This document explains how to calculate the number of SSL proxied sessions for a dataplane on a Palo Alto Networks device.
Use this command to show the software buffer pool for Proxy sessions:
> debug dataplane pool statistics | match proxy
See this example:
Proxy Session : 7055/7936 0x80000000b0dc7be0
The total number of ssl sessions proxied would be 7936 – 7055 = 881.
Note: Without an SSL session in an environment, the counter should show : 7936/7936.