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NAME | SYNOPSIS | DESCRIPTION | CONFIGURATION FILE | OPTIONS | FILES | PCP ENVIRONMENT | SEE ALSO | COLOPHON |
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PCP2ARROW(1) General Commands Manual PCP2ARROW(1)
pcp2arrow - pcp-to-arrow metrics exporter
pcp2arrow [-jLnrRVz?] [-8|-9 limit] [-a archive] [-A align]
[--archive-folio folio] [-c config] [--container container] [-h
host] [-i instances] [-J rank] [-K spec] [-o outfile] [-O origin]
[-s samples] [-S starttime] [-t interval] [-T endtime] [-Z
timezone] [metricspec...]
pcp2arrow is a customizable performance metrics exporter tool
from PCP to Apache Arrow. It is particularly useful as a
mechanism for producing the Parquet columnar data format, for use
with Pandas or similar data analysis modules. Each PCP metric,
and each instance of each metric, will form a unique column named
according to the PCP metric specification - that is, metric name
followed by square bracket enclosed instance name (for metrics
with an instance domain).
Any available performance metric, live or archived, system and/or
application, can be selected for exporting using either command
line arguments or a configuration file.
With no metricspec options, all available metrics are considered
for exporting.
pcp2arrow is a close relative of pmrep(1). Refer to pmrep(1) for
the metricspec description accepted on pcp2arrow command line.
See pmrep.conf(5) for description of the pcp2arrow.conf
configuration file syntax. This page describes pcp2arrow
specific options and configuration file differences with
pmrep.conf(5). pmrep(1) also lists some usage examples of which
most are applicable with pcp2arrow as well.
Only the command line options listed on this page are supported,
other options available for pmrep(1) are not supported.
Options via environment values (see pmGetOptions(3)) override the
corresponding built-in default values (if any). Configuration
file options override the corresponding environment variables (if
any). Command line options override the corresponding
configuration file options (if any).
pcp2arrow uses a configuration file with syntax described in
pmrep.conf(5). The following options are common with pmrep.conf:
version, source, speclocal, derived, header, globals, samples,
interval, type, type_prefer, ignore_incompat, names_change,
instances, live_filter, rank, limit_filter, limit_filter_force,
invert_filter, predicate, omit_flat, include_labels, precision,
precision_force, count_scale, count_scale_force, space_scale,
space_scale_force, time_scale, time_scale_force. The rest of the
pmrep.conf options are recognized but ignored for compatibility.
The available command line options are:
-8 limit, --limit-filter=limit
Limit results to instances with values above/below limit. A
positive integer will include instances with values at or
above the limit in reporting. A negative integer will
include instances with values at or below the limit in
reporting. A value of zero performs no limit filtering.
This option will not override possible per-metric
specifications. See also -J and -N.
-9 limit, --limit-filter-force=limit
Like -8 but this option will override per-metric
specifications.
-a archive, --archive=archive
Performance metric values are retrieved from the set of
Performance Co-Pilot (PCP) archive files identified by the
archive argument, which is a comma-separated list of names,
each of which may be the base name of an archive or the name
of a directory containing one or more archives.
-A align, --align=align
Force the initial sample to be aligned on the boundary of a
natural time unit align. Refer to PCPIntro(1) for a
complete description of the syntax for align.
--archive-folio=folio
Read metric source archives from the PCP archive folio
created by tools like pmchart(1) or, less often, manually
with mkaf(1).
-c config, --config=config
Specify the config file or directory to use. In case config
is a directory all files in it ending .conf will be
included. The default is the first found of:
./pcp2arrow.conf, $HOME/.pcp2arrow.conf,
$HOME/pcp/pcp2arrow.conf, and
$PCP_SYSCONF_DIR/pcp2arrow.conf. For details, see the above
section and pmrep.conf(5).
--container=container
Fetch performance metrics from the specified container,
either local or remote (see -h).
-C, --check
Exit before reporting any values, but after parsing the
configuration and metrics and printing possible headers.
-h host, --host=host
Fetch performance metrics from pmcd(1) on host, rather than
from the default localhost.
-H, --no-header
Do not print any headers.
