pcp-ps(1) — Linux manual page


PCP-PS(1)                General Commands Manual               PCP-PS(1)

NAME         top

       pcp-ps - Report statistics for Linux Process.

SYNOPSIS         top

       pcp [pcp options] ps [-e] [-U [username]] [-V --version] [-c
       Command name] [-P pid1,pid2..]  [-p pid1,pid2..]  [-o
       col1,col2... or ALL] [-Z timezone] [-z] [-?]

DESCRIPTION         top

       The pcp-ps command is used for monitoring individual process
       running on the system.  Using various options it helps a user to
       see useful information related to the processes.  This
       information includes CPU percentage, memory and stack usage,
       scheduling and priority.  By default pcp-ps reports live data for
       the local host.

OPTIONS         top

       When invoked via the pcp(1) command, the -h/--host, -O/--origin,
       -t/--interval, -Z/--timezone and several other pcp options become
       indirectly available; refer to PCPIntro(1) for a complete
       description of these options.

       The additional command line options available for pcp-ps are:

       -e   Display all the process.
            PID    Process identifier.
            TTY    The terminal associated with the process.
            TIME   The  cumulated CPU time in [DD-]hh:mm:ss
                   format (time=TIME).
            CMD    The command name of the task.

       -c [command name]
            Display the real Command name of the tasks being monitored
            instead of the UID.  If command name is specified, then only
            tasks belonging to the specified command are displayed.

       -U [username], --user-name[=username]
            Display the real user name of the tasks being monitored
            instead of the UID.  If username is specified, then only
            tasks belonging to the specified user are displayed.

       -V, --version
            Print version number then exit.

       -p pid1,pid2.., --pid-list=pid1,pid2..
            Display only processes with the listed PIDs.

       -P ppid1,ppid2.., --ppid-list=ppid1,ppid2..
            Display only processes with the listed PPIDs.

       -o   User-defined format.

            It is a single argument in the form of a blank-separated or
            comma-separated list, which offers a way to specify
            individual output columns.

            The argument to -o are following:

            COL      HEADER   DESCRIPTION
            %cpu     %CPU     cpu utilization of the process
            %mem     %MEM     physical memory on the machine expressed
                              as a percentage
            start    START    time the command started
            time     TIME     accumulated cpu time, user + system
            cls      CLS      scheduling class of the process
            cmd      CMD      see args.  (alias args, command).
            pid      PID      The process ID
            ppid     PPID     Parent process ID
            pri      PRI      Priority of the process
            state    S        see s
            rss      RSS      the non-swapped physical memory that a
                              task has used
            rtprio   RTPRIO   real-time priority
            pname    Pname    Process name
            tty      TT       controlling tty (terminal)
            uid      UID      see euid
            uname    USER     see euser
            vsize    VSZ      see vsz
            wchan    WCHAN    name of the kernel function in which the
                              process is sleeping


       Here are the different keywords that may be used to control the
       output format (e.g. with option -o) or to sort the selected

       For example: pcp-ps -o pid,user,args

       pid     PID       a number representing the process ID
       %cpu    %CPU      %cpu utilization of the process in "##.#"
                         Currently, it is the CPU time used divided by
                         the time the process has been running
                         (cputime/realtime ratio), expressed as a
       %mem    %MEM      %ratio of the process's resident set size  to
                         the physical memory on the machine, expressed
                         as a percentage.
       args    COMMAND   Command with all its arguments as a string.
                         Modifications to the arguments may be shown.
                         The output in this column may contain spaces.
                         A process marked <defunct> is partly dead,
                         waiting to be fully destroyed by its parent.
                         Sometimes the process args will be unavailable;
                         when this happens,will instead print the
                         executable name in brackets.
       class   CLS       scheduling class of the process.
                         Field's possible values are: -      not
                         TS     SCHED_OTHER
                         FF     SCHED_FIFO
                         RR     SCHED_RR
                         B      SCHED_BATCH
                         ISO    SCHED_ISO
                         IDL    SCHED_IDLE
                         DLN    SCHED_DEADLINE
                         ?      unknown value
       s       S         minimal state display.  See also state if you
                         want additional information displayed.
       euid    EUID      effective user ID.
       vsz     VSZ       virtual memory size of the process in KiB
                         (1024-byte units).  Device mappings are
                         currently excluded; this is subject to change.
       euser   EUSER     effective user name.  This will be the textual
                         user ID, if it can be obtained and the field
                         width permits, or a decimal representation
       All     N/A       This option shows USER, PID, PPID, PRI, %CPU,
                         %MEM, VSZ, RSS, S, START, TIME, WCHAN and

       -Z timezone, --timezone=timezone
              By default, pcp-ps reports the time of day according to
              the local timezone on the system where pcp-ps is run.  The
              -Z option changes the timezone to timezone in the format
              of the environment variable TZ as described in environ(7).

       -z , --hostzone
              Change the reporting timezone to the local timezone at the
              host that is the source of the performance metrics.  When
              replaying a PCP archive that was captured in a foreign
              timezone, the -z option would almost always be used (the
              default reporting timezone is the local timezone, which
              may not be the same as the timezone of the PCP archive).

       -? , --help
              Display usage message and exit.

NOTES         top

       pcp-ps is inspired by the ps(1) command and aims to be command
       