pmnsdel removes subtrees of names from a Performance Metrics Name
Space (PMNS), as used by the components of the Performance Co-Pilot
Normally pmnsdel operates on the default Performance Metrics Name
Space (PMNS), however if the -n option is specified an alternative
namespace is used from the file namespace.
The default PMNS is found in the file $PCP_VAR_DIR/pmns/root unless
the environment variable PMNS_DEFAULT is set, in which case the value
is assumed to be the pathname to the file containing the default
The metric names to be deleted are all those for which one of the
metricpath arguments is a prefix in the PMNS, see pmns(5).
All of the files defining the PMNS must be located within the
directory that contains the root of the PMNS, and this would
typically be $PCP_VAR_DIR/pmns for the default PMNS, and this would
typically imply running pmnsdel as root.
Provided some initial integrity checks are satisfied, pmnsdel will
update the necessary PMNS files. Should an error be encountered the
original namespace is restored. Note that any PMNS files that are no
longer referenced by the modified namespace will not be removed, even
though their contents are not part of the new namespace.
Environment variables with the prefix PCP_ are used to parameterize
the file and directory names used by PCP. On each installation, the
file /etc/pcp.conf contains the local values for these variables.
The $PCP_CONF variable may be used to specify an alternative
configuration file, as described in pcp.conf(5).
This page is part of the PCP (Performance Co-Pilot) project.
Information about the project can be found at ⟨http://www.pcp.io/⟩.
If you have a bug report for this manual page, send it to
email@example.com. This page was obtained from the project's upstream
Git repository ⟨git://git.pcp.io/pcp⟩ on 2017-03-13. If you discover
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believe there is a better or more up-to-date source for the page, or
you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a mail
Performance Co-Pilot PCP PMNSDEL(1)