3.22 Devices Statistics

The metrics in this category provide statistical information relating to devices.

Collection Frequency - Every 30 minutes.

Table 3-26 Device Statistics Metrics

Metric Description and User Action

For Release 6

Number of APF device reads from device

For Release 7

APF read rate from the device (per sec)

For System Monitoring Plug-In for Sybase Adaptive Server Enterprise (ASE) Release 6 (1.0.1.0.0)

Number of APF reads from the device since last collection.

For System Monitoring Plug-In for Sybase Adaptive Server Enterprise (ASE) Release 7 (1.1.1.0.0)

Rate at which the APF reads were made from the device since last collection, that is, the number of APF reads from the device since last collection divided by the elapsed time between two collections.

For Release 6

Number of IO requests

For Release 7

I/O request rate to a mirrored device [if mirrored] (per sec)

For System Monitoring Plug-In for Sybase Adaptive Server Enterprise (ASE) Release 6 (1.0.1.0.0)

Number of IO requests since last collection.

For System Monitoring Plug-In for Sybase Adaptive Server Enterprise (ASE) Release 7 (1.1.1.0.0)

Rate at which the IO requests were made since last collection, that is, the number of IO requests since last collection divided by the elapsed time between two collections.

For Release 6

Number of force task waits for IO Synchronization

For Release 7

Forced task waits rate for IO sync. to mirrored device (per sec)

For System Monitoring Plug-In for Sybase Adaptive Server Enterprise (ASE) Release 6 (1.0.1.0.0)

Number of tasks forced to wait for synchronization of an I/O request since last collection.

For System Monitoring Plug-In for Sybase Adaptive Server Enterprise (ASE) Release 7 (1.1.1.0.0)

Rate at which the tasks were forced to wait for synchronization of an I/O request since last collection, that is, the number of tasks forced to wait for synchronization of an I/O request since last collection divided by the elapsed time between two collections.

IO Time (ms)

Total amount of time (in milliseconds) spent waiting for I/O requests to be satisfied since last collection.

For Release 6

Number of reads from device (excluding APF)

For Release 7

Read rate from the device [excluding APF] (per sec)

For System Monitoring Plug-In for Sybase Adaptive Server Enterprise (ASE) Release 6 (1.0.1.0.0)

Number of reads from the device (excluding APF).

For System Monitoring Plug-In for Sybase Adaptive Server Enterprise (ASE) Release 7 (1.1.1.0.0)

Rate at which the reads were made from the device since last collection, that is, the number of reads from device since last collection divided by the elapsed time between two collections.

For Release 6

Number of writes to device

For Release 7

Write rate to the device (per sec)

For System Monitoring Plug-In for Sybase Adaptive Server Enterprise (ASE) Release 6 (1.0.1.0.0)

Number of writes to the device since last collection.

For System Monitoring Plug-In for Sybase Adaptive Server Enterprise (ASE) Release 7 (1.1.1.0.0)

Rate at which the writes were made to the device since last collection, that is, the number of writes to the device since last collection divided by the elapsed time between two collections.

Device Logical Name

Logical name of the device.

Full Hierarchic file name of device

Full hierarchial file name of the device.