An enhanced version of memcached's memcached-tool script (Reference: https://github.com/memcached/memcached/blob/master/scripts/memcached-tool)
It shows memcached metrics per slab and a few global metrics.
Yes... but memcached-tool-ng shows also the memory efficiency per slab (allocated pages vs items size) and the global node efficiency.
Exactly the same way as memcached-tool:
./memcached-tool-ng ip_address_of_memcached