iostat2pcp(1) — Linux manual page


IOSTAT2PCP(1)              General Commands Manual             IOSTAT2PCP(1)

NAME         top

       iostat2pcp - import iostat data and create a PCP archive

SYNOPSIS         top

       iostat2pcp [-v] [-S start] [-t interval] [-Z timezone] infile outfile

DESCRIPTION         top

       iostat2pcp reads a text file created with iostat(1) (infile) and
       translates this into a Performance Co-Pilot (PCP) archive with the
       basename outfile.  If infile is ``-'' then iostat2pcp reads from
       standard input, allowing easy preprocessing of the iostat(1) output
       with sed(1) or similar.

       The resultant PCP archive 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 pmie(1), etc.

       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 iostat2pcp will
       not overwrite them and will exit with an error message.

       The first output sample from iostat(1) contains a statistical summary
       since boot time and is ignored by iostat2pcp, so the first real data
       set is the second one in the iostat(1) output.

       The best results are obtained when iostat(1) was run with its own -t
       flag, so each output sample is prefixed with a timestamp.  Even
       better is -t with $S_TIME_FORMAT=ISO set in environment when
       iostat(1) is run, in which case the timestamp includes the timezone.

       Note that if $S_TIME_FORMAT=ISO is not used with the -t option then
       iostat(1) may produce a timestamp controlled by LC_TIME from the
       locale that is in a format iostat2pcp cannot parse.  The formats for
       the timestamp that iostat2pcp accepts are illustrated by these

           (for the $S_TIME_FORMAT=ISO).

       2013-07-06 21:34:39
           (for some of the European formats, e.g. de_AT, de_BE, de_LU and

       06/07/13 21:34:39
           (for all of the $LC_TIME settings for English locales outside
           North America, e.g. en_AU, en_GB, en_IE, en_NZ, en_SG and en_ZA,
           and all the Spanish locales, e.g. es_ES, es_MX and es_AR).

       In particular, note that some common North American $LC_TIME settings
       will not work with iostat2pcp (namely, en_US, POSIX and C) because
       they use the MM/DD format which may be incorrectly converted with the
       assumed DD/MM format.  This is another reason to recommend setting

       If there are no timestamps in the input stream, iostat2pcp will try
       and deduce the sample interval if basic Disk data (-d option for
       iostat(1)) is found.  If this fails, then the -t option may be used
       to specify the sample interval in seconds.  This option is ignored if
       timestamps are found in the input stream.

       The -S option may be used to specify as start time for the first real
       sample in infile, where start must have the format HH:MM:SS.  This
       option is ignored if timestamps are found in the input stream.

       The -Z option may be used to specify a timezone.  It must have the
       format +HHMM (for hours and minutes East of UTC) or -HHMM (for hours
       and minutes West of 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 for the -Z option.  This option is
       ignored if ISO timestamps are found in the input stream.  If the
       timezone is not specified and cannot be deduced, it defaults to

       Some additional diagnostic output is generated with the -v option.

       iostat2pcp 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.

OPTIONS         top

       The available command line options are:

       -S start
            Specify the start time for the first sample.

       -t interval
            Specify the sample interval in seconds.

       -v   Print verbose output.

       -Z timezone
            Specify the timezone to use, see above.

CAVEATS         top

       iostat2pcp requires infile to have been created by the version of
       iostat(1) from .

       iostat2pcp handles the -c (CPU), -d (Disk), -x (eXtended Disk) and -p
       (Partition) report formats (including their -k, -m, -z and ALL
       variants), but does not accommodate the -n (Network Filesystem)
       report format from iostat(1); this is a demand-driven limitation
       rather than a technical limitation.


       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).

SEE ALSO         top

       iostat(1), pmchart(1), pmie(1), pmlogger(1), sed(1),
       Date::Format(3pm), Date::Parse(3pm), PCP::LogImport(3pm) and

COLOPHON         top

       This page is part of the PCP (Performance Co-Pilot) project.
       Information about the project can be found at ⟨⟩.
       If you have a bug report for this manual page, send it to  This page was obtained from the project's upstream
       Git repository ⟨⟩ on
       2020-07-14.  (At that time, the date of the most recent commit that
       was found in the repository was 2020-07-14.)  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                       IOSTAT2PCP(1)

Pages that refer to this page: pcp-iostat(1)pmiostat(1)