The envmond daemon has been modified to allow it to use EVM events instead of the hwmgr command to determine the environmental status of the system. On systems with many sensors, this improvement may reduce or eliminate previously seen performance problems.
By default, envmond is configured to use the hwmgr command (the poll method) for environmental monitoring. To configure envmond to use EVM events, set the envconfig ENVMON_MODE variable to event as follows:
# envconfig -c ENVMON_MODE=event |
Because threshold values in event mode cannot be set to individual sensor, EVM events are generated only when existing hardware thresholds are exceeded. If you need to monitor individual sensors at thresholds different from the hardware thresholds, use the new envconfig ENVMON_POLL_SENSORS variable in conjunction with the hwmgr. For example:
# envconfig -c ENVMON_POLL_SENSORS="58:59" |
To then set the warning threshold for the sensor with ID 58, to 50.0 degrees Celsius, enter the following command:
# /sbin/hwmgr -set attr -id 58 -a warning_threshold=500 |
To set the fault action for the sensor with ID 58 to noshutdown:
# /sbin/hwmgr -set attr -id 58 -a fault_action=noshutdown |
By specifying this set of commands, envmond uses the poll method for sensors 58 and 59 and the EVM event method for the rest of the sensors.
For more information, see the revised envconfig(8) reference page that is installed with this kit.
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