Start of Content Area

Object documentation NUMAIOVPS (Informix)  Locate the document in its SAP Library structure

Definition

The NUMAIOVPS parameter in the Informix ONCONFIG file specifies the number of AIO virtual processors (AIO VPs) to be started when the database is started. To set this parameter correctly, you need to consider whether kernel-asynchronous I/O (KAIO) is implemented on your system.

Use

For up-to-date recommendations, see SAP Note 41360.

You can use the database monitor overview to check whether KAIO is on or off. If KAIO is on, the Kaio threads field has a value greater than zero.

 

See also:

Monitoring the I/O Subsystem (Informix)