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SM2 monitoring program SM2 monitored variables
Files (continued)
File access statistics Number of PAM-WAIT, PAM-CHECK-READ, PAM-WRITE
operations and input/output operations per second for one file.
Distribution of input/output operations to files for selected disks.
File access times Average access time in milliseconds for each input/output.
IOs
Number of input/output operations Number of input/output operations per second.
Number of paging input/output
operations
Channel utilization and channel
transmission rates Number of input/output operations or transferred PAM blocks
per channel.
Device utilization and transmission
rates Device utilization in % without/because of paging activities.
Length of device queues Number of input/output requests addressed to a device.
Duration of input/output operations Hardware operating time between SDV command and channel
interruption for input/output operations of a specific device,
measured in milliseconds.
Access distribution to cylinders/
PAM blocks of disks Cylinder number/PAM block addressed for input/output
operation.
Number of input/output operations Number of input/output operations per second.
Communication
Response times Average time in seconds between the receipt of a message on
the system and the sending of a response to the application.
Transaction times Average time in seconds between input and the last output.
Thinking time Time between an output and the resulting subsequent input.
Wait time Average wait time for incoming messages before being
processed by the application.
Transaction rate Number of transactions per second.
Length of transaction message Average length in bytes of input/output messages for selected
connection sets.
Number of input/output operations
of network devices Number of read/write accesses per second, and the number of
bytes transferred.
Network transmission rate Transmission rate for all TCP/IP connections; data transfer
information for specific connections.
Monitored variable Description
Table 2: SM2 monitored variables