pmdumplog dumps assorted control, metadata, index and state
information from the files of a Performance Co-Pilot (PCP) archive
log. The archive log has the base name archive and must have been
previously created using pmlogger(1).
Normally pmdumplog operates on the distributed Performance Metrics
Name Space (PMNS), however if the -n option is specified an
alternative local PMNS is loaded from the file pmnsfile.
If any metricname arguments appear, the report will be restricted to
information relevant to the named performance metrics. If metricname
is a non-leaf node in the namespace (see pmns(5)), then pmdumplog
will recursively descend the archive's namespace and report on all
The options control the specific information to be reported.
-a Report everything, i.e. the flags -d, -i, -l, -m, -s and -t.
-d Display the metadata and descriptions for those performance
metrics that appear at least once in the archive: see
pmLookupDesc(3) for more details on the metadata describing
-i Display the instance domains, and any variations in their
instance members over the duration of the archive: see
pmGetInDom(3) for more details on instance domains.
-l Dump the archive label, showing the log format version, the time
and date for the start and (current) end of the archive, and the
host from which the performance metrics values were collected.
-L Like -l, just a little more verbose.
-m Print the values for the performance metrics from the archive.
This is the default display option.
Metrics without an instance domain are reported as:
[timestamp] metric-id (metric-name): value1 value2
Metrics with an instance domain are reported as:
[timestamp] metric-id (metric-name):
inst [internal-idor "external-id"] value1 value2
The timestamp is only reported for the first metric in a group
of metrics sharing the same timestamp.
-M If no metricname is specified then <mark> records are reported
when they are found in the archive. If metricname arguments are
specified, then <mark> records are not reported by default. The
-M option forces <mark> records to be reported, even when
metricname arguments are specified.
<mark> records are inserted into a PCP archive log by
pmlogger(1), pmlogextract(1), and similar tools to indicate a
temporal discontinuity in the time-series of metric values.
-r Process the archive in reverse order, from most recent to oldest
recorded metric values.
-S When using the -m option, the report will be restricted to those
records logged at or after starttime. Refer to PCPIntro(1) for
a complete description of the syntax for starttime.
-s Report the size in bytes of each physical record in the archive.
-T When using the -m option, the report will be restricted to those
records logged before or at endtime. Refer to PCPIntro(1) for a
complete description of the syntax for endtime.
-t Dump the temporal index that is used to provide accelerated
access to large archive files.
The integrity of the index will also be checked. If the index
is found to be corrupted, the ``*.index'' file can be renamed or
removed and the archive will still be accessible, however
retrievals may take longer without the index. Note however that
a corrupted temporal index is usually indicative of a deeper
malaise that may infect all files in a PCP archive.
-v Verbose mode. Dump the records from a physical archive file in
hexadecimal format. In this case file is the name of a single
file, usually a basename (as would otherwise appear as the
archive command line argument), concatenated with ``.'' followed
by one of meta (the metadata), index (the temporal index), or a
digit (one of the volumes of metric values).
Use of -v precludes the use of all other options and arguments.
-x Extended timestamp reporting format that includes the day of the
week, day of the month, month and year in addition to the
(default) hours, minutes and seconds time. This is useful for
archives that span multiple days.
A second -x option will also report the timestamp as an offset
from the start of the archive in units of seconds. This is
useful in conjunction with debug diagnostics from the archive
handling routines in libpcp.
By default, pmdumplog reports the time of day according to the local
timezone on the system where pmdumplog is run. The -Z option changes
the timezone to timezone in the format of the environment variable TZ
as described in environ(7). The -z option changes the timezone to
the local timezone at the host that is the source of the performance
metrics, as specified in the label record of the archive log.
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
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
Performance Co-Pilot PCP PMDUMPLOG(1)