4. EXCEPTIONS › 4.3 Detailed Exception Descriptions › 02013: Average Pages Per Swap Exceeds Max

02013: Average Pages Per Swap Exceeds Max

FILE: Paging Activity File
SAS FILE NAME: DAYS.SCPPAG01
SOURCE LOCATION: prefix.MICS.USER.SOURCE(DYRMFEXC)

SEVERITY: Impacting            (SEVERITY='I')
MANAGEMENT AREA: Performance   (MGMTAREA='PERFORMANCE')

PURPOSE:  Identify excessive swap overhead.

RATIONALE:  An important characteristic to track is the
average number of pages per swap, measured when the swap rate
is within normal bounds.  This may indicate an increased LSQA
amount due to a new or changed system function.

DEFINITION:  This exception is raised when the average number
of pages per swap exceeds the installation-defined maximum.

EXCEPTION STATEMENTS:  The SAS statements identifying the
exception situation and describing the condition are stored
in the source member named in SOURCE LOCATION and are
described below:

**  02013 AVERAGE PAGES PER SWAP EXCEEDS MAX
*;
PAGES=SUM(PAGAVPSO,PAGAVPSI);
IF PAGES GT pages
 THEN DO;
  EXCCODE='02013';SEVERITY='I';MGMTAREA='PERFORMANCE';
  EXCDESC1='AVERAGE PAGES PER SWAP EXCEEDS MAX';
  EXCDESC2='AVG PAGES OUT=' !! PUT(PAGAVPSO,5.1) !!
          ', AVG PAGES IN=' !! PUT(PAGAVPSI,5.1);
  LINK HIT;
END;

THRESHOLD MODIFICATION:  The user should modify the pages
value according to the following convention:

pages - The maximum number of pages per swap is specified.  A
threshold frame count of 40 would appear as:

PAGES GT 40