Rechercher une page de manuel
pmdamemcache
Langue: en
Version: Performance Co-Pilot (debian - 07/07/09)
Section: 1 (Commandes utilisateur)
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).Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre