Performance threshold task Performance Manager Performance database

You can use Performance Manager to set performance thresholds for each storage device type. Setting thresholds for certain criteria allows Performance Manager to notify you when a certain threshold has been crossed, which enables you to take action before a critical event occurs.

Multiple Device Manager (MDM) provides an interface you can use to create a performance data-collection task. You can set the following thresholds when you are creating a performance data-collection task.

Note:Note: Not all of the listed thresholds are displayed for a selected device. The thresholds are device dependent.
Threshold Name
Description
Disk Utilization
Percent of time busy
Percent of sequential I/Os
Percent of sequential I/Os
Nonvolatile Storage
Percent of time full
Average cache holding time
Measured in seconds
I/O rate
Total number of I/O requests
VDisk I/O rate
Total number of virtual disk I/Os for each I/O group
VDisk bytes/second
Virtual disk bytes per second for each I/O group
MDisk I/O rate
Total number of managed disk I/Os for each managed disk group
MDisk bytes/second
For each managed disk group
Data transaction (count/second)
Total server-level data transaction rate
Data transaction for updates (count/second)
Total server-level data transaction rate for updates to system objects
Related topics Performance Manager Performance database

(C) Copyright International Business Machines Corporation 2004