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Very High Increase in CPU activity after Update Microsoft Defender for Identity sensor
All our servers that are running this sensor (DCs, Certificate servers, AD Connect servers) showed a massive increase in average CPU utilization from virtually straight after the sensor was automatic...
Hi,
Ack on that.
We spotted the issue. in some sensors a thread might hog between 0 to 100% of a single core.
We are working on a fix.
Note that the sensor has a job limiter which should make sure to leave at least 15% of CPU free at all times,
It will limit CPU usage down to 10% of total machine if needed (with the price of dropping traffic) , so if you are really hitting 100% CPU please check if there is something else that is also consuming the CPU which was not expected.
We are seeing this issue too, across multiple customers and multiple Server OS's all with the same agent version of 2.254.19112.470