Hi,
One of our team here is experiencing a severe performance issue while
running a job. They asked for a Strobe trace which says Extended Cross memory
access is eating up most of the CPU time. Any guess on what could be the reason.
Thanks in Advance,
Shaja
*******************************************************************************
** MEASUREMENT SESSION DATA **
-------- JOB ENVIRONMENT -------- ------- MEASUREMENT PARAMETERS ------
PROGRAM MEASURED - OSD205 ESTIMATED SESSION TIME - 1 MIN
JOB NAME - OSD20017 TARGET SAMPLE SIZE - 10,000
JOB NUMBER - JOB03293 REQUEST NUMBER (Q) - 33
STEP NAME - PS0100.PS0010
DATE OF SESSION - 04/18/2006
TIME OF SESSION - 20:12:45 OPTIONS - COBOL DB2 NOJSTCB
CONDITION CODE - C-0000
SYSTEM - z/OS 01.06.00 --------- REPORT PARAMETERS ---------
DFSMS - 1.6.0
SUBSYSTEM - DB2 8.1.0 CMP REPORT RESOLUTION - 64 BYTES
CPU MODEL - 2064-1C9 SORTSIZE - 999,999
SYSTEM ID - PR02 LINES/PAGE - 60
COUPLING FACILITY NAMES:
CFP03 CFP04 DASD= 2.0% DASDGAP= 5
LPAR - PR02
64-BIT ARCHITECTURE ENABLED DATE FORMAT - MM/DD/YYYY
TIME FORMAT - HH:MM:SS
----- MEASUREMENT STATISTICS ----
CPS TIME PERCENT - 92.64
WAIT TIME PERCENT - 7.36
RUN MARGIN OF ERROR PCT - .81
CPU MARGIN OF ERROR PCT - .85
TOTAL SAMPLES TAKEN - 44,497
TOTAL SAMPLES PROCESSED - 14,496
INITIAL SAMPLING RATE- 166.67/SEC
FINAL SAMPLING RATE - 20.83/SEC
SESSION TIME - 16 MIN 26.21 SEC
CPU TIME - 4 MIN 1.28 SEC
WAIT TIME - 0 MIN 19.17 SEC
STRETCH TIME - 12 MIN 5.75 SEC
SRB TIME - 0 MIN 1.04 SEC
SERVICE UNITS- 2,310,256
PAGES IN- 0 OUT- 0
***************************************************************
1STROBE* PERFORMANCE PROFILE OSD205
- ** MOST INTENSIVELY EXECUTED PROCEDURES **
-MODULE SECTION PROCEDURE/FUNCTION CPU TIME PERCENT
NAME NAME NAME SOLO TOTAL
.XMEMORY .XMEMORX EXTENDED CROSS MEMORY 74.32 74.32
.COMMON .COMMONX EXTENDED COMMON AREA 16.39 16.39
.NUCLEUS IEAVEPS1 POST SERVICE 3.16 3.16
.XMEMORY CROSS MEMORY 2.16 2.16
.NUCLEUS IEAVRT05 TIMER SERVICE 1.36 1.36
.DB2 DSNXEEZ DATA BASE PROGRM REQUEST 1.00 1.00
.NUCLEUS IRARMFIP SYSTEM RESOURCE MGMT .52 .52
.NUCLEUS IEAVTSFR SETFRR SERVICE .35 .35
.NUCLEUS IEAVELK SPIN LOCK SERVICE .32 .32
.NUCLEUS IGVCPOOL CELL POOL GET/FREE .25 .25
-
-
***************************************************************
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