Cache Subsystems Overview Report
This report is produced by the CACHEACT Analyzer control statement when the REPORT= parameter is either omitted or specified as REPORT=OVERVIEW.
Use this report to see an overview of each subsystem's activity or to find out if a particular subsystem is either under- or overutilized.
By default, subsystems are ordered by subsystem ID (SSID on the report), but the order can be changed by the ORDER= parameter. The report can be filtered by cache subsystem model type or subsystem ID.
The following figure shows an example of the Cache Subsystems Overview Report.
BMC SOFTWARE, INC. BMC SOFTWARE, INC. REPORT DATE: DD MMM YY 16.44
REQD 10 JUN YY 09.50.00 10 JUN YY 10.20.00 HOUSTON, TX. SYSTEM ID: SJSE Z v.rr.n
ACTL 10 JUN YY 09.50.00 10 JUN YY 10.20.00 REPORT CYCLE: CYCLE099
BASED ON REC TYPE/# RECS/# SAMPLES/REC HOURS: 74-5/24/0/0.5
CTRL STORAGE(MB) --I/O RATE- --CACHE HIT RATE- -----DASD I/O RATE----------- ASYNC -----% HITS------ %
SSID TYPE UNIT STATUS CACHE NVS CACHE OFF READ DFW CFW STAGE DFWBP ICL BYP OTHER RATE TOTAL READ WRITE READ
---- ------- ---- ------ ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- -----
0027 3990-03 5590 ACTIVE 1,024 8 0.4 0 0.4 0 0 0 0 0 0 0 0 99.9 99.9 0 100.0
0140 3990-06 8350 ACTIVE 28.1K 192 640.4 0 564.1 61.1 0 9.3 0 0.2 5.7 0 18.2 97.6 98.4 99.9 90.4
0144 3990-06 8733 ACTIVE 28.1K 192 192.5 0 97.9 94.4 0 0.2 0 0 0 0 0 99.9 99.8 100.0 51.0
0240 3990-06 8573 ACTIVE 28.1K 192 340.0 0 274.7 45.0 0 7.1 0 0 13.5 0 14.4 94.0 97.6 99.3 86.2
A300 2105-20 A333 ACTIVE 4,096 192 8.1 0 2.9 5.1 0 0 0 0 0 0 1.4 100.0 99.9 100.0 36.4
AC03 2105-20 C103 ACTIVE 4,096 192 25.8 0 25.6 0.1 0 0 0 0 0 0 0.1 100.0 100.0 100.0 99.4
PRODUCED BY CMF ANALYZER (v.r.mm RSL yymm ) CACHE SUBSYSTEMS OVERVIEW REPORT RPTSEQ 3 PAGE 6
BMC SOFTWARE, INC. BMC SOFTWARE, INC. REPORT DATE: DD MMM YY 16.44
REQD 10 JUN YY 09.50.00 10 JUN YY 10.20.00 HOUSTON, TX. SYSTEM ID: SJSE Z v.rr.n
ACTL 10 JUN YY 09.50.00 10 JUN YY 10.20.00 REPORT CYCLE: CYCLE099
BASED ON REC TYPE/# RECS/# SAMPLES/REC HOURS: 74-5/24/0/0.5
----------------------------------- MOST ACTIVE DEVICES -- IN DESCENDING ORDER BY TOTAL I/O RATE -----------------------------------
DEV VOLUME ----STATUS--- % I/O -CACHE HIT RATE- --------DASD I/O RATE-------- ASYNC -------% HITS------ %
NUM SERIAL SSID CACHE DASDFW I/O RATE READ DFW CFW STAGE DFWBP ICL BYP OTHER RATE TOTAL READ WRITE READ
----- ------ ---- ------ ------ ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- -----
08710 TSG337 0144 ACTIVE ACTIVE 87.7 168.9 84.5 84.4 0 0 0 0 0 0 0 100.0 100.0 100.0 50.0
08368 BAB319 0140 ACTIVE ACTIVE 6.9 44.4 43.8 0.1 0 0.5 0 0 0 0 0 98.9 98.9 100.0 99.7
