Re: Performance Tools

You're right, that' show these things work. But they do this in fairly
short time frames, with, at least in AutoTune, some smoothing effect
(change based on last 3 or 5 readings, taken every 5 or 10 seconds). Tuning
by hand is, in my opinion, even worse, as far as your question goes. By the
time you've seen how something 'was' going, you're minutes away, usually.

A premise of these utilities is that the machine is very fluid, it's
constantly changing, and any guess for how it should be statically set will
be wrong most of the time.

At 03:01 AM 4/20/02 +0200, you wrote:
>Vernon Hamberg wrote:
>
> > 2. You can have the system automatically adjust pool settings. Check system
> > value QPFRADJ. This can move memory to the job that needs it. There's a 3rd
> > party product that does the same thing, and more, called AutoTune. With
> > either of these you no longer need to manage memory so much by yourself,
> > the system (or AutoTune) does it.
>
>Hi Vernon,
>
>Just a quick question here. Doesn't  QFPRADJ adjust the pool settings
>according
>to the workload it perceived within the previous snapshot? If that is the
>case,
>then it is always adjusting the pools to what they SHOULD have been, not
>to what
>they need to be. Am I right in saying this. Please correct me if I am wrong.
>
>Thanks.
>
>Jan.
>
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