IBM 5655-DB2 Server User Manual


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I/O Performance and Monitoring Tools 127
Figure 48. Cache Subsystem Activity Status and Overview Reports
Figure 49. Cache Subsystem Activity Device Overview Report
CACHE SUBSYSTEM ACTIVITY
PAGE 1
OS/390 SYSTEM ID IPO4 START 11/19/1998-10.30.00 INTERVAL 001.00.00
REL. 02.05.00 RPT VERSION 2.4.0 END 11/19/1998-11.30.00
SUBSYSTEM 3990-06 CU-ID 0395 SSID 0080 CDATE 11/19/1998 CTIME 10.30.01 CINT 00.59.59
TYPE-MODEL 3990-006
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CACHE SUBSYSTEM STATUS
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SUBSYSTEM STORAGE NON-VOLATILE STORAGE STATUS
CONFIGURED 1024.0M CONFIGURED 64.0M CACHING - ACTIVE
AVAILABLE 1019.8M 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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TOTAL I/O 1652K CACHE I/O 1650K CACHE OFFLINE 0
TOTAL H/R 0.990 CACHE H/R 0.992
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
NORMAL 856846 238.1 844376 234.6 0.985 238682 66.3 238682 66.3 238663 66.3 1.000 78.2
SEQUENTIAL 89018 24.7 88639 24.6 0.996 465283 129.3 465283 129.3 464130 129.0 0.998 16.1
CFW DATA 0 0.0 0 0.0 N/A 0 0.0 0 0.0 0 0.0 N/A N/A
TOTAL 945864 262.8 933015 259.2 0.986 703965 195.6 703965 195.6 702793 195.3 0.998 57.3
------------------------CACHE MISSES----------------------- ------------MISC------------ ------NON-CACHE I/O-----
REQUESTS READ RATE WRITE RATE TRACKS RATE COUNT RATE COUNT RATE
DFW BYPASS 229 0.1 ICL 1027 0.3
NORMAL 12470 3.5 19 0.0 6685 1.9 CFW BYPASS 0 0.0 BYPASS 876 0.2
SEQUENTIAL 379 0.1 1153 0.3 20583 5.7 DFW INHIBIT 0 0.0 TOTAL 1903 0.5
CFW DATA 0 0.0 0 0.0 ASYNC (TRKS) 83191 23.1
TOTAL 14021 RATE 3.9
----CKD STATISTICS--- ---RECORD CACHING---
WRITE 378 READ MISSES 7218
WRITE HITS 377 WRITE PROM 64526
CACHE SUBSYSTEM ACTIVITY
OS/390 SYSTEM ID IPO4 START 11/19/1998-10.30.00 INTERVAL 001.00.00
REL. 02.05.00 RPT VERSION 2.4.0 END 11/19/1998-11.30.00
SUBSYSTEM 3990-06 CU-ID 0395 SSID 0080 CDATE 11/19/1998 CTIME 10.30.01 CINT 00.59.59
TYPE-MODEL 3990-006
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CACHE SUBSYSTEM DEVICE OVERVIEW
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VOLUME 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
*ALL 100.0 458.9 259.2 195.3 0.0 3.8 0.1 0.3 0.2 0.0 23.1 0.990 0.986 0.998 57.3
*CACHE-OFF 0.0 0.0
*CACHE 100.0 458.9 259.2 195.3 0.0 3.8 0.1 0.3 0.2 0.0 23.1 0.990 0.986 0.998 57.3
SYSD01 0380 1.2 5.7 5.3 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.000 1.000 1.000 93.4
VLD100 0381 2.7 12.6 4.4 8.1 0.0 0.0 0.0 0.0 0.0 0.0 3.0 0.996 0.994 0.997 35.5
VLD074 0382 7.4 33.9 27.4 6.0 0.0 0.5 0.0 0.0 0.0 0.0 1.9 0.985 0.982 1.000 82.4
VLD101 0383 3.8 17.3 5.8 11.4 0.0 0.1 0.0 0.0 0.0 0.0 5.6 0.996 0.995 0.996 33.6
VLD312 0384 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.048 0.200 N/A 100.0
VLD105 0385 0.6 2.6 2.1 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.997 0.998 0.993 81.3
VLD134 0386 4.8 21.9 18.0 3.7 0.0 0.3 0.0 0.0 0.0 0.0 0.3 0.988 0.986 0.999 83.1
VLD071 0387 0.2 1.0 0.8 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.996 0.997 0.991 80.6
SPLD02 0388 6.3 28.8 10.7 17.4 0.0 0.7 0.0 0.0 0.0 0.0 1.3 0.977 0.942 1.000 39.6
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