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The Cache Subsystem Activity Detail report includes all
information provided by the Cache Subsystem Activity Summary
report (see previous report, Figure 3-18). In addition, a
report similar to the subsystem level report is provided for
each device attached to the control unit that had caching
activated over the RMF measurement interval.
Figure 3-19 shows a sample of the detailed output produced
for each device when the Cache Subsystem Activity Detail
report is requested. The SAS source code used is in
sharedprefix.MICS.SOURCE member:
o @RMFCAC8 - for all systems producing the SMF type 74
subtype 5 Cache Subsystem Device Activity
record.
The CA MICS files used to generate the report are:
o HARCVA - Cache Volume Activity
o HARCCU - Cache Control Unit Activity
o HARRRA - RAID Rank Activity
Note: The HARCVA file is required to produce the Cache
Detail report. If you attempt to produce this report
from a CA MICS timespan where the HARCVA file is not
active, the report generator will produce a Cache
Subsystem overview report only.
The HARRRA file is required to produce the Cache
Detail report. However, if you attempt to produce
this report from a CA MICS timespan where the HARRRA
file is not active, the only missing information in
the Detail Report will be the RAID Rank Activity
section located after the Device Overview section.
For further information on the report format and contents,
see z/OS RMF Report Analysis (SC33-7991).
USAGE CONSIDERATIONS: The information recorded in the type
74 subtype 5 cache subsystem activity record, the data source
for the HARCVA Cache Device Activity, HARCCU Cache Control
Unit Activity and HARRRA RAID Rank Activity files, contains
total cache subsystem activity. Only one system in a shared
DASD environment needs to collect this record type.
If you collect type 74 subtype 5 records with more than one
system sharing a particular caching subsystem, and process
these records in CA MICS, your CA MICS database will contain
redundant information. To avoid unnecessary processing and
excessive print volume, you can restrict your reporting to a
single SYSID as shown in section 3.1.1.14.
This report can be voluminous. The summary report (CACHESUM)
avoids printing detailed information for each attached
volume. It should be used to identify subsystems where more
detail is required. Once a subsystem is identified as
interesting, you can use a SELECT statement to restrict
detail reporting to a particular subsystem. Examples of
restricting the cache reporting to a single subsystem are
shown in section 3.1.1.14.
C A C H E S U B S Y S T E M A C T I V I T Y Page 001 z/OS Sysplex: PLEXPROD System: SYS1 Start Date Start Time End Time Duration Release: VnRn RMF Ver: 715 RMF Interval: mm/dd/yyyy 0:29:00.00 0:59:00.28 0:30:00.28 Subsystem: 2105-01 CU-ID: AD10 Sub-ID: 2D00 Cache Interval: mm/dd/yyyy 0:28:44.72 0:58:44.72 0:30:00.00 Type-Model: 2105-800 Manuf: IBM Plant: 13 Serial Number: 000000027229 Volser: VMCHI3 Num: AD00 RRID: 0D00 ================================================================================================================================== CACHE DEVICE STATUS ================================================================================================================================== Cache Status Duplex Pair Status Caching - ACTIVE Duplex Pair - NOT ESTABLISHED DASD Fast Write - ACTIVE Status - N/A Pinned Data - NONE Dual Copy Volume - N/A ================================================================================================================================== DEVICE OVERVIEW ================================================================================================================================== Total