083AE TSG322 0140 ACTIVE ACTIVE 6.9 44.2 43.7 0.4 0 0 0 0 0 0 0.1 99.9 99.9 100.0 99.0
083AC TSG320 0140 ACTIVE ACTIVE 4.2 27.0 26.6 0.1 0 0.2 0 0 0 0 0 99.3 99.3 100.0 99.5
083A2 TSG310 0140 ACTIVE ACTIVE 3.3 20.9 20.8 0 0 0.1 0 0 0 0 0 99.7 99.7 100.0 100.0
08525 SAZ12I 0240 ACTIVE ACTIVE 6.1 20.6 20.4 0 0 0.2 0 0 0 0 0 99.1 99.1 0 100.0
08712 TSG339 0144 ACTIVE ACTIVE 10.4 20.1 10.1 10.0 0 0 0 0 0 0 0 100.0 100.0 100.0 50.1
08526 SAZ12J 0240 ACTIVE ACTIVE 5.7 19.5 19.4 0 0 0 0 0 0 0 0 99.7 99.7 0 100.0
0C11A SHK026 AC03 ACTIVE ACTIVE 73.5 18.9 18.9 0 0 0 0 0 0 0 0 100.0 100.0 0 100.0
085E9 TSG324 0240 ACTIVE ACTIVE 5.0 17.0 14.3 2.7 0 0.1 0 0 0 0 0.1 99.6 99.6 99.8 84.2
08552 APD282 0240 ACTIVE ACTIVE 4.7 15.9 7.8 7.6 0 0 0 0 0.5 0 0.3 96.9 99.7 99.9 50.6
08330 TSG301 0140 ACTIVE ACTIVE 2.5 15.7 14.2 0.2 0 1.3 0 0 0 0 0.1 91.5 91.5 99.1 98.8
08360 BAB311 0140 ACTIVE ACTIVE 2.2 14.1 13.9 0.2 0 0.1 0 0 0 0 0 99.5 99.4 100.0 98.9
08311 SYM030 0140 ACTIVE ACTIVE 2.1 13.7 11.0 2.7 0 0 0 0 0 0 0.1 99.8 99.9 99.7 80.6
08367 BAB318 0140 ACTIVE ACTIVE 2.0 13.1 12.9 0.1 0 0.1 0 0 0 0 0.1 99.0 99.0 99.2 99.5
08306 SYSP14 0140 ACTIVE ACTIVE 1.9 12.4 11.9 0.5 0 0 0 0 0 0 0.1 99.9 99.9 100.0 96.1
08308 SYSP15 0140 ACTIVE ACTIVE 1.9 12.2 11.9 0.3 0 0 0 0 0 0 0.1 99.7 99.7 99.8 97.9
083A0 TSG308 0140 ACTIVE ACTIVE 1.9 12.1 11.5 0.6 0 0 0 0 0 0 0.2 99.9 99.9 100.0 95.3
----------------------------------- MOST ACTIVE DEVICES -- IN DESCENDING ORDER BY DASD I/O RATE ------------------------------------
DEV VOLUME ----STATUS--- % I/O -CACHE HIT RATE- --------DASD I/O RATE-------- ASYNC -------% HITS------ %
NUM SERIAL SSID CACHE DASDFW I/O RATE READ DFW CFW STAGE DFWBP ICL BYP OTHER RATE TOTAL READ WRITE READ
----- ------ ---- ------ ------ ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- -----
0858C SAEPG1 0240 ACTIVE ACTIVE 2.5 8.4 0.2 0.1 0 0 0 0 8.1 0 1.2 3.3 99.7 100.0 66.5
0833B SAEPG2 0140 ACTIVE ACTIVE 0.4 2.3 0.1 0 0 0 0 0 2.3 0 1.6 2.5 98.1 0 100.0
0850F SHRA06 0240 ACTIVE ACTIVE 0.6 2.1 0.3 0 0 0 0 0 1.8 0 0 16.4 99.3 100.0 96.2
08572 SANWK1 0240 ACTIVE ACTIVE 1.2 4.2 0.8 1.6 0 0 0 0 1.7 0 0.4 58.6 99.5 99.9 34.3
08330 TSG301 0140 ACTIVE ACTIVE 2.5 15.7 14.2 0.2 0 1.3 0 0 0 0 0.1 91.5 91.5 99.1 98.8
0851B BAB303 0240 ACTIVE ACTIVE 2.6 8.9 4.9 2.8 0 0.3 0 0 0.9 0 0.1 85.9 93.9 100.0 65.3
0830B SMFE36 0140 ACTIVE ACTIVE 0.4 2.6 0.1 1.6 0 0 0 0 0.9 0 0.9 63.1 97.8 100.0 3.1
08307 PAGF49 0140 ACTIVE ACTIVE 0.2 1.0 0.1 0 0 0 0 0 0.9 0 1.4 8.3 100.0 100.0 81.6
085C7 BAB367 0240 ACTIVE ACTIVE 1.3 4.5 3.6 0.2 0 0.7 0 0 0 0 0 84.4 83.8 99.4 96.0
085BE SMS005 0240 ACTIVE ACTIVE 0.4 1.3 0.8 0 0 0.5 0 0 0 0 0 60.6 60.6 100.0 100.0
