onstat -g rah command: Print read-ahead request statistics

Use the onstat -g rah command to display information about read-ahead requests.

Syntax:

Read syntax diagramSkip visual syntax diagram onstat  -grah generalqueuesdaemonsrecoverypartitionsthreads

Example output

The output for this command is divided into six sections:

  • Read Ahead
  • Active Read Ahead Queues
  • Active Read Ahead Daemons
  • Recovery ReadAhead Statistics
  • Partition ReadAhead Statistics
  • Thread ReadAhead Statistics
Running the command without any arguments will display all six sections by default. To display the information for only one section, add the section name, as in: 
onstat -g rah partitions
onstat -g rah threads