I/O 12 Cache I/O 12 Cache Offline 0 Total H/R 100.00% Cache H/R 100.00% CACHE I/O ------------ READ I/O REQUESTS ------------- ----------------------WRITE I/O REQUESTS---------------------- % REQUESTS Count Rate Hits Rate Hit % Count Rate Fast Rate Hits Rate Hit % Read Normal 12 0.0 12 0.0 100.00 0 0.0 0 0.0 0 0.0 N/A 100.00 Sequential 0 0.0 0 0.0 N/A 0 0.0 0 0.0 0 0.0 N/A N/A CFW Data 0 0.0 0 0.0 N/A 0 0.0 N/A N/A 0 0.0 N/A N/A ------ ----- ------ ----- ------ ------ ----- ------ ----- ------ ----- ------ ------ Totals 12 0.0 12 0.0 100.00 0 0.0 0 0.0 0 0.0 N/A 100.00 -----------------------CACHE MISSES----------------------- ------------MISC------------ ------NON-CACHE I/O----- REQUESTS Read Rate Write Rate Tracks Rate Count Rate Count Rate Normal 0 0.0 0 0.0 0 0.0 DFW Bypass 0 0.0 ICL 0 0.0 Sequential 0 0.0 0 0.0 0 0.0 CFW Bypass 0 0.0 Bypass 0 0.0 CFW Data 0 0.0 0 0.0 DFW Inhibit 0 0.0 ------ ----- ------ ----- ------ ----- ------ ----- Async (Trks) 12 0.0 Totals 0 0.0 Totals 0 0.0 0 0.0 0 0.0 ---CKD STATISTICS--- ---RECORD CACHING--- Write 0 Read Misses 0 Write Hits 0 Write Proms 0
Figure 3-19. Cache Subsystem Activity Detail Report (3990 and 2105, Part 1 of 2)
C A C H E S U B S Y S T E M A C T I V I T Y Page 004 z/OS Sysplex: PLEXPROD System: SYS1 Start Date Start Time End Time Duration Release: VnRn RMF Ver: 715 RMF Interval: mm/dd/yyyy 0:29:00.00 0:59:00.28 0:30:00.28 Subsystem: 2107-01 CU-ID: AE00 Sub-ID: 2E00 Cache Interval: mm/dd/yyyy 0:28:44.72 0:58:44.72 0:30:00.00 Type-Model: 2107-921 Manuf: IBM Plant: 13 Serial Number: 000000027229 Volser: TZQ@03 Num: AE01 Extent Pool: 0100 ================================================================================================================================== CACHE DEVICE STATUS ================================================================================================================================== Cache Status Duplex Pair Status Caching - ACTIVE Duplex Pair - NOT ESTABLISHED DASD Fast Write - ACTIVE Status - N/A Pinned Data - NONE Dual Copy Volume - N/A ================================================================================================================================== DEVICE OVERVIEW ================================================================================================================================== Total I/O 89 Cache I/O 89 Cache Offline 0 Total H/R 100.00% Cache H/R 100.00% CACHE I/O -------------READ I/O REQUESTS------------- ----------------------WRITE I/O REQUESTS---------------------- % REQUESTS Count Rate Hits Rate Hit % Count Rate Fast Rate Hits Rate Hit % Read Normal 89 0.0 89 0.0 100.00 0 0.0 0 0.0 0 0.0 N/A 100.00 Sequential 0 0.0 0 0.0 N/A 0 0.0 0 0.0 0 0.0 N/A N/A CFW Data 0 0.0 0 0.0 N/A 0 0.0 N/A N/A 0 0.0 N/A N/A ------ ----- ------ ----- ------ ------ ----- ------ ----- ------ ----- ------ ------ Totals 89 0.0 89 0.0 100.00 0 0.0 0 0.0 0 0.0 N/A 100.00 -----------------------CACHE MISSES----------------------- ------------MISC------------ ------NON-CACHE I/O----- REQUESTS Read Rate Write Rate Tracks Rate Count Rate Count Rate Normal 0 0.0 0 0.0 0 0.0 DFW Bypass 0 0.0 ICL 0 0.0 Sequential 0 0.0 0 0.0 0 0.0 CFW Bypass 0 0.0 Bypass 0 0.0 CFW Data 0 0.0 0 0.0 DFW Inhibit 0 0.0 ------ ----- ------ ----- ------ ----- ------ ----- Async (Trks) 3 0.0 Totals 0 0.0 Totals 0 0.0 0 0.0 0 0.0 ---CKD STATISTICS--- ---RECORD CACHING--- ----HOST ADAPTER ACTIVITY--- --------DISK ACTIVITY------- Bytes Bytes Resp Bytes Bytes Write 17 Read Misses 0 /Req /Sec Time /Req /Sec Write Hits 17 Write Proms 0 Read 72.4K 8.5K Read 706 131.9K 210.0K Write 69.5K 11.8K Write 870 127.2K 211.1K
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