4. EXCEPTIONS › 4.3 Detailed Exception Descriptions › 02801: Swaps per Ended Transaction Exceeds Max

02801: Swaps per Ended Transaction Exceeds Max

    FILE: Performance Group Activity File
    SAS FILE NAME: DAYS.SCPPGA01
    SOURCE LOCATION: prefix.MICS.USER.SOURCE(DYRMFEXC)

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

    PURPOSE:  Identify workloads with high swap activity.

    RATIONALE:  For online systems, a high swap rate can
cause response time degradation.  For batch systems, it can
mean overinitiation and unnecessarily elongated run times.

    DEFINITION:  This exception is detected when the average
number of swaps per ended transaction for selected
performance groups exceeds an 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:

  /* *************************************************
  **  02801 SWAPS PER ENDED TRANSACTION EXCEEDS MAX **
  ************************************************* */
IF (PERFGRP=perfgrp1 AND PGASPT > count1) OR
   (PERFGRP=perfgrp2 AND PGASPT > count2)
 THEN DO;
  EXCCODE='02801'; SEVERITY='I'; MGMTAREA='PERFORMANCE';
  EXCDESC1='SWAPS PER ENDED TRANSACTION EXCEEDS MAX';
  EXCDESC2='SWAPS/TRANSACTION=' || PUT(PGASPT,6.1) ||
                     ', GROUP=' || PUT(PERFGRP,3.) ||
                      ', NAME=' || PERFGRPN;
  LINK HIT;
END;

    THRESHOLD MODIFICATION:  The user should modify the
perfgrp and count values according to the following
conventions:

    perfgrp - The performance group number to be examined.

    count - The maximum swap count per transaction for the
performance group.

    A test for a swaps-per-transaction count in excess of 5
for performance group 6 would appear as:

    (PERFGRP=6 AND PGASPT > 5)