The frequency of a reorg is also a factor. When all is said and done, it's
still ISAM 101.
Paul Nelson
Office 512-392-2577
Cell 708-670-6978
nelsonp@xxxxxxxxxxxxx
-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Crispin Bates
Sent: Tuesday, June 15, 2010 1:04 PM
To: Midrange Systems Technical Discussion
Subject: Re: System slow-down - disk usage?
Is CHAIN always faster? If the large majority of the data access is failing
(the records are not found), then CHAIN is going to be quicker, because
SETLL has to position the file pointer to EOF, and with 20 Million Records,
that might slow things down slightly.
At least that's what Barbara Morris seemed to think here -
http://forums.systeminetwork.com/isnetforums/showthread.php?t=49800
Not sure if that's what is happening in this case, or if there is anything
OP can do, as the file seems to grow and then get smaller, based on the
description...
----- Original Message -----
From: "Charles Wilt" <charles.wilt@xxxxxxxxx>
To: "Midrange Systems Technical Discussion" <midrange-l@xxxxxxxxxxxx>
Sent: Tuesday, June 15, 2010 1:42 PM
Subject: Re: System slow-down - disk usage?
SETLL does keyed access, and is faster than a chain if all you want to
know is does the record exist.
Charles
midrange.com
