Cache Activity - SMF record type 74-5

The following qualifiers are possible:
ssid
SSID number
devn
Device number
rrid
RAID rank identifier

To define a subsystem-related exception, you specify SSID(ssid)
To define a device-related exception, you specify SSID(ssid),DEVN(devn)
To define an exception for RAID rank data, you specify SSID(ssid),RRID(rrid)

For exception processing only:

The conditions CASSC, CADSC, and CASSNVS can be used only with the operator EQ, not with LE or GE.

Table 1. Cache Activity - Conditions Based on SMF Record Type 74-5
Condition Condition Name Qualifier Source Algorithm
Subsystem Status: Device Status: CACHING CASSC CADSC SSID(ssid) DEVN(devn) R745SOS R745DSDV active = R745SOS all 3 bits zero active = R745DSDV, both bits zero
Subsystem Status: NON-VOLATILE STORAGE CASSNVS SSID(ssid) R745SVSS active = Bit 0 to 4 zero
Subsystem Overview: Device Activity: TOTAL I/O CASTOT CADTOT SSID(ssid) DEVN(devn) R745DRCR R745DRSR R745DRNR R745DWRC R745DWSR R745DWNR R745DICL R745DBCR Sum of these counts
Subsystem Overview: Device Activity: CACHE I/O CASCTOT CADCTOT SSID(ssid) DEVN(devn) R745DRCR R745DRSR R745DRNR R745DWRC R745DWSR R745DWNR Sum of these counts
Subsystem Overview: CACHE OFFLINE CASCOFF SSID(ssid) R745DRCR R745DRSR R745DRNR R745DWRC R745DWSR R745DWNR R745DICL R745DBCR Sum of these counts
Subsystem Overview: Device Activity: TOTAL H/R CASHRT CADHRT SSID(ssid) DEVN(devn) HITS = R745DCRH + R745DRSH + R745DNRH + R745DWCH + R745DWSH + R745DWNH TOTAL = R745DRCR + R745DRSR + R745DRNR + R745DWRC + R745DWSR + R745DWNR + R745DICL + R745DBCR HITS / TOTAL
Subsystem Overview: Device Activity: CACHE H/R CASHR CADHR SSID(ssid) DEVN(devn) HITS = R745DCRH + R745DRSH + R745DNRH + R745DWCH + R745DWSH + R745DWNH CACHE I/O = R745DRCR + R745DRSR + R745DRNR + R745DWRC + R745DWSR + R745DWNR HITS / CACHE I/O
Subsystem Overview: Device Activity: READ I/O REQUESTS RATE NORMAL CASRN CADRN SSID(ssid) DEVN(devn) R745DRCR R745CINT R745DRCR / R745CINT
Subsystem Overview: Device Activity: READ I/O REQUESTS RATE SEQUENTIAL CASRS CADRS SSID(ssid) DEVN(devn) R745DRSR R745CINT R745DRSR / R745CINT
Subsystem Overview: Device Activity: READ I/O REQUESTS RATE CFW DATA CASRC CADRC SSID(ssid) DEVN(devn) R745DRNR R745CINT R745DRNR / R745CINT
Subsystem Overview: Device Activity: READ I/O REQUESTS RATE TOTAL CASRT CADRT SSID(ssid) DEVN(devn) R745CINT TOTAL = R745DRCR + R745DRSR + R745DRNR TOTAL / R745CINT
