ganglia2pcp is intended to read a set of ganglia files stored in
the rrd format and translate them into a Performance Co-Pilot
(PCP) archive with the basename outfile.
The intent of this converter is to take all of the rrd files
found in the input_dir and generate a single pcp archive file.
The mapping of ganglia metrics to pcp metrics is defined
The resultant PCP achive may be used with all the PCP client
tools to graph subsets of the data using pmchart(1), perform data
reduction and reporting, filter with the PCP inference engine
A series of physical files will be created with the prefix
outfile. These are outfile.0 (the performance data),
outfile.meta (the metadata that describes the performance data)
and outfile.index (a temporal index to improve efficiency of
replay operations for the archive). If any of these files exists
already, then sar2pcp will not overwrite them and will exit with
an error message of the form
__pmLogNewFile: ``blah.0'' already exists, not over-written
ganglia2pcp is a Perl script that uses the PCP::LogImport Perl
wrapper around the PCP libpcp_import library, and as such could
be used as an example to develop new tools to import other types
of performance data and create PCP archives. The RRDs Perl
wrapper is used to parse the raw rrd format files.
The available command line options are:
The outdir argument specifies a output to write to. The
default is the current directory.
The end argument specifies a end time in a format understood
by str2time. The default start time is current time.
The outfile argument specifies a output file name. The
default name is in the standard pmlogger format based on the
start time, e.g., 20150201.00.10.
The hostname argument specifies a hostname to write to the
archive. The default is taken from the directory name that
the rrd files reside in.
The start argument specifies a start time in a format
understood by str2time. The default start time is 24 prior
to current time.
The timezone argument sets the source timezone in the PCP
archive (the default is to use the local timezone). The
timezone must have the format +HHMM (for hours and minutes
East of UTC) or -HHMM (for hours and minutes West of UTC) or
UTC. Note in particular that neither the zoneinfo (aka
Olson) format, e.g. Europe/Paris, nor the Posix TZ format,
e.g. EST+5 is allowed. Example: timezone=``+1100''.
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 email@example.com. 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 GANGLIA2PCP(1)