Lsass 30% CPU on RDS 2012 R2

[Ricardo.Garrido]

Hi everyone.

I'm facing an issue where one of four Session Hosts in a RD Farm has an lsass process cpu utilization that, every 10 seconds:

- goes from 0% to 40% in about 5 seconds

- keeps ~40% cpu utilization for a few seconds seconds before going back to 0%

Analyzing with PerfMon and WPerfAnalyzer, and comparing with the other Session Hosts, i found that:

- this specific Session Host performs (or waits for) the bellow operations 50 to 100 times more than the reference healthy host:

-- Sorry about the image size. Please zoom in --





CPU utilization:



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