SMF 42-6 DASD data set level I/O statistics
- 28 Feb 2024
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SMF 42-6 DASD data set level I/O statistics
- Updated on 28 Feb 2024
- 2 Minutes to read
- Contributors
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Introduction
Fields
Stored in smsData
| SMF Field | DB Column name | Description | Unit |
|---|---|---|---|
| recType | Value is always 042 | ||
| SMF42PTS | startTime | Interval Start or OPEN time of day. This is zero if not available | |
| SMF42DTE/TME | endTime | Date when the record was moved into the SMF buffer | |
| seconds | Time between start and end datetime | second | |
| SMF42SID | sid | System identification | |
| S42DSN | dsname | Data set name | |
| S42DSVOL | volser | Volume serial number | |
| S42JDRSD/RST | jobRdrTime | Date reader recognized the JOB card for this job | |
| S42JDJNM | jobName | Job name | |
| S42JDUID | racfUser | User-defined identification field | |
| S42JDPGN | pgn | Job performance group number | |
| S42DSSC | smsStorCls | Storage class name | |
| S42JDWSC | wlmClass | Workload Manager (WLM) Service Class Name | |
| S42JDWLD | wlmWorkload | Workload Manager (WLM) workload name | |
| S42DSFL1 | dsDescrFlag | Data set descriptor flag | |
| S42DSCOD | entryFlag | Entry descriptor flag | |
| S42DSDEV | devnum | Device number | |
| SMF42SSI | ssid | Subsystem identification | |
| S42JDCOD | subType |
| |
| S42DSTYP | dsType | Data set type | |
| S42DSBSZ | blkSize | Block size. For concatenated data sets, this data is taken from the first data set | |
| useCount | |||
| S42DSTRP | stripes | Number of stripes | |
| S42DSION | totIo | Total number of I/Os | |
| S42DSRDT | totRead | Total number of read operations | |
| S42DSCND | cacheIo | Number of cache candidates | |
| S42DSSEQ | seqIo | Number of sequential I/O operations | |
| S42DSWCN | writeIo | Number of write candidates | |
| S42DSRLC | rlsIo | Number of record level cache I/O operations | |
| S42DSICL | inhibitIo | Number of inhibit cache load I/O operations | |
| S42DSSHTS | cacheHits | Number of cache hits | |
| S42DSWHI | writeHits | Number of write hits | |
| S42AMSRB | seqReadBlk | Sequential read: number of blocks | |
| S42AMDRB | randReadBlk | Direct read: number of blocks | |
| S42AMSWB | seqWriteBlk | Sequential write: number of blocks | |
| S42AMDWB | randWriteBlk | Direct write: number of blocks | |
| S42AMZRB | dirRead | Number of directory reads | |
| S42AMZWB | dirWrite | Number of directory writes | |
| avgRespTime | second | ||
| avgConnTime | second | ||
| avgPendTime | second | ||
| avgDiscTime | second | ||
| avgQueueTime | second | ||
| avgActvTime | second | ||
| avgReadDiscTm | second | ||
| S42DSMXR | maxRespTime | Maximum data set I/O response time | second |
| S42DSMXS | maxServTime | Service time associated with maximum I/O response time | second |
| S42AMSRR | seqReadDly | Sequential read: I/O delay | second |
| S42AMDRR | randReadDly | Direct read: total I/O delay | second |
| S42AMSWR | seqWriteDly | Sequential write: I/O delay | second |
| S42AMDWR | randWriteDly | Direct write: total I/O delay | second |
| S42AMZRR | dirReadDly | Directory read: I/O delay | second |
| S42AMZWR | dirWriteDly | Directory write: I/O delay | second |
| S42DSCOD | isOpen | Bit 0 | |
| S42JDCOD | isClose | True if subType == 0 | |
| S42JDCOD | isInterval | True if subType != 0 | |
| S42DSTYP | isPs | True if dsType == 1 | |
| S42DSTYP | isPds | True if dsType == 2 | |
| S42DSTYP | isPdse | True if dsType == 3 | |
| S42DSTYP | isDa | True if dsType == 4 | |
| S42DSTYP | isHfs | True if dsType == 10 | |
| S42DSTYP | isVsam | True if 16 <= dsType <= 22 | |
| actionId |