The efficiency drop alerts audit is available under the activity tab in the diagnostic and shows the current grade from the data obtained yesterday and a small historical chart for the performance of the last week. The grade is determined depending on how many alerts you got. The more alerts per worker, the lower the grade.
Alerts are one of the mechanisms that are helping you to keep your mining operation in good health. However, receiving too many alerts just isn't efficient. You probably won't even read them since there are too many of them and it will be very hard to examine your 24h activity log. This is why it is OK to receive some alerts, but not too many of them.
Efficiency is a ratio between accepted and total (accepted + rejected) shares. The lower it is, the less you will earn from mining. For example, if your mining efficiency is 50%, it doesn't matter if you mine with full hashrate - you will lose 50% of submitted shares. This is the reason why we recommend having efficiency at a minimum of 98%.
Efficiency drops are compared through the worker's statistics data and checked every 10 minutes. If the most recently detected efficiency is lower than 90% an alert will be sent.
Getting too many efficiency drop alerts means that your efficiency is frequently rising and falling on the 90% limit. This could be due to unstable overclocking settings or troubles at the pool's side. If your overclocking settings are stable, then try changing the pool to see if this solves the issues. You can find a pool with the lowest latency with our Sonar software.
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