Using onstat -g to monitor I/O utilization

You can use some specific onstat -g command arguments to monitor disk IO.

Use the following onstat -g command arguments to monitor disk I/O utilization.

onstat -g Argument Description
iof Displays asynchronous I/O statistics by chunk or file

This argument is similar to the onstat -d, except that information about nonchunk files also appears. This argument displays information about temporary dbspaces and sort files.

iog Displays asynchronous I/O global information
ioq Displays asynchronous I/O queuing statistics
iov Displays asynchronous I/O statistics by virtual processor

For a detailed case study that uses various onstat outputs, see Case studies and examples.


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