pmnscomp compiles a Performance Metrics Name Space (PMNS) in
ASCII format into a more efficient binary representation.
pmLoadNameSpace(3) is able to load this binary representation
significantly faster than the equivalent ASCII representation.
If outfile already exists pmnscomp will exit without overwriting
By convention, the name of the compiled namespace is that of the
root file of the ASCII namespace, with .bin appended. For
example, the root of the default PMNS is a file named root and
the compiled version of the entire namespace is root.bin.
The options are;
-d By default the PMNS to be compiled is expected to contain at
most one name for each unique Performance Metric Identifier
(PMID). The -d option relaxes this restriction and allows
the compilation of a PMNS in which multiple names may be
associated with a single PMID. Duplicate names are useful
when a particular metric may be logically associated with
more than one group of related metrics, or when it is
desired to create abbreviated aliases to name a set of
frequently used metrics.
-f Force overwriting of an existing outfile if it already
-n Normally pmnscomp operates on the default PMNS, however if
the -n option is specified an alternative namespace is
loaded from the file namespace.-v By default, pmnscomp writes a version 2 compiled namespace.
If version is 1 then pmnscomp will write a version 1
namespace which is similar to version 2, without the extra
integrity afforded by checksums. Note that PCP version 2.0
or later can handle both versions 1 and 2 of the binary PMNS
The default input 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 input PMNS.
Cannot open ``xyz'' - the filename for the root of the PMNS that
was passed to pmLoadNameSpace(3) is bogus.
Illegal PMID - either one of the three PMID components (see
pmns(5)) is not an integer, or the value for one of the
components is negative, or too large.
Expected ... - specific syntax errors when a particular type of
lexical symbol was expected and not found; the messages are
intended to be self-explanatory.
Internal botch - implementation problem for the parser ...
Duplicate name ``abc'' in subtree for ``pqr.xyz'' - for each non-
leaf node, the names of all immediate descendents must be unique.
No name space entry for ``root'' - the special non-leaf node with
a pathname of ``root'' defines the root of the PMNS, and must
appear somewhere in the PMNS specification.
Multiple name space entries for ``root'' - more than one ``root''
node does not make sense!
Disconnected subtree (``abc.xyz.def'') in name space - the
pathname for this non-leaf node does not correspond to any
pathname in the PMNS, hence this non-leaf node is ``orphaned'' in
Cannot find definition for non-terminal node ``xyz'' in name
space - a non-terminal node is named as part of its parent's
specification, but is never defined.
Duplicate metric id (xxx) in name space for metrics ``abc'' and
``xyz'' - each PMID must be unique across the PMNS.
default PMNS specification files
compiled version of the default PMNS, when the environment
variable PMNS_DEFAULT is unset
some standard macros for PMID generation
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
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 firstname.lastname@example.org. This page was obtained from the
project's upstream Git repository
⟨https://github.com/performancecopilot/pcp.git⟩ on 2021-08-27.
(At that time, the date of the most recent commit that was found
in the repository was 2021-08-27.) If you discover any rendering
problems in this HTML version of the page, or you 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 to
Performance Co-Pilot PCP PMNSCOMP(1)