Date:         Tue, 29 May 2001 15:17:28 +0100
Reply-To:     Peter Crawford <peter.crawford@DB.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Peter Crawford <peter.crawford@DB.COM>
Subject:      Optimal use of work space
Comments: To: agordon@scoteq.co.uk
Content-type: text/plain; charset=iso-8859-1

add a proc contents data=work._all_ nods; run; at the end of the
SAS job. Examining the results you should find the info you need

from this sample of proc contents output....
Total Library Blocks:    50040
Total Used Blocks:       706
Total Free Blocks:       49334
Highest Used Block:      706

you can see that only 706 blocks of the 50040 allocated have been used.
This shows that the work allocation is  "way too much"
The Highest Used Block is the inportant statistic to examine.
The usage of the work library may be very small at the end of an
efficient process, particularly if work data sets are deleted when no
longer required. But I think the HighestUsed info indicates the max
usage of the allocation.

good luck



Datum:         29/05/2001 13:57
An:            SAS-L@listserv.uga.edu




Antwort an:    agordon@scoteq.co.uk

Betreff:       Optimal use of work space
Nachrichtentext:


I have been asked to review a suite of SAS batch jobs that run daily on our
OS390 TSO/MVS environment.  Some of these are large jobs, both in terms of time
and data input/output.

So, say, if the JCL for job1 reserves 49000 tracks for workspace how can I
determine in an easy and straight-forward fashion (if this is possible) if
that is way too much, just right, or n% larger than is needed ?

Many thanks.





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