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  • Subject: RE: Optimum Block Size for Disk Reads
  • From: Neil Palmer <npalmer@xxxxxxxxxxx>
  • Date: Fri, 14 Aug 1998 15:03:05 -0600



> -----Original Message-----
> From: ghutchinson@tstoverland.com [SMTP:ghutchinson@tstoverland.com]
> Sent: Thursday, August 13, 1998 10:12 AM
> To:   MIDRANGE-L@midrange.com
> Subject:      Re: Optimum Block Size for Disk Reads
> 
> On Wed, 12 Aug 1998 17:49:52 -0400, Mark Lazarus <mlazarus@ttec.com>
> wrote:
> 
> >Gord,
> >
> >At 10:50 AM 8/11/98 -0400, you wrote:
> >>On the CISC box, we used to determine the number of records which
> would fit
> >>into a 32k buffer and use this in an OVRDBF to optimize the number
> of
> >>records read per physical I/O.  The buffer size changed on the RISC
> boxes
> >>but I can't find the note I made on the new size.  Would someone
> refresh my
> >>memory please?
> >
> > 128K.
> >
> > -mark
> >
> Thanks Mark.  For some reason I thought it was higher but a search
> through
> some old messages in comp.sys.ibm.as400.misc shows this to be the
> consensus.  Faulty memory again I guess.
> 
> Gord
> 
> If that memory is under IBM maintenance, just put in a service call
> and they'll replace it !   ;-)
> 
> 
> Neil Palmer                                AS/400~~~~~      
> NxTrend Technology - Canada   ____________          ___  ~     
> Thornhill, Ontario,  Canada   |OOOOOOOOOO| ________  o|__||=   
> Phone: (905) 731-9000  x238   |__________|_|______|_|______)   
> Cell.: (416) 565-1682  x238    oo      oo   oo  oo   OOOo=o\   
> Fax:   (905) 731-9202       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
> mailto:NPalmer@NxTrend.com    AS/400  The Ultimate Business Server
> 
> http://www.NxTrend.com
> 
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