There are a couple of ways to recieve status about Spinner.

Spinner Global status

On the configuration top page, there is a choice called Spinner server status. If you unfold it, you will see these nodes:
Process Status
Status about the Spinner server process, collected using the "getrusage()" system call or via "/proc/", the process file system.

NOTE: If you use Solaris and change UID, the server process won't be allowed to recieve this information!

Pipe system status
Here you can see the number of open outputs and inputs, the number of mmapped files (and their total size) and more.

Shared string status
Status about the shared string hash table.

Host names
The number of hostname lookup processes and the size of the hostname lookup queue.

Cache System
Information about Spinner's cache system.

Virtual Server Status

If you focus on or unfold a virtual server, you will see a node called Status and debug info. If you unfold it, you will get some status about this virtual server, like sent data and number of requests.