Subsystem Overview: Device Activity: READ I/O REQUESTS HITS RATE NORMAL CASRHN CADRHN SSID(ssid) DEVN(devn) R745DCRH R745CINT R745DCRH / R745CINT
Subsystem Overview: Device Activity: READ I/O REQUESTS HITS RATE SEQUENTIAL CASRHS CADRHS SSID(ssid) DEVN(devn) R745DRSH R745CINT R745DRSH / R745CINT
Subsystem Overview: Device Activity: READ I/O REQUESTS HITS RATE CFW DATA CASRHC CADRHC SSID(ssid) DEVN(devn) R745DNRH R745CINT R745DNRH / R745CINT
Subsystem Overview: Device Activity: READ I/O REQUESTS HITS RATE TOTAL CASRHT CADRHT SSID(ssid) DEVN(devn) R745CINT TOTAL = R745DCRH + R745DRSH + R745DNRH TOTAL / R745CINT
Subsystem Overview: Device Activity: READ I/O REQUESTS H/R NORMAL CASRHRN CADRHRN SSID(ssid) DEVN(devn) R745DCRH R745DRCR R745DCRH / R745DRCR
Subsystem Overview: Device Activity: READ I/O REQUESTS H/R SEQUENTIAL CASRHRS CADRHRS SSID(ssid) DEVN(devn) R745DRSH R745DRSR R745DRSH / R745DRSR
Subsystem Overview: Device Activity: READ I/O REQUESTS H/R CFW DATA CASRHRC CADRHRC SSID(ssid) DEVN(devn) R745DNRH R745DRNR R745DNRH / R745DRNR
Subsystem Overview: Device Activity: READ I/O REQUESTS H/R TOTAL CASRHRT CADRHRT SSID(ssid) DEVN(devn) HITS = R745DCRH + R745DRSH + R745DNRH TOTAL = R745DRCR + R745DRSR + R745DRNR HITS / TOTAL
Subsystem Overview: Device Activity: WRITE I/O REQUESTS RATE NORMAL CASWN CADWN SSID(ssid) DEVN(devn) R745DWRC R745CINT R745DWRC / R745CINT
Subsystem Overview: Device Activity: WRITE I/O REQUESTS RATE SEQUENTIAL CASWS CADWS SSID(ssid) DEVN(devn) R745DWSR R745CINT R745DWSR / R745CINT
Subsystem Overview: Device Activity: WRITE I/O REQUESTS RATE CFW DATA CASWC CADWC SSID(ssid) DEVN(devn) R745DWNR R745CINT R745DWNR / R745CINT
Subsystem Overview: Device Activity: WRITE I/O REQUESTS RATE TOTAL CASWT CADWT SSID(ssid) DEVN(devn) R745CINT TOTAL = R745DWRC + R745DWSR + R745DWNR TOTAL / R745CINT
Subsystem Overview: Device Activity: WRITE I/O REQUESTS FAST WRITE RATE NORMAL CASWFN CADWFN SSID(ssid) DEVN(devn) R745DFWC R745CINT R745DFWC / R745CINT
Subsystem Overview: Device Activity: WRITE I/O REQUESTS FAST WRITE RATE SEQUENTIAL CASWFS CADWFS SSID(ssid) DEVN(devn) R745DFWS R745CINT R745DFWS / R745CINT
Subsystem Overview: Device Activity: WRITE I/O REQUESTS FAST WRITE RATE CFW DATA CASWFC CADWFC SSID(ssid) DEVN(devn) R745DWNR R745CINT R745DWNR / R745CINT
Subsystem Overview: Device Activity: WRITE I/O REQUESTS FAST WRITE RATE TOTAL CASWFT CADWFT SSID(ssid) DEVN(devn) R745CINT TOTAL = R745DFWC + R745DFWS + R745DWNR TOTAL / R745CINT
