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AIX Version 4.3 System Management Guide: Operating System and Devices

Operating System and Devices"> Performance Measurement and Tuning for BSD 4.3 System Managers
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AIX Version 4.3 System Management Guide: Operating System and Devices

Performance Measurement and Tuning for BSD 4.3 System Managers

All devices on AIX have attributes associated with them. To view device attributes, enter:

lsattr -E -l DeviceName

Any attributes with the value True can be modified with the command:

chdev -l DeviceName -a attr=value
Attention: Changing device parameters incorrectly can damage your system.

By default, the maximum number of processes per user is 40. The default value may be too low for users who have many windows open simultaneously. The following command can be used to change the value systemwide:

hdev -l sys0 -a maxuproc=100

This example changes the maximum number to 100. The new value is set once the system has rebooted.

To view the current setting of this and other system attributes type:

lsattr -E -l sys0

The maxmbuf attribute is not currently supported by the mbuf services.

AIX supports the vmstat and iostat commands, but not the systat command or load averages.


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