The SHARED PUBSET report contains monitored data on I/O operations to disk devices of shared pubsets for a computer network.
Report output
The REPORT SHARED_PUBSET statement is used to request the output of the SHARED PUBSET report.
The monitored data under SERVICETIME is only output when the SM2 administrator
uses the SET-SAMPLING-DEVICE-PARAMETERS statement to define the monitoring of the service times and
uses the statement START-MEASUREMENT-PROGRAM TYPE=*SAMPLING-DEVICE to start monitoring.
When the SM2 subsystem is started, the SAMPLING-DEVICE monitoring program is started without the service times being recorded.
The privileged user can use the SELECT-HOSTS statement to select the hosts whose monitored data is to be displayed in the report.
The header contains information on the local host (if this is selected) or on first host for which valid data is found. If valid information cannot be found on a particular host, the string SOME DATA MISSED appears in the second line.
Only the monitored data of the local host is displayed to the nonprivileged user.
For parallel access volumes (PAV), the following applies:
Only basic devices are output. The monitored data refers to the basic device and the assigned alias devices (summation and averaging).
For basic devices the average number of assigned alias devices is output. If a device is not a basic device, spaces are output.
Overflow screens may be requested for this report.
The monitored data output is sorted in accordance with the number of I/O operations.
HOST0001 SM2 SHARED PUBSET CYCLE: 60 S SAMPLES: 75 <date> <time>
MN |VOLUME| Q |RSC| READ | WRITE | SERVICETIME
| |LGTH | |(IO/S) | (KB/S) |(IO/S) | (KB/S) | HW | SW
----+------+-----+---+-------+---------+-------+---------+-------+-------
D114|CVS8.2| 0.6|0.0| 32.2| 1045.4| 395.8| 797.1| 1.2| 1.2
D101|CVS3.3| 0.1|0.1| 106.2| 1988.3| 0.0| 0.0| |
D179|1DQM.4| 0.0|0.0| 71.3| 285.2| 0.0| 0.0| |
D32F|2RZV.F| 0.0|0.0| 24.8| 589.2| 0.0| 0.0| 0.7| 0.7
D2F9|NVS1.3| 0.0|0.0| 20.9| 53.4| 2.2| 6.6| 0.4| 0.4
D434|QVS2.0| 0.0| | 0.0| 0.0| 20.0| 40.0| |
D2F6|NVS1.0| 0.0|0.0| 2.0| 7.3| 13.8| 55.4| 1.2| 1.2
D2F5|1CVN.0| 0.0|0.0| 0.3| 2.1| 12.1| 47.5| 1.4| 1.4
D112|CVS8.0| 0.0|0.0| 0.7| 4.0| 8.2| 32.9| 1.3| 1.3
D2FA|NVS1.4| 0.0|0.0| 2.3| 5.2| 6.3| 18.8| 1.1| 1.1
D0FC|CVS2.2| 0.0|0.0| 7.8| 204.1| 0.0| 0.0| 0.7| 0.7
D113|CVS8.1| 0.0|0.0| 0.3| 17.5| 3.3| 13.2| 1.3| 1.3
D110|CVS7.2| 0.0|0.0| 0.0| 0.0| 3.5| 21.1| 1.5| 1.5
Monitoring information
The values correspond to those of the DEVICE DISK report and form the sum of the values from the individual hosts.
SM2 cannot automatically determine the percentage utilization of the disks (as in the DEVICE DISK report). Each host recognizes only its own accesses to the disk. The disk is already considered active when the I/O chaining starts, even if the system still has to wait until another host has completed its access. This can cause a dilation of the local utilization, which depends on the level of the local or remote loads and their distribution over time.
MN | Mnemonic name of the disk device |
VOLUME | VSN of the disk device or spaces (e.g. if the disk belongs to a pubset that has not been imported) |
Q LGTH | Average length of the device queue including the jobs that are currently being dealt with |
RSC | Average number of parallel processed RSC IOs (x86 servers) |
READ | Number of input operations or number of kB transferred per second |
WRITE | Number of output operations or number of kB transferred per second |
SERVICETIME | |
HW (MS) | Average hardware service time in milliseconds |
SW (MS) | Average software service time (including hardware service time) in milliseconds |