6. DATA SOURCES › 6.8 PR/SM LPAR Concepts › 6.8.5 Data Analysis › 6.8.5.3 Processor Pool Level Analysis › 6.8.5.3.1 zSeries Processors' Pools › 6.8.5.3.1.1 Summarizing Processor Pool Data

6.8.5.3.1.1 Summarizing Processor Pool Data

You should be able to perform the most common analysis at the
summarized processor pool level by taking advantage of the
PR/SM LPAR Config/Activity (HARLPC) file's organization.
This straightforward process is described in the following
example.

Assume that the HARLPC file's granularity at the DAYS
timespan is:

SYSID  PRSMLPNM  PRSMLPTP  YEAR  MONTH  DAY  HOUR

This organization basically means that the HARLPC file
contains one observation per logical partition for each hour
of a day within a given recording system.  Besides its
specific data elements pertaining to a single LPAR, each
observation also carries various PR/SM common data elements
that total consumptions by processors' pool.

We can report on the totals in the HARLPC file's specific
data elements using the CA MICS standard data summarization
technique, by selecting the following new key/sequence:

SYSID  YEAR  MONTH  DAY  HOUR

The following data elements directly provide processor pool
measurements, at the CEC level:

o LPCTODTM:

  This element now represents the total dispatch time for
  all the processors in the standard CP pool.

o LPCTOMSU:

  This is the total MSUs consumption for the whole CEC.
  Note that only standard CPs contribute to this total.

o LPCTIDTM:

   This element now represents the total dispatch time for
   all the processors in the special purpose (ICF) pool.

Additionally we can compute a number of new measurements
based on the PR/SM common data elements, such as:

o CP pool total utilization:

  To know how much of the total physical standard CP
  processors' capacity was used, apply the following
  formula:

                   PRSMTCDT
  TOTCP_BS = ------------------- x 100
                        PRSMTCP
             DURATION x --------
                        INTERVLS

  -  Number of standard CPs used:

     The above percentage can also be represented as a number
     of physical standard CP processors used in regards to
     the pool's size:

                TOTCP_BS x PRSMACP
     NBRCP_BS = ------------------
                        100

     For example, a total utilization of 24% from a 7
     physical CP processors' pool would result in the number
     of processors used being equal to 1.68, meaning the
     system load would actually only require 2 physical
     processors.

  -  Shared CP pool utilization:

     To know how much of the shared physical standard CP
     processors' capacity was used, apply the following
     formula:

                      PRSMTCST
     SHRCP_BS = ----------------------------- x 100
                           PRSMTCP - PRSMTCDP
                DURATION x ------------------
                                 INTERVLS

  -  ICF pool total utilization:

     To know how much of the total physical special purpose
     processors' capacity was used, apply the following
     formula:

                      PRSMTIDT
     TOTICFBS = ------------------- x 100
                           PRSMTIP
                DURATION x --------
                           INTERVLS

  -  Number of special processors used:

     The above percentage can also be represented as a number
     of physical special purpose processors used in regards
     to the pool's size:

                TOTICFBS x PRSMAIP
     NBRICFBS = ------------------
                        100

  -  Shared ICF pool utilization:

     To know how much of the shared physical special purpose
     processors' capacity was used, apply the following
     formula:

                      PRSMTIST
     SHRICFBS = ----------------------------- x 100
                           PRSMTIP - PRSMTIDP
                DURATION x ------------------
                                 INTERVLS