Avago Technologies 3ware SAS 9750-16i4e - Manual (Page 71)

Controller Object Commands
www.lsi.com/channel/products 63
You can see whether the Performance Monitor is currently running and also
see a statistics summary by using the command “/cx show dpmstat
[type=inst|ra|ext]” on page 36.
For a description of each of the statistics that can be gathered and viewed, see
“/cx/px show dpmstat type=inst|ra|lct|histdata|ext” on page 98.
DPM is disabled by default since there is overhead in maintaining the
statistics. DPM is also disabled following a reboot or powerup.
Note that turning off DPM does not clear the statistical data that has been
recorded. To clear the data, use the command “/cx/px set dpmstat=clear
[type=ra|lct|ext]” on page 101.
For more information, see “Drive Performance Monitoring” in the 3ware
SATA+SAS RAID Controller Card Software User Guide, Version 10.2.
Example:
//localhost> /c0 set dpmstat=off
Setting Drive Performance Monitoring on /c0 to [off]... Done.
/cx set rebuild=enable|disable|1..5
The /cx set rebuild command enables or disables the Rebuild Task Schedule
defined for controller /cx and sets the priority of rebuild versus I/O operations.
When the schedule is enabled, rebuild tasks only run during the time slots
scheduled for rebuilds. If a rebuild is taking place when the schedule is
enabled, it pauses until the next scheduled time.
The priority of rebuild versus I/O operations is specified with [1..5], where 5
is more resources and 1 the least. Setting the value to 5 gives maximum
processing time to rebuilds rather than I/O. Setting the value to 1 gives
maximum processing time to I/O rather than rebuilds.
5 = fastest rebuild; slowest I/O
4 = faster rebuild; slower I/O
3 = balanced between rebuild and I/O
2 = faster I/O; slower rebuild
1 = fastest I/O; slowest rebuild
/cx set rebuildmode=
The /cx set rebuildmode command sets the rebuild mode. The rebuild mode
has two settings: Adaptive and Low Latency.
Rebuild mode works with the rebuild task rate (see “/cx set
rebuildrate=<1..5>” on page 64).