AIX operating systemsLinux operating systemsWindows operating systems

Effect of the status refresh interval on performance

In the Operations Center, the status refresh interval is the number of minutes between status collection refreshes. Changing the default value of this interval can affect the performance of the Operations Center and the servers that are using status monitoring.

You can set this interval on the Settings page of the Operations Center or by issuing the SET STATUSREFRESHINTERVAL command on each hub or spoke server. Use the same interval on the hub and spoke servers. Using different intervals can reduce the accuracy of the information that is shown in the Operations Center.

Effect of decreasing the interval

If you decrease the interval to get more frequent refreshes of collected data, more data is processed and maintained, which uses more space in the server database. More frequent refreshes can also mean higher processor usage. The disks where the server database is located might also require higher input/output operations per second (IOPS).

If you decrease the interval by half, the server database and the archive log space that is required for status monitoring is doubled.

Also, do not decrease the interval to less than 5 minutes. An interval of less than 5 minutes can cause the following issues:

  • Operations Center data that is supposed to be refreshed after the defined interval takes a longer time to be refreshed.
  • Operations Center data that is supposed to be refreshed almost immediately when a related change occurs in the storage environment also takes a longer time to be refreshed.

Effect of increasing the interval

If you increase the interval to get less frequent refreshes of collected data, resource requirements are reduced. However, the data that is shown in some Operations Center views might not be current.

If you double the interval, the server database and the archive log space that is required for status monitoring is reduced by half.

If a hub server is connected to spoke servers over a network with high latency, consider increasing the interval to reduce the data that is sent over the network for status monitoring.