Subsystem Overview: Device Activity: WRITE I/O REQUESTS HITS RATE NORMAL CASWHN CADWHN SSID(ssid) DEVN(devn) R745DWCH R745CINT R745DWCH / R745CINT
Subsystem Overview: Device Activity: WRITE I/O REQUESTS HITS RATE SEQUENTIAL CASWHS CADWHS SSID(ssid) DEVN(devn) R745DWSH R745CINT R745DWSH / R745CINT
Subsystem Overview: Device Activity: WRITE I/O REQUESTS HITS RATE CFW DATA CASWHC CADWHC SSID(ssid) DEVN(devn) R745DWNH R745CINT R745DWNH / R745CINT
Subsystem Overview: Device Activity: WRITE I/O REQUESTS HITS RATE TOTAL CASWHT CADWHT SSID(ssid) DEVN(devn) R745CINT TOTAL = R745DWCH + R745DWSH + R745DWNH TOTAL / R745CINT
Subsystem Overview: Device Activity: WRITE I/O REQUESTS H/R NORMAL CASWHRN CADWHRN SSID(ssid) DEVN(devn) R745DWCH R745DWRC R745DWCH / R745DWRC
Subsystem Overview: Device Activity: WRITE I/O REQUESTS H/R SEQUENTIAL CASWHRS CADWHRS SSID(ssid) DEVN(devn) R745DWSH R745DWSR R745DWSH / R745DWSR
Subsystem Overview: Device Activity: WRITE I/O REQUESTS H/R CFW DATA CASWHRC CADWHRC SSID(ssid) DEVN(devn) R745DWNH R745DWNR R745DWNH / R745DWNR
Subsystem Overview: Device Activity: WRITE I/O REQUESTS H/R TOTAL CASWHRT CADWHRT SSID(ssid) DEVN(devn) HITS = R745DWCH + R745DWSH + R745DWNH TOTAL = R745DWRC + R745DWSR + R745DWNR HITS / TOTAL
Subsystem Overview: Device Activity: % READ NORMAL CASRWN CADRWN SSID(ssid) DEVN(devn) R745DRCR R745DWRC R745DRCR * 100 / (R745DRCR + R745DWRC)
Subsystem Overview: Device Activity: % READ SEQUENTIAL CASRWS CADRWS SSID(ssid) DEVN(devn) R745DRSR R745DWSR R745DRSR * 100 / (R745DRSR + R745DWSR)
Subsystem Overview: Device Activity: % READ CFW DATA CASRWC CADRWC SSID(ssid) DEVN(devn) R745DRNR R745DWNR R745DRNR * 100 / (R745DRNR + R745DWNR)
Subsystem Overview: Device Activity: % READ TOTAL CASRWT CADRWT SSID(ssid) DEVN(devn) TOTAL_READ = R745DRCR + R745DRSR + R745DRNR TOTAL_WRITE = R745DWRC + R745DWSR + R745DWNR TOTAL_READ * 100 / (TOTAL_READ + TOTAL_WRITE)
Subsystem Overview: Device Activity: CACHE MISSES READ RATE NORMAL CASMRN CADMRN SSID(ssid) DEVN(devn) R745DRCR R745DCRH R745CINT (R745DRCR - R745DCRH) / R745CINT
Subsystem Overview: Device Activity: CACHE MISSES READ RATE SEQUENTIAL CASMRS CADMRS SSID(ssid) DEVN(devn) R745DRSR R745DRSH R745CINT (R745DRSR - R745DRSH) / R745CINT
Subsystem Overview: Device Activity: CACHE MISSES READ RATE CFW DATA CASMRC CADMRC SSID(ssid) DEVN(devn) R745DRNR R745DNRH R745CINT (R745DRNR - R745DNRH) / R745CINT
