Re: why cum ptf apply faster than predicted?

["Dave Shaw" <daveshaw@xxxxxxxxxxxxx>]

Another factor is that they appear to base the estimate on applying the cume
to a machine that doesn't have any previous cumes applied to it, i.e. a new
install or upgrade.  It takes a whole lot longer to load and apply 1500
PTF's than 150.

Dave Shaw
Simpsonville, SC
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----- Original Message -----
From: "Pat Barber" <mboceanside@worldnet.att.net>


> Let's see: How could they estimated the difference between a
> 840 and 170 and give a reasonable time ??? Since the PTF's are
> applied against MANY different processor types, I have NEVER
> understood how they would even try to guess at the install time.
>
> I assume you know that those cume packages cover processors dating
> back at least to 1994(9402-400) and everything forward to now ????
>
> I wouldn't even put down a guess.......
>
>
> > Steve Richter wrote:
> >
> > greetings,
> >
> > Did a cummulative ptf load after a v4r4 install.
> >
> > The cummulative ptf's were on 3 cd's. The system is a very fast, non
> > geared down 720.
> >
> > The cover letter said the ptf process would take from 4 to 8 hours.
> >
> > But it actually took 1 hour to load, apply and complete the auto ipl.
> > ( 17:57:31 to 18:47:50 )
> >
> > The history log msgs ( listed below ) show no indication of error.
> >
> > What does ibm base its time estimates on?
> >
> > This is not a trivial question.  Misstating the estimate results in
> > much wasted time double and triple checking to make sure that nothing
> > was missed, that the system is running ok.
> >
> >
> > Steve Richter
> >
> >
> > the history log says:
> > Loading of PTFs started.
> > Loading of PTFs completed successfully.
> > Marking of PTFs for delayed application started.
> > Marking of PTFs for delayed application completed successfully.
> > PTFs installed successfully, but actions pending.
> > Apply PTF started.
> > Applying of PTFs for product 5769999 completed successfully.
> > Applying of PTFs for product 5769SS1 completed successfully.
> > Applying of PTFs for product 5769AS1 completed successfully.
> > Applying of PTFs for product 5769DG1 completed successfully.
> > Applying of PTFs for product 5769JC1 completed successfully.
> > Applying of PTFs for product 5769JV1 completed successfully.
> > Applying of PTFs for product 5769PM1 completed successfully.
> > Applying of PTFs for product 5769PT1 completed successfully.
> > Applying of PTFs for product 5769PW1 completed successfully.
> > Applying of PTFs for product 5769QU1 completed successfully.
> > Applying of PTFs for product 5769RG1 completed successfully.
> >  Applying of PTFs for product 5769TC1 completed successfully.
> >  Applying of PTFs for product 5769XE1 completed successfully.
> >  Applying of PTFs completed.
> >  Initialize System (INZSYS) started.
> >  Initialize System (INZSYS) processing completed successfully.
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