NAME

       pmdamemcache - memcache performance metrics domain agent (PMDA)

DESCRIPTION

       This PMDA extracts performance data from memcached, a distributed memory caching daemon commonly used to
       improve web serving performance.  A farm of memcached processes over multiple servers can be utilised by
       a single web application, increasing the total available object cache size, and decreasing the database
       load associated with smaller cache sizes.  This system is described in detail at
       http://www.danga.com/memcached.

INSTALLATION

       Configure pmdamemcache to extract the values from set of hosts used in the memcache farm.  These hosts
       can be listed in the $PCP_PMDAS_DIR/memcache/memcache.conf file, in the format (i.e.  Perl array)
       described at the top of pmdamemcache.pl.  A custom refresh rate can also be configured using this
       mechanism.

               # cd $PCP_PMDAS_DIR/memcache
               # [ edit memcache.conf ]

       Once this is setup, you can access the names and values for the memcache performance metrics by doing the
       following as root:

               # cd $PCP_PMDAS_DIR/memcache
               # ./Install

       If you want to undo the installation, do the following as root:

               # cd $PCP_PMDAS_DIR/memcache
               # ./Remove

       pmdamemcache is launched by pmcd(1) and should never be executed directly.  The Install and Remove
       scripts notify pmcd(1) when the agent is installed or removed.

FILES

       $PCP_PMDAS_DIR/memcache/memcache.conf
           configuration file listing monitored memcache instances

       $PCP_PMDAS_DIR/memcache/Install
           installation script for the pmdamemcache agent

       $PCP_PMDAS_DIR/memcache/Remove
           undo installation script for the pmdamemcache agent

       $PCP_LOG_DIR/pmcd/memcache.log
           default log file for error messages from pmdamemcache

SEE ALSO

       pmcd(1) and memcached(1).

3.8.12                                        Performance Co-Pilot                               PMDAMEMCACHE(1)