How to analyse Job Trace

Hello,

can anyone help me ?


From: Uma Balasubramanian on 09/23/2002 02:53 PM

To:   rpg400-l@midrange.com
cc:

Subject:  How to analyse Job Trace

Hi,

A) I am using Trace Job Tool in the following manner:

> STRJOBTRC
> Call Program_Name (RPGLE program with just Keyed delete in a do loop for
deleting 6 records - hardcoded the key value)
> ENDJOBTRC MBR(MyMember) LIB(MyLib)
> PRTJOBTRC MBR(MyMember) LIB(MyLib) RPTTYPE(*SUMMARY)

There are 6 records in the physical file with the same key value hardcoded
in the program. After the program is run, these 6 records are not present
and the file is used only by my program

B) I get the following Information:

Trace Analysis Summary Output

                                              P H Y S I C A L   I / O
                    SECONDS    CPU SECONDS     DB READS  NON-DB RDS
WRITES  WAIT
 WAIT-ACT           3.538
 ACTIVE             .023
          67           14          1
 WAIT-ACT           3.487
 ACTIVE             .138
          5                   2
 WAIT-ACT           9.434
 AVERAGE         .058
     36            7          2
 TOTAL              .115
          72           14          3


Trace Analysis I/O Summary Output

                                P R O G R A M     *******  PROGRAM DATA
BASE
                    SECONDS  SEQNCE      NAME           CALL INIT GETDR
GETSQ GETKY  GETM   PUTM
 WAIT-ACT           3.538          144
 ACTIVE             .023           645        QUOMAIN        2
          9
 WAIT-ACT           3.487          650
 ACTIVE             .138           896        QUOMAIN
 WAIT-ACT           9.434          901
 AVERAGE         .058              2                         1
               5
 TOTAL              .115                                          2
               9


 UDR OPN CLS OPN CLS READS WRITES  MSGS

   6      1      1                       1         8         5

          1                        2          12        4

   3      1      1                       2         10        5
   6      2      1                       3         20        9


C) My Question

a) Why CPU Seconds  is not shown in Trace Analysis summary ?
b) Why no DB Reads in Trace Analysis summary ?
c) Why My program name is not listed in Trace Analysis I/O summary and only
QUOMAIN is shown?
d) What is the significance of these UDR, OPN, CLS, OPN, CLS, READS, WRITES
and MSGS fields in Trace Analysis I/O summary ?
e) Does the total .115 seconds indicate response time ?
f) How to know which of the lines in Trace Analysis I/O summary is
corresponding to my program ?
g) How to analyse this further for performance improvement ?

Can kindly anyone help me ?