4. EXCEPTIONS › 4.3 Detailed Exception Descriptions › 01601: LPAR Partition Overutilized

01601: LPAR Partition Overutilized

FILE: PR/SM LPAR Config/Activity File
SAS FILE NAME: DAYS.HARLPC01
SOURCE LOCATION: prefix.MICS.USER.SOURCE(DYRMFEXC)

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

PURPOSE:  Detects an overutilized logical partition.

RATIONALE:  An overutilized logical partition may result from
an excessive workload or may serve as an indication of
improper LPAR definition criteria, such as poorly defined
partition weights.  Such a partition may dominate the central
processor complex (CPC) and cause the service objectives of
other logical partitions not to be met.  Detection of high
logical partition utilization may identify periods of poor
performance for other logical partitions, permitting further
investigation of the critical resources.

For additional information concerning interpretation and
usage of these values, refer to Section 6.8 of this guide.

DEFINITION:  This exception is detected when the logical
partition processor utilization percentage is above the site
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.

*****************************************;
*** 01601 *** PR/SM LPAR OVERUTILIZED ***;
*****************************************;
IF (SYSID EQ 'rsys')
 THEN IF ((HEXLPID EQ 'id1' AND LPCPCVPU GT percent1) OR
          (HEXLPID EQ 'id2' AND LPCPCVPU GT percent2) OR
          (HEXLPID EQ 'id3' AND LPCPCVPU GT percent3))
  THEN IF ((HOUR GE hh1 AND HOUR LE hh2) AND
           (DAYNAME NE 'SAT' AND DAYNAME NE 'SUN'))
   THEN DO;
     EXCCODE='01601'; SEVERITY='W'; MGMTAREA='PERFORMANCE';
     EXCDESC1='PR/SM LPAR OVERUTILIZED.  ID=' !! HEXLPID;
     EXCDESC2='LPAR ID=' !! HEXLPID !! ' WAS' !!
               PUT(LPCPCVPU,5.1) !! '% BUSY';
     LINK HIT;
   END;
THRESHOLD MODIFICATION:  Modify the recording SYSID, the LPAR
IDs, the percent values, and prime time according to the
following conventions:

rsys - The SYSID of the system whose measurements are to be
used to evaluate the exception condition.  If the evaluation
is to be made based on the information recorded by RMF
running in a system ID of SYS1, the statement would appear
as:

IF (SYSID EQ 'SYS1')

id - Specifies the logical partition ID, a two-character
hexadecimal number, with lead zero if applicable, in quotes.

percent - Specifies the maximum logical processor utilization
for a particular LPAR.

A 70 percent threshold for LPAR ID 1, a 80 percent threshold
for LPAR ID 2, and a 90 percent threshold for LPAR ID C
appear as:

IF ((HEXLPID EQ '01' AND LPCPCVPU GT 70) OR
    (HEXLPID EQ '02' AND LPCPCVPU GT 80) OR
    (HEXLPID EQ '0C' AND LPCPCVPU GT 90))

prime time - Specifies the hour range and days of the week to
be included in the exception.  The hour of the day must be
within the hh1 through hh2 range.  The days of the week are
represented by the first three characters of their names.
Prime time specified as 8:00 am through 6:59 pm (18:59) on
weekdays only appears as:

IF ((HOUR GE 8 AND HOUR LE 18) AND
    (DAYNAME NE 'SAT' AND DAYNAME NE 'SUN'))

The time period to be included may already be defined by
means of the ZONE definition, which provides a simpler method
of selecting hours and days for processing.  If ZONE 1
corresponds to the desired time period, it appears as:

IF ZONE EQ '1'