Subsystem Overview: Device Activity: CACHE MISSES WRITE RATE NORMAL CASMWN CADMWN SSID(ssid) DEVN(devn) R745DWRC R745DWCH R745CINT (R745DWRC - R745DWCH) / R745CINT
Subsystem Overview: Device Activity: CACHE MISSES WRITE RATE SEQUENTIAL CASMWS CADMWS SSID(ssid) DEVN(devn) R745DWSR R745DWSH R745CINT (R745DWSR - R745DWSH) / R745CINT
Subsystem Overview: Device Activity: CACHE MISSES WRITE RATE CFW DATA CASMWC CADMWC SSID(ssid) DEVN(devn) R745DWNR R745DWNH R745CINT (R745DWNR - R745DWNH) / R745CINT
Subsystem Overview: Device Activity: CACHE MISSES TRACKS RATE NORMAL CASMTN CADMTN SSID(ssid) DEVN(devn) R745DNTD R745CINT R745DNTD / R745CINT
Subsystem Overview: Device Activity: CACHE MISSES TRACKS RATE SEQUENTIAL CASMTS CADMTS SSID(ssid) DEVN(devn) R745DTC R745CINT R745DTC / R745CINT
Subsystem Overview: Device Activity: CACHE MISSES RATE TOTAL CASMT CADMT SSID(ssid) DEVN(devn) R745CINT TOTAL = R745DRCR + R745DRSR + R745DRNR + R745DWRC + R745DWSR + R745DWNR HITS = R745DCRH + R745DRSH + R745DNRH + R745DWCH + R745DWSH + R745DWNH (TOTAL - HITS) / R745CINT
Subsystem Overview: Device Activity: MISC (Miscellaneous) DFW BYPASS RATE CASDFWB CADDFWB SSID(ssid) DEVN(devn) R745DFWB R745CINT R745DFWB / R745CINT
Subsystem Overview: Device Activity: MISC (Miscellaneous) CFW BYPASS RATE CASCFWB CADCFWB SSID(ssid) DEVN(devn) R745DFWR R745CINT R745DFWR / R745CINT
Subsystem Overview: Device Activity: MISC (Miscellaneous) DFW INHIBIT RATE CASDFWI CADDFWI SSID(ssid) DEVN(devn) R745CINT TOTAL_ WRITES = R745DWRC + R745DWSR + R745DWNR FAST_ WRITES = R745DFWC + R745DFWS + R745DWNR (TOTAL_WRITES - FAST_WRITES) / R745CINT
Subsystem Overview: Device Activity: MISC (Miscellaneous) ASYNC(TRKS) RATE CASASYNC CADASYNC SSID(ssid) DEVN(devn) R745DCTD R745CINT R745DCTD / R745CINT
Subsystem Overview: Device Activity: NON CACHE I/O ICL RATE CASNCICL CADNCICL SSID(ssid) DEVN(devn) R745DICL R745CINT R745DICL / R745CINT
Subsystem Overview: Device Activity: NON CACHE I/O BYPASS RATE CASNCB CADNCB SSID(ssid) DEVN(devn) R745DBCR R745CINT R745DBCR / R745CINT
Subsystem Overview: Device Activity: NON CACHE I/O TOTAL RATE CASNCT CADNCT SSID(ssid) DEVN(devn) R745DICL R745DBCR R745CINT (R745DICL + R745DBCR) / R745CINT
Subsystem Overview: Device Activity: Host Adapter Activity - Average number of bytes per read request (normal+sequential+CFW)

