hardware, as those were server models.
> 
> Al
> 
> >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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> > > >+---
> > > >
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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
> > > http://www.barsaconsulting.com
> > > http://www.taatool.com
> > >
> > > +---
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> > > +---
> >
> >+---
> >| This is the Midrange System Mailing List!
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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
> http://www.barsaconsulting.com
> http://www.taatool.com
> 
> +---
> | This is the Midrange System Mailing List!
> | To submit a new message, send your mail to MIDRANGE-L@midrange.com.
> | To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com.
> | To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com.
> | Questions should be directed to the list owner/operator: david@midrange.com
> +---

-- 
Larry Bolhuis
Arbor Solutions, Inc.
(616) 451-2500
(616) 451-2571 -fax
lbolhuis@arbsol.com
+---
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+---

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