RE: Accessing a file in memory

["Raikov, Lo" <RaikovL@xxxxxxxxxx>]

Well, how much would you like to bet? :-)

Lo

> -----Original Message-----
> From: Rob Berendt [SMTP:rob@dekko.com]
> Sent: Tuesday, July 25, 2000 11:23 PM
> To:   MIDRANGE-L@midrange.com
> Subject:      RE: Accessing a file in memory
> 
> I bet my users are happier with the response on my machine than they 
> are with the response on yours.
> As we consolidate more divisions on to this 400 the biggest support call 
> we get is that they can't find their job running.  It always turns out 
> that the job has already completed and they can't believe that it ran 
> that fast.
> 
> 
> 
> 
> 
> RaikovL@mki.com.au on 07/25/2000 03:06:18 AM
> Please respond to MIDRANGE-L@midrange.com@Internet
> To:   MIDRANGE-L@midrange.com@Internet
> cc:    
> Fax to:       
> Subject:      RE: Accessing a file in memory
> 
> Rob,
> 
> I'm afraid I'd have to disagree. Maybe I'm stretching it a bit, but if you
> have inherently long-running batch jobs in the system and your overall CPU
> utilization is less than 100%, it means you are underutilizing your
> equipment! If a batch job does not devour all that's left after all
> high-priority jobs are served, it can only have two explanations: either
> the
> job is not designed to efficiently use CPU or there is a bottleneck
> somewhere in the system (e.g. the system is thrashing). As I said, I
> exaggerated it a bit, but the principle still stands.
> 
> Lo
> 
> > -----Original Message-----
> > From:       Rob Berendt [SMTP:rob@dekko.com]
> > Sent:       Monday, July 24, 2000 11:16 PM
> > To: MIDRANGE-L@midrange.com
> > Subject:    RE: Accessing a file in memory
> > 
> > You're right.  Basing a purchasing decision on a one time peak is
> probably
> > 
> > not good.  But, to come up with reasons why constantly running at 70-90%
> > is 
> > acceptable when you should be upgrading is not good either.
> > 
> > 
> > 
> > 
> > 
> > RaikovL@mki.com.au on 07/20/2000 08:38:48 PM
> > Please respond to MIDRANGE-L@midrange.com@Internet
> > To: MIDRANGE-L@midrange.com@Internet
> > cc:  
> > Fax to:     
> > Subject:    RE: Accessing a file in memory
> > 
> > No if he has extra $ to spend. The trouble is a decision like that is
> very
> > often taken just on the basis of the peak CPU utilisation. 
> > 
> > Lo
> > 
> > > -----Original Message-----
> > > From:     Rob Berendt [SMTP:rob@dekko.com]
> > > Sent:     Friday, July 21, 2000 1:17 AM
> > > To:       MIDRANGE-L@midrange.com
> > > Subject:  RE: Accessing a file in memory
> > > 
> > > <SNIP>
> > > There is nothing wrong with 90% CPU utilization as such. It only
> becomes
> > a
> > > problem when app.. 70% is used by response-time critical jobs. 
> > > <ENDSNIP>
> > > 
> > > There's also nothing wrong with a boss which upon noticing a system
> > > hitting 
> > > 40% of CPU, and planning for future growth, doubles the number of
> > > processors 
> > > and adds a ton of memory.
> > > 
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