CASBRR
CADBRR

 SSID(ssid) DEVN(devn)

R7451CT1
R745DRCR
R745DRSR
R745DRNR

 Sum(R7451CT1) / Sum(R745DRCR + R745DRSR + R745DRNR)
Subsystem Overview: Device Activity: Host Adapter Activity - Average number of bytes read per second

CASBRS
CADBRS

 SSID(ssid) DEVN(devn)

R7451CT1
R745CINT

 Sum(R7451CT1) / R745CINT
Subsystem Overview: Device Activity: Host Adapter Activity - Average number of bytes per write request (normal+sequential+CFW)

CASBWR
CADBWR

 SSID(ssid) DEVN(devn)

R7451CT2
R745DRCR
R745DRSR
R745DRNR

 Sum(R7451CT2) / Sum(R745DRCR + R745DRSR + R745DRNR)
Subsystem Overview: Device Activity: Host Adapter Activity - Average number of bytes written per second

CASBWS
CADBWS

 SSID(ssid) DEVN(devn)

R7451CT2
R745CINT

 Sum(R7451CT2) / R745CINT
Subsystem Overview: Device Activity: Disk Activity - Response time in milliseconds per read request

CASDRRT
CADDRRT

 SSID(ssid) DEVN(devn)

R7452PRT
R7452PRO

 Sum(R7452PRT) / Sum(R7452PRO)
Subsystem Overview: Device Activity: Disk Activity - Average number of bytes per read request

CASDRBR
CADDRBR

 SSID(ssid) DEVN(devn)

R7452PBR
R7452PRO

 Sum(R7452PBR) / Sum(R7452PRO)
Subsystem Overview: Device Activity: Disk Activity - Average number of bytes read per second

CASDRBS
CADDRBS

 SSID(ssid) DEVN(devn)

R7452PBR
R745CINT

 Sum(R7452PBR) / R745CINT
Subsystem Overview: Device Activity: Disk Activity - Response time in milliseconds per write request

CASDWRT
CADDWRT

 SSID(ssid) DEVN(devn)

R7452PWT
R7452PWO

 Sum(R7452PWT) / Sum(R7452PWO)
Subsystem Overview: Device Activity: Disk Activity - Average number of bytes per write request

CASDWBR
CADDWBR

 SSID(ssid) DEVN(devn)

R7452PBW
R7452PWO

 Sum(R7452PBW) / Sum(R7452PWO)
Subsystem Overview: Device Activity: Disk Activity - Average number of bytes written per second

CASDWBS
CADDWBS

 SSID(ssid) DEVN(devn)

R7452PBW
R745CINT

 Sum(R7452PBW) / R745CINT
Subsystem Overview: Device Activity: CFW % of all requests

CASCFWP
CADCFWP

 SSID(ssid) DEVN(devn)

R745DWNR
R745DRNR
R745DRCR
R745DRSR
R745DRNR
R745DWRC
R745DWSR
R745DWNR

 Sum(R745DWNR + R745DRNR) * 100 / Sum(R745DRCR + R745DRSR + R745DRNR + R745DWRC + R745DWSR + R745DWNR)
Device Overview *CACHE: Sequential Stage Rate

CASCSTGS

 SSID(ssid)

R745DWSR
R745DWSH
R745DRSR
R745DRSH
R745DWSR
R745CINT

 Sum((R745DWSR - R745DWSH) + (R745DRSR - R745DRSH) - R745DWSR + R745DFWS) / R745CINT
Device Overview: I/O RATE CADT DEVN(devn) R745CINT TOTAL = R745DRCR + R745DRSR + R745DRNR + R745DWRC + R745DWSR + R745DWNR + R745DICL + R745DBCR TOTAL / R745CINT
Device Overview: DASD I/O RATE STAGE CADSTG DEVN(devn) R745CINT TOTAL = R745DRCR + R745DRSR + R745DRNR + R745DWRC + R745DWSR + R745DWNR HITS = R745DCRH + R745DRSH + R745DNRH + R745DWCH + R745DWSH + R745DWNH DFW_INHIBIT = R745DWRC + R745DWSR + R745DWNR - R745DFWC - R745DFWS - R745DWNR CFW_BYPASS = R745DFWR DFW_BYPASS = R745DFWB (TOTAL - HITS - DFW_INHIBIT - CFW_BYPASS - DFW_BYPASS) / R745CINT
Device Activity: Sequential Stage Rate

CADSTGS

 SSID(ssid) DEVN(devn)

