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Re: Upgrade Options


  • Subject: Re: Upgrade Options
  • From: Gary Feinstein <gfeinste@xxxxxxxxxxxxxxxxxxx>
  • Date: Thu, 12 Feb 1998 10:04:57 -0500
  • Organization: Planet Hollywood International Inc.

fixed

Jeff,
        Thanx for the reply.  I pretty much figured the same thing regarding
the memory option.  I currently have 512Mg of memory which has very low
faulting rates in each pool.  Unfortunately, I think it would be real
tough trying to cost justify another processor into the machine at this
time.  We have only had the 400 for about a year and a half and it may
be too soon to hit the upper levels with a pricey upgrade.  While its
not URGENT, I did want to plan my upgrade options before it became a
problem.   

Gary

Jeff Carey wrote:
> 
> Gary Feinstein wrote:
> >
> > I am currently running a 510 with 512Mg of memory, 60 Gig DASD and 2143
> > processor.  At most, I have about 50 users on at the same time.  Lately,
> > some of my power users are running a number of resource intensive batch
> > jobs at the same time.  My quetion is:  What is the best was to upgrade
> > in order to get the most bang for the bubk.  Do I throw in another
> > processor (bringing me to 2 out of a total possible 4).  Or do I throw
> > more memory into the system.  I have heard that RISC is really greedy
> > when it comes to memory.  How can I test my system to see which is the
> > best option?
> > TIA,
> > Gary Feinstein
> > AS/400 System Administrator
> > Planet Hollywood International Inc.
> > +---
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> 
> Well, if you can, run one batch or a couple batch jobs at a time instead
> of all of them.  If you can't, run performance collection when the heavy
> batch jobs are running and model it with BEST/1 (part of Performance
> Tools/400).  Also watch WRKSYSSTS - are you getting a lot of faulting?
> can memory be moved from other pools to the pools running the batch
> jobs?  If all pool faulting is high, then more memory will help.  If
> not, a processor upgrade might help (multi-processor systems work great
> for batch throughput).
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