Function - Return statistics for a host.
[in host-control send right]
The control port for the host for which
information is to be obtained.
The type of statistics desired.
System loading statistics. The returned structure is
Virtual memory statistics. The returned structure is
Statistics about the specified host.
On input, the maximum size of the buffer; on output, the
size returned (in natural-sized units).
The host_statistics function returns scheduling and
virtual memory statistics
concerning the host as specified by flavor.
Only generic errors apply.