Overclocking
It is best to have your rig stable for 24 hours before attempting overclocks.
Follow the instructions on http://ethosdistro.com/pool.txt to set overclocks globally, or for individual rigs.
After you set overclocks, you can either reboot, and the rig will take the new config and apply the new clocks automatically, or you can run putconf && ethos-overclock, and your rig will apply the overclocks during the mining session.
Use show miner to watch the miner log.
NOTE: If your rig crashes or hangs after setting overclocks, follow the below instructions:
Reduce all overclocks to stock settings and reboot.
Monitor the rig for 24 hours to make sure it does not crash again.
If required, set a less aggressive overclock and continue to monitor the rig.