RE: We've Added more memory...but I can't remember!

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My boss was a tuning maven.  Constantly adjusting pools and whatnot.  Now,
on our 840 12 way, and our other boxes, he just lets the system do the
adjusting itself and it does a pretty good job.

Rob Berendt
--
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
Benjamin Franklin




"Andy Nolen-Parkhouse" <aparkhouse@attbi.com>
Sent by: midrange-l-admin@midrange.com
07/10/2002 11:42 AM
Please respond to midrange-l


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        Subject:        RE: We've Added more memory...but I can't remember!


Rick,

Yes, if you do not have performance adjustment turned on, then all
additional memory will go to *base.  No, you don't need to make the
machine pool bigger because you've added additional memory.  Best bet
would be to examine the faulting rates in your various pools, including
the machine pool.  The work management manual will provide guidelines
for acceptable levels depending on the power of the machine.  Only older
manuals are available in any depth, perhaps there is something in
InfoCenter.

If you have oodles of memory now, why not just turn on the automatic
adjustment and see where the pools settle.  The auto tuning works much
better than it did in the older releases and might just make your life
easier and your users happier.

Regards,
Andy Nolen-Parkhouse

> On Behalf Of Rick Rayburn
> Subject: We've Added more memory...but I can't remember!
>
> ...if I need to "goose" up the machine pool with additional "wattage".
>
> the memory was added because we got a great deal on the chips NOT
because
> we
> were experiencing problems. I believe all of the additional "K" was
dumped
> into *BASE but I'm not certain.
> Does anyone remember/know if memory additions ALWAYS dump into Base?
> If it does, any GENERAL rule of thumb to follow for incrementing the
> MACHINE
> pool? I believe I OVER-allocated memory to the "SPOOL POOL" by
granting an
> average of 300 K per active writer. Any thoughts on that as well...or
> anything else memory-pool related?
>
> Thanks all.
>
> Rick Rayburn


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