11-12-2008
Thanks for the response. I did start reading those 2 sites.
I was also interested in people's opinions and experiences of any of the technologies surrounding Linux High Performance Clusters and parallel filesystems.
Is anybody out there using these technologies in production and what kinds of things are they doing and how?
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LEARN ABOUT CENTOS
pmdapostgresql
PMDAPOSTGRESQL(1) Performance Co-Pilot PMDAPOSTGRESQL(1)
NAME
pmdapostgresql - PostgreSQL database PMDA
DESCRIPTION
pmdapostgresql is a Performance Co-Pilot PMDA which extracts live performance data from a running PostgreSQL database.
INSTALLATION
pmdapostgresql uses a configuration file from (in this order):
o /etc/pcpdbi.conf
o $PCP_PMDAS_DIR/postgresql/postgresql.conf
This file can contain overridden values (Perl code) for the settings listed at the start of pmdapostgresql.pl, namely:
o database name (see DBI(3) for details)
o database username
Once this is setup, you can access the names and values for the postgresql performance metrics by doing the following as root:
# cd $PCP_PMDAS_DIR/postgresql
# ./Install
If you want to undo the installation, do the following as root:
# cd $PCP_PMDAS_DIR/postgresql
# ./Remove
pmdapostgresql 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
/etc/pcpdbi.conf
configuration file for all PCP database monitors
$PCP_PMDAS_DIR/postgresql/postgresql.conf
configuration file for pmdapostgresql
$PCP_PMDAS_DIR/postgresql/Install
installation script for the pmdapostgresql agent
$PCP_PMDAS_DIR/postgresql/Remove
undo installation script for the pmdapostgresql agent
$PCP_LOG_DIR/pmcd/postgresql.log
default log file for error messages from pmdapostgresql
SEE ALSO
pmcd(1), pmdadbping.pl(1) and DBI(3).
3.8.10 Performance Co-Pilot PMDAPOSTGRESQL(1)