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234 Storage Management with DB2 for OS/390
SYSTEM
1 CACHE SUBSYSTEM ACTIVITY
PAGE 1
OS/390 SYSTEM ID QP02 START 02/12/1999-15.05.39 INTERVAL 000.38.01
REL. 02.06.00 RPT VERSION 2.6.0 END 02/12/1999-15.43.41
0SUBSYSTEM 3990-03 CU-ID 71C0 SSID 603C CDATE 02/12/1999 CTIME 15.05.41 CINT 00.37.56
TYPE-MODEL 3990-006
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CACHE SUBSYSTEM STATUS
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0SUBSYSTEM STORAGE NON-VOLATILE STORAGE STATUS
0CONFIGURED 256.0M CONFIGURED 32.0M CACHING - ACTIVE
AVAILABLE 254.9M PINNED 0.0 NON-VOLATILE STORAGE - ACTIVE
PINNED 0.0 CACHE FAST WRITE - ACTIVE
OFFLINE 0.0 IML DEVICE AVAILABLE - YES
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CACHE SUBSYSTEM OVERVIEW
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0TOTAL I/O 50278 CACHE I/O 50276 CACHE OFFLINE 0
TOTAL H/R 0.999 CACHE H/R 0.999
-CACHE I/O -------------READ I/O REQUESTS------------- ----------------------WRITE I/O REQUESTS---------------------- %
REQUESTS COUNT RATE HITS RATE H/R COUNT RATE FAST RATE HITS RATE H/R READ
0NORMAL 28486 12.5 28418 12.5 0.998 20030 8.8 20030 8.8 20030 8.8 1.000 58.7
SEQUENTIAL 32 0.0 32 0.0 1.000 1728 0.8 1728 0.8 1728 0.8 1.000 1.8
CFW DATA 0 0.0 0 0.0 N/A 0 0.0 0 0.0 0 0.0 N/A N/A
0TOTAL 28518 12.5 28450 12.5 0.998 21758 9.6 21758 9.6 21758 9.6 1.000 56.7
------------------------CACHE MISSES----------------------- ------------MISC------------ ------NON-CACHE I/O-----
REQUESTS READ RATE WRITE RATE TRACKS RATE COUNT RATE COUNT RATE
DFW BYPASS 0 0.0 ICL 0 0.0
NORMAL 68 0.0 0 0.0 68 0.0 CFW BYPASS 0 0.0 BYPASS 2 0.0
SEQUENTIAL 0 0.0 0 0.0 0 0.0 DFW INHIBIT 0 0.0 TOTAL 2 0.0
CFW DATA 0 0.0 0 0.0 ASYNC (TRKS) 1066 0.5
0TOTAL 68 RATE 0.0
----CKD STATISTICS--- ---RECORD CACHING---
0WRITE 1 READ MISSES 68
WRITE HITS 1 WRITE PROM 9473
1 CACHE SUBSYSTEM ACTIVITY
OS/390 SYSTEM ID QP02 START 02/12/1999-15.05.39 INTERVAL 000.38.01
REL. 02.06.00 RPT VERSION 2.6.0 END 02/12/1999-15.43.41
0SUBSYSTEM 3990-03 CU-ID 71C0 SSID 603C CDATE 02/12/1999 CTIME 15.05.41 CINT 00.37.56
TYPE-MODEL 3990-006
0------------------------------------------------------------------------------------------------------------------------------------
CACHE SUBSYSTEM DEVICE OVERVIEW
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0VOLUME DEV DUAL % I/O ---CACHE HIT RATE-- ----------DASD I/O RATE---------- ASYNC TOTAL READ WRITE %
SERIAL NUM COPY I/O RATE READ DFW CFW STAGE DFWBP ICL BYP OTHER RATE H/R H/R H/R READ
0*ALL 100.0 22.1 12.5 9.6 0.0 0.0 0.0 0.0 0.0 0.0 0.5 0.999 0.998 1.000 56.7
*CACHE-OFF 0.0 0.0
*CACHE 100.0 22.1 12.5 9.6 0.0 0.0 0.0 0.0 0.0 0.0 0.5 0.999 0.998 1.000 56.7