4. EXCEPTIONS › 4.3 Detailed Exception Descriptions › 02024: Demand Paging Rate Exceeds Max

02024: Demand Paging Rate 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:  Identifies when the demand paging rate is causing
the System Resource Manager (SRM) to swap tasks.

RATIONALE:  The demand paging rate is used by the SRM in
determining under/overcommitment.  When the rate is above the
limit, multiprogramming will be decreased by unilateral
swaps.  Thus, this exception may identify the cause of
unilateral swapping when it occurs.

DEFINITION:  This exception is detected when the demand
paging rate 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:

**  02024 DEMAND PAGING RATE EXCEEDS MAX
*;
IF PAGPSDPG GT rate
 THEN DO;
  EXCCODE='02024';SEVERITY='I';MGMTAREA='PERFORMANCE';
  EXCDESC1='DEMAND PAGING RATE EXCEEDS MAX ';
  EXCDESC2='PAGE RATE=' !! PUT(PAGPSDPG,8.1) !! '/SEC';
  LINK HIT;
END;

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

rate - The maximum rate of demand paging per second is
specified.  A threshold rate of 100 would appear as:

PAGPSDPG GT 100