memcached-tool1
Stats and management tool for memcached
Usage
memcached-tool {<host
[:port] | /path/to/socket>
[mode]}
Overview
memcached-tool is a Perl script used to print statistics from a running memcached instance. The first parameter specifies the address of the daemon either by a hostname, optionally followed by the port number (the default is 11211), or a path to UNIX domain socket. The second parameter specifies the mode in which the tool should run.
Modes
display-
Print slab class statistics. This is the default mode if no mode is specified. The printed columns are:
- #
-
Number of the slab class.
Item_Size-
The amount of space each chunk uses. One item uses one chunk of the appropriate size.
Max_age-
Age of the oldest item in the LRU.
Pages-
Total number of pages allocated to the slab class.
Count-
Number of items presently stored in this class. Expired items are not automatically excluded.
Full?-
Yes if there are no free chunks at the end of the last allocated page.
Evicted-
Number of times an item had to be evicted from the LRU before it expired.
Evict_Time-
Seconds since the last access for the most recent item evicted from this class.
- OOM
-
Number of times the underlying slab class was unable to store a new item.
stats-
Print general-purpose statistics of the daemon. Each line contains the name of the statistic and its value.
- dump [limit]
-
Make a partial dump of the cache written in the add statements of the memcached protocol. If
limitis given and is a strictly positive integer, then the dump is limited to that number of items.