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NAME | INTRODUCTION | PMLOGCONF-SETUP | PMMGR | PCP-COLLECTL | PCP-WEBAPPS | PMWEBD | SEE ALSO | COLOPHON |
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PCPCOMPAT(1) General Commands Manual PCPCOMPAT(1)
PCPCompat, pcp-collectl, pmmgr, pmwebd - backward-compatibility
in the Performance Co-Pilot (PCP)
The Performance Co-Pilot (PCP) is a toolkit designed for
monitoring and managing system-level performance. These services
are distributed and scalable to accommodate the most complex
system configurations and performance problems.
In order to achieve these goals effectively, protocol and on-disk
compatibility is provided between different versions of PCP. It
is feasible (and indeed encouraged) to use current PCP tools to
interrogate any remote, down-rev or up-rev pmcd(1) and also to
replay any historical PCP archive (the PCP testsuite includes PCP
archives created over 20 years ago!).
From time to time the PCP developers deprecate and remove PCP
utilities, replacing them with new versions of utilities
providing comparable features. This page describes replacement
utilities for historical PCP tools.
Earlier versions of PCP (prior to v5.1.1) provided a shell script
that was used internally by pmlogconf(1), located in the
PCP_BINADM_DIR directory, named pmlogconf-setup. This script has
been retired. The equivalent functionality remains available in
the unlikely event it should be needed via the -s or --setup
option to pmlogconf(1).
The version 1 pmlogconf-setup configuration file format (from
IRIX) was also retired in this release, after more than 10 years
of automatic transition to version 2 format by pmlogconf.
The standalone PCP daemon manager pmmgr has been retired from PCP
v5.2.0 onward. It was phased out in favour of the simpler
pmfind(1) service for setting up pmie(1) and pmlogger(1)
``farms'' of discovered PCP collector systems with
pmfind_check(1). The new mechanisms, especially when integrated
with systemd, require no additional daemons and are better
integrated with the pmie and pmlogger service management used
elsewhere in PCP.
The pcp-collectl utility has been superceded by pmrep(1) from PCP
v5 onward.
The equivalent of pcp-collectl subsystem reporting is achieved as
follows:
pmrep :collectl-sc
Processor subsystem view.
pmrep :collectl-sm
Memory subsystem view.
pmrep :collectl-sd
Aggregate disks view.
pmrep :collectl-sD
Per-disk-device view.
pmrep :collectl-dm-sD
Device mapper view.
pmrep :collectl-sn
Network subsystem view.
The standalone web applications packaged with older PCP versions
have been superceded by grafana-server(1) with the grafana-pcp
plugin https://github.com/performancecopilot/grafana-pcp .
This plugin provides an implementation of the Vector application,
as well as data sources for pmdabpftrace(1) (bpftrace(8) scripts)
and pmseries(1) (fast, scalable Redis-based time series
analysis).
The pmwebd daemon has been superceded by pmproxy(1) from PCP v5
onward.
By default, pmproxy will now listen on both its original port
(44322) and the PCP web API port (44323) when the time series
support is built.
pmproxy provides a compatible implementation of the live
PMWEBAPI(3) interfaces used traditionally by the Vector web
application (see the ``PCP-WEBAPPS'' section). It also provides
extensions to the original pmwebd REST APIs (such as derived
metrics, namespace lookups and instance domain profiles), support
for the HTTPS protocol, and fast, scalable time series querying
using the pmseries(1) REST API and redis-server(1).
The partial Graphite API emulation provided by pmwebd has not
been re-implemented - applications wishing to use similar
services could use the scalable time series REST APIs described
on PMWEBAPI(3).
pcp(1), pmcd(1), pmrep(1), pmfind(1), pmfind_check(1),
pmlogconf(1), pmproxy(1), pmseries(1), pmdabpftrace(1),
redis-server(1), grafana-server(1) and PMWEBAPI(3).
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 pcp@groups.io. This page was obtained from the
project's upstream Git repository
⟨https://github.com/performancecopilot/pcp.git⟩ on 2020-12-18.
(At that time, the date of the most recent commit that was found
in the repository was 2020-12-18.) 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
man-pages@man7.org
Performance Co-Pilot PCP PCPCOMPAT(1)
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