Security Kernel Users / Call Object Users

We are currently running 2 Security Kernels and 5 Call object Kernels:

Under Runtime Metrics:
Security Kernel Users: 49
Call Object Users: 16

Under Process Detail, one Security Kernel has 29 Connections, the other 20.

Is there a guideline we should be concerned about if Security Kernel Users reaches a specific number? Say 80, 100, 150?

Is there a guideline we should be concerned about if CallObject Users reaches a specific number?

The security kernel metrics has a long history still showing disconnected users so I wouldn't be concerned about that number too much. The number of Call Object User connections will truly show how many users/connections are currently active on your system. The number of call object kernels depends on how many threads you have setup assuming you have your Call Object kernels setup for multithreading. Typically you should aim for one thread per user for your peak load. So if you have five threads per kernel and you have 5 kernels running you can support 25 active users, which is enough for your 16 people that show currently connected. Two security kernels for your load is plenty.

Thanks, yes we are setup for Multithreading. We were using the IBM i Performance Tuning guide but trying to adjust for dcLINK. With a low user count we set it at the minimum of 20 and an increment of 1.