Volume History Snapshot Report
For a more complete description of the reports that can be generated from the PERF_VOL verb, see Volume-History-Report.
Data source | Performance data collector |
|---|---|
Fields shown in Initial display | (VOLSER); (DATE); (STIME); DEVTYPE; DEVNUM; PERCBUSY; IOSSEC; RESPTIME; IOSQTIME; PENDTIME; DISCTIME; CONNTIME; DBDELAY; DPBDELAY; CBDELAY; RTIMEPER; SMSGROUP; READSEC; READPERC; READHITP; WRTESEC |
Report name verb | PERF_VOL |
Member name | SRMBR032 |
See the Report option keywords and report matrix for performance reports for a list of the report option keywords that are available on this report.
The following table presents a field list for the Volume History Snapshot Report.
Field list for the Volume History Snapshot Report
Column heading | Field name | Description |
|---|---|---|
Busy % | PERCBUSY | The percentage of time the resource was busy. |
Cache Act | CACHEACT | The cache fast write active indicator. |
Cfw/sec | CFWIOSEC | The number of cache fast write operations issued per second. |
Cfw Hit% | CFWHITP | The hit percentage for cache fast write operations. |
Cfw% | CFWPERC | The percentage of I/Os that were cache fast writes. |
Conn Time | CONNTIME | The average connect time in milliseconds. |
CU Busy Delay | CBDELAY | The average control unit busy delay in milliseconds. |
Dev Busy Delay | DBDELAY | The average device busy delay in milliseconds. |
Dev Num | DEVNUM | The device number. |
Dev Type | DEVTYPE | The type of device. This field might contain one of the following values:
|
DFW % | DFWPERC | The percentage of I/Os that were DASD fast writes. |
DFW/sec | DFWIOSEC | The number of DASD fast write operations issued per second. |
DFW Act | DFWACT | Device fast write active indicator. |
DFW Hit% | DFWHITP | The hit percentage for DASD fast write operations. |
Disc Time | DISCTIME | The average disconnect time in milliseconds. |
DP Busy Delay | DPBDELAY | The average director port busy delay in milliseconds. |
I/Os sec | IOSSEC | The number of I/O operations issued per second. |
Intv Strt Date | DATE | The summarization interval starting date. |
Intv Strt Time | STIME | The summarization interval starting time. |
IOSQ time | IOSQTIME | The average IOS queuing time in milliseconds. |
Norm Read % | NRMRPERC | The percentage of I/Os that were normal reads. |
Norm Read Hit% | NORMRDHP | The hit percentage for normal read operations. |
Norm Read/sec | NRIOSEC | The number of normal read operations issued per second. |
Norm Write % | NRMWPERC | The percentage of I/Os that were normal writes. |
Norm Write Hit % | NORMWRHP | The hit percentage of I/Os that were normal writes. |
Norm Write/sec | NWIOSEC | The number of normal write operations issued per second. |
Pend Time | PENDTIME | The average pending time in milliseconds. |
Phy Vol Box | PVBOX | The box number of the physical volume this volume is associated with. |
Phy Vol Dev | PVDEV | The device number of this volume’s associated physical volume. |
Phy Vol Dir | PVDIR | The director number of the physical volume this volume is associated with. |
Phy Vol Scsi | PVSCSI | The SCSI path number of the physical volume that this volume is associated with. |
Read % | READPERC | The percentage of I/O operations that were reads. |
Read Hit% | READHITP | The hit percentage of read operations. |
Read/sec | READSEC | The number of read operations issued per second. |
Resp Time | RESPTIME | The I/O response time reported in milliseconds. |
Rsrv % | RTIMEPER | The percentage of time the device was marked as reserved. |
Seq Read % | SEQRPERC | The percentage of I/Os that were sequential reads. |
Seq Read Hit% | SEQRDHP | The hit percentage of I/Os that were sequential reads. |
Seq Read/sec | SRIOSEC | The number of sequential read operations per second. |
Seq Write % | SEQWPERC | The percentage of sequential read operations per second. |
Seq Write Hit% | SEQWRHP | The hit percentage of I/Os that were sequential writes. |
Seq Write/sec | SWIOSEC | The number of write operations issued per second. |
SMS Group | SMSGROUP | The SMS storage group to which the volume belongs. |
VolSer | VOLSER | The serial number of the volume containing the data set. |
Write % | WRTEPERC | The percentage of I/O operations that were writes. |
Write Hit% | WRTEHITP | The hit percentage of write operations. |
Write/sec | WRTESEC | The number of write operations issued per second. |
The following figure provides a sample of the Volume History Snapshot Report.
Volume History Snapshot Report example
BMC Software, Inc. Generated:07/15/2004(2004.196)@15:50
VolSer Dev Dev Busy I/Os Resp IOSQ Pend Disc Conn Dev Busy DP Busy CU Busy RSRV SMS Read Read Read Write
Type Num % sec Time Time Time Time Time Delay Delay Delay % Group /sec % Hit% /sec
--------------------------------------------------------------------------------------------------------------------------------
BAB200 3380 8019 0.0 0.00 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.71 96.3 91.8 0.03
BAB201 3380 801A 0.0 0.00 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.73 96.3 93.3 0.03
BAB306 3390 8053 0.0 0.00 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.47 94.2 98.6 0.09
BAB307 3390 8054 0.1 0.00 5.9 0.2 0.2 0.0 5.5 0.0 0.0 0.0 0.0 2.02 92.8 95.1 0.16
BAB308 3390 8055 0.0 0.00 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.59 95.5 95.7 0.03
BAB309 3390 8056 0.0 0.01 15.2 1.5 0.1 11.6 1.9 0.0 0.0 0.0 0.0 2.19 99.5 97.9 0.01
BAB310 3390 8057 0.0 0.00 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.00 80.5 96.6 0.48
BAB311 3390 8058 0.0 0.00 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6.24 99.4 91.5 0.03
BAB314 3390 805B 0.0 0.00 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.53 93.8 91.2 0.17
BAB315 3390 805C 0.0 0.00 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.77 99.7 98.1 0.01
BAB316 3390 805D 0.1 0.00 0.0 0.0 0.0 0.0 0.0 1.9 0.0 0.0 0.0 3.52 75.1 96.8 1.16
************************************************** End of Volume Snapshot Report ************************************************