Concurrent connections to an Exchange 2013 CAS server

Running Exchange 2013 CU6 + Windows Server 2012 Standard

Is there a script I can run to show me the number of concurrent connections to an Exchange 2013 CAS server? Recently we have been maxing out on CPU usage and wondered if the was a way to see how many users were connected at that time... Possibly for all IIS services Id imagine, OWA, ActiveSync, Outlook etc... Seems like its the Microsoft Exchange RPC Client Access service that causes this issue.

Thanks in advance.
Christian HansUndecided... Asked:
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Mauro CazabonnetSenior .NET Software EngineerCommented:
Scott CSenior EngineerCommented:
Use for a period of time... 1 -2 hours.

You won't have to loop the script and you can run it for 24 hrs. if needed.

You can also run the resulting log file through PAL for a 60,000 ft. view.

Counters to look at:

Process/Thread Count/Microsoft.ExchangeRpcClientAccess.Service

Look at object MSExchange RpcClientAccess
and counters:  RPC Averaged Latency and RPC Requests.

User impact will start at RPC Requests around 300.

500 means server is done, no more connections, users start getting disconnected and slow @ 300.

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