Re: a cume install time estimation formula

["Peter Dow" <pcdow@xxxxxxxxx>]

Hi Steve,

It sounds like what's needed is a a program that would look at the cume CD,
compare it to what's already on your system, and apply the formula
accordingly. And as long as we're wishing, if IBM could put the time
required at cpw=1 on each PTF on the cume, the program could give fairly
accurate estimates.

Peter Dow
Dow Software Services, Inc.
909 425-0194 voice
909 425-0196 fax

----- Original Message -----
From: "Steve Richter" <srichter@AutoCoder.com>
To: <MIDRANGE-L@midrange.com>
Sent: Wednesday, May 16, 2001 2:22 PM
Subject: Re: a cume install time estimation formula


>
>
> >
> >I see a couple of problems with your formula:
> >TimeForEachPtfOnCpw1Sys - PTF sizes are so different that PTF application
> >time is wildly different. Did you mean average time across all known PTFs
?
>
>
> cpw1 time used to apply the avg ptf on the cume.
>
> >Besides you make an assumption that PTF load/temp apply time and PTF perm
> >apply/supercede time are the same. Actually it's much faster to perm
> >apply/supercede PTF already on system than to load and temp apply a new
> >one. This is why the more PTFs already on system, the faster cume apply.
>
>
> did not know that.  so formula would have include an avg cpw1 time to load
> the avg size ptf and a 2nd cpw1 time to perm apply/supercede the avg ptf.
>
> alexie, are you saying that a cume may contain ptf's that are already on
the
> system and the ptf load will effectively skip those already present ptf's?
>
> if so, the formula would need to account for ptf on the cume that already
> exist on the system, which might be difficult to est ahead of time.
>
> also, is a ptf a new, corrected copy of a pgm?  or is it a patch to a pgm?
>
>
> thanks,
> Steve Richter
>
>
>
>
>
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