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] [-V version] [-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

       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 examples:

           (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 en_DK.utf8).

       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

       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 $S_TIME_FORMAT=ISO.

       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

       The -V option specifies the version for the output PCP archive.
       By default the archive version $PCP_ARCHIVE_VERSION (set to 3 in
       current PCP releases) is used, and the only values currently
       supported for version are 2 or 3.

       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 ``UTC''.

       Some additional diagnostic output is generated with the -v

       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

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

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       ⟨⟩ on 2024-06-14.
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Performance Co-Pilot               PCP                     IOSTAT2PCP(1)

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