R745DWSR
R745DWSH
R745DRSR
R745DRSH
R745DWSR
R745CINT

 Sum((R745DWSR - R745DWSH) + (R745DRSR - R745DRSH) - R745DWSR + R745DFWS) / R745CINT
RAID rank read request rate CARRRT SSID(ssid) RRID(rrid) R7451RRQ R745CINT R7451RRQ / R745CINT
Average number of megabytes read with an I/O request CARRMB SSID(ssid) RRID(rrid) R7451SR R7451HSS R7451RRQ (R7451SR * R7451HSS) / R7451RRQ
Average number of megabytes read per second CARRMBS SSID(ssid) RRID(rrid) R7451SR R7451HSS R745CINT (R7451SR * R7451HSS) / R745CINT
Average response time of a read request CARRRTIM SSID(ssid) RRID(rrid) R7451RRT R7451RRQ R7451RRT / R7451RRQ
RAID rank write request rate CARWRT SSID(ssid) RRID(rrid) R7451WRQ R745CINT R7451WRQ / R745CINT
Average number of megabytes written with an I/O request CARWMB SSID(ssid) RRID(rrid) R7451SW R7451HSS R7451WRQ (R7451SW * R7451HSS) / R7451WRQ
Average number of megabytes written per second CARWMBS SSID(ssid) RRID(rrid) R7451SW R7451HSS R745CINT (R7451SW * R7451HSS) / R745CINT
Average response time of a write request CARWRTIM SSID(ssid) RRID(rrid) R7451WRT R7451WRQ R7451WRT / R7451WRQ
zHPF read I/O rate CASZHPFR CADZHPFR SSID(ssid) DEVN(devn) R7451CT5 R745CINT

Sum(R7451CT5) / R745CINT
R7451CT5 / R745CINT
zHPF write I/O rate CASZHPFW CADZHPFW SSID(ssid) DEVN(devn) R7451CT6 R745CINT

Sum(R7451CT6) / R745CINT
R7451CT6 / R745CINT
Global Mirror Collisions Sidefile count

CASGMCSF
CADGMCSF

SSID(ssid)
DEVN(devn)

 R7451GSF

Sum(R7451GSF)
R7451GSF
Global Mirror Collisions Send Synchronous count

CASGMCSS
CADGMCSS

SSID(ssid)
DEVN(devn)

 R7451GSS

Sum(R7451GSS)
R7451GSS
Table 2. Cache Activity - Conditions Based on SMF Record Type 74-5
Condition Categorie Condition Name Qualifier Source Algorithm
Device Overview: % I/O (total) *CACHE-OFF CASCOIO SSID(ssid) TOTAL = R745DRCR + R745DRSR + R745DRNR + R745DWRC + R745DWSR + R745DWNR + R745DICL + R745DBCR COTOT = TOTAL for CACHE-OFF     ALLTOT = TOTAL for ALL I/Os COTOT * 100 / ALLTOT
Device Overview: I/O RATE (total) *ALL *CACHE *CACHE-OFF CASAT CASCT CASOT SSID(ssid) R745CINT TOTAL = R745DRCR + R745DRSR + R745DRNR + R745DWRC + R745DWSR + R745DWNR + R745DICL + R745DBCR TOTAL / R745CINT
Device Overview: DASD I/O RATE STAGE *ALL *CACHE CASASTG CASCSTG SSID(ssid)

R745CINT
TOTAL =
R745DRCR +

R745DRSR + R745DRNR + R745DWRC + R745DWSR + R745DWNR       HITS = R745DCRH + R745DRSH +       R745DNRH + R745DWCH + R745DWSH + R745DWNH DFW_INHIBIT = R745DWRC + R745DWSR + R745DWNR - R745DFWC - R745DFWS - R745DWNR CFW_BYPASS = R745DFWR DFW_BYPASS = R745DFWB		 (TOTAL - HITS - DFW_INHIBIT - CFW_BYPASS - DFW_BYPASS) / R745CINT
Device Overview: Sequential Stage Rate *ALL *CACHE

CASASTGS
CASCSTGS

 SSID(ssid)

R745CINT
R745DFWS
TOTAL_SEQ =
R745DWSR +
R745DRSR
HIT_SEQ =
R745DWSH +
R745DRSH

 Sum(TOTAL_SEQ - HIT_SEQ - R745DWSR + R745DFWS) / R745CINT
Parent topic: Overview and exception conditions