-i instances, --instances=instances
Retrieve and report only the specified metric instances. By
default all instances, present and future, are reported.
Refer to pmrep(1) for complete description of this option.
-j, --live-filter
Perform instance live filtering. This allows capturing all
named instances even if processes are restarted at some
point (unlike without live filtering). Performing live
filtering over a huge number of instances will add some
internal overhead so a bit of user caution is advised. See
also -n.
-J rank, --rank=rank
Limit results to highest/lowest ranked instances of set-
valued metrics. A positive integer will include highest
valued instances in reporting. A negative integer will
include lowest valued instances in reporting. A value of
zero performs no ranking. Ranking does not imply sorting,
see -6. See also -8.
-K spec, --spec-local=spec
When fetching metrics from a local context (see -L), the -K
option may be used to control the DSO PMDAs that should be
made accessible. The spec argument conforms to the syntax
described in pmSpecLocalPMDA(3). More than one -K option
may be used.
-L, --local-PMDA
Use a local context to collect metrics from DSO PMDAs on the
local host without PMCD. See also -K.
-n, --invert-filter
Perform ranking before live filtering. By default instance
live filtering (when requested, see -j) happens before
instance ranking (when requested, see -J). With this option
the logic is inverted and ranking happens before live
filtering.
-o outfile, --output-file=outfile
Specify the output file outfile. -O origin, --origin=origin
When reporting archived metrics, start reporting at origin
within the time window (see -S and -T). Refer to
PCPIntro(1) for a complete description of the syntax for
origin.
-r, --raw
Output raw metric values, do not convert cumulative counters
to rates. This option will override possible per-metric
specifications.
-R, --raw-prefer
Like -r but this option will not override per-metric
specifications.
-s samples, --samples=samples
The samples argument defines the number of samples to be
retrieved and reported. If samples is 0 or -s is not
specified, pcp2arrow will sample and report continuously (in
real time mode) or until the end of the set of PCP archives
(in archive mode). See also -T.
-S starttime, --start=starttime
When reporting archived metrics, 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.
-t interval, --interval=interval
Set the reporting interval to something other than the
default 1 second. The interval argument follows the syntax
described in PCPIntro(1), and in the simplest form may be an
unsigned integer (the implied units in this case are
seconds). See also the -T option.
-T endtime, --finish=endtime
When reporting archived metrics, 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.
When used to define the runtime before pcp2arrow will exit,
if no samples is given (see -s) then the number of reported
samples depends on interval (see -t). If samples is given
then interval will be adjusted to allow reporting of samples
during runtime. In case all of -T, -s, and -t are given,
endtime determines the actual time pcp2arrow will run.
-v, --omit-flat
Report only set-valued metrics with instances (e.g.
disk.dev.read) and omit single-valued ``flat'' metrics
without instances (e.g. kernel.all.sysfork). See -i and
-I.
-V, --version
Display version number and exit.
-z, --hostzone
Use the local timezone of the host that is the source of the
performance metrics, as identified by either the -h or the
-a options. The default is to use the timezone of the local
host.
-Z timezone, --timezone=timezone
Use timezone for the date and time. Timezone is in the
format of the environment variable TZ as described in
environ(7). Note that when including a timezone string in
output, ISO 8601 -style UTC offsets are used (so something
like -Z EST+5 will become UTC-5).
-?, --help
Display usage message and exit.
pcp2arrow.conf
pcp2arrow configuration file (see -c)
$PCP_SYSCONF_DIR/pmrep/*.conf
system provided default pmrep configuration files
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).
For environment variables affecting PCP tools, see
pmGetOptions(3).
PCPIntro(1), mkaf(1), pcp(1), pmcd(1), pminfo(1), pmrep(1),
pmGetOptions(3), pmSpecLocalPMDA(3), LOGARCHIVE(5), pcp.conf(5),
pmrep.conf(5), PMNS(5) and environ(7).
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 protected]. This page was obtained from the
project's upstream Git repository
⟨https://github.com/performancecopilot/pcp.git⟩ on 2024-06-14.
(At that time, the date of the most recent commit that was found
in the repository was 2024-06-14.) 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
[email protected]
Performance Co-Pilot PCP PCP2ARROW(1)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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