08552 APD282 0240 ACTIVE ACTIVE 4.7 15.9 7.8 7.6 0 0 0 0 0.5 0 0.3 96.9 99.7 99.9 50.6
08368 BAB319 0140 ACTIVE ACTIVE 6.9 44.4 43.8 0.1 0 0.5 0 0 0 0 0 98.9 98.9 100.0 99.7
085C8 BAB368 0240 ACTIVE ACTIVE 1.5 5.0 4.5 0.1 0 0.4 0 0 0 0 0 91.8 91.6 99.6 97.4
083AF HSM300 0140 ACTIVE ACTIVE 1.6 10.0 9.3 0.4 0 0.4 0 0 0 0 0.3 96.0 95.9 100.0 96.3
083F3 FAT307 0140 ACTIVE ACTIVE 0.5 3.4 2.9 0.1 0 0.4 0 0 0 0 0 88.2 88.0 100.0 98.1
08369 BAB320 0140 ACTIVE ACTIVE 1.3 8.4 6.9 1.1 0 0.4 0 0 0 0 0.3 95.5 94.8 100.0 86.3
085C6 BAB366 0240 ACTIVE ACTIVE 1.4 4.8 4.4 0.1 0 0.4 0 0 0 0 0.1 92.6 92.5 99.2 98.6
0856C FAT312 0240 ACTIVE ACTIVE 1.5 5.0 4.5 0.1 0 0.3 0 0 0 0 0.1 93.2 93.1 100.0 97.4
Cache Subsystems Overview Report field descriptions
The following table describes each field that is displayed in the Cache Subsystems Overview Report.
Field | Description |
|---|---|
Overview section | |
SSID | Subsystem ID—a four-digit hexadecimal identifier that uniquely identifies the cache subsystem |
TYPE | Cache subsystem type |
CTRL UNIT | Physical control unit number of the caching subsystem; this number is equal to the lowest device number for the subsystem |
STATUS | Caching status of the entire subsystem |
STORAGE (MB) | Storage amounts, in megabytes:
|
I/O RATE | I/O requests per second, by type: CACHE— number of cacheable I/O requests to cache devices |
CACHE HIT RATE | I/O requests per second that completed without accessing DASD, by type:
|
DASD I/O RATE | I/O requests per second that accessed DASD, by type:
|
% HITS | I/O requests serviced from the cache, as percentages of all I/O requests:
|
READ | READ requests as a percentage of all I/O requests |
MOST ACTIVE DEVICES sections IN DESCENDING ORDER BY TOTAL I/O RATE and BY DASD I/O RATE | |
DEV NUM | Five-digit device number that uniquely identifies the DASD device |
VOLUME SERIAL | Volume serial number |
SSID | Subsystem ID—a four-digit hexadecimal identifier that uniquely identifies the cache subsystem |
STATUS | Cache status of the DASD device:
|
% I/O | I/O requests to this DASD volume, as a percentage of all I/O requests to the cache subsystem to which it belongs |
I/O RATE | I/O requests per second to the volume |
CACHE HIT RATE | I/O requests per second that completed without accessing DASD, by request type:
|
DASD I/O RATE | I/O requests per second that accessed DASD, by request type:
A high rate indicates that storage could be overcommitted. |
% HITS | I/O requests serviced from the cache, as percentages of all I/O requests:
|
READ | READ requests as a percentage of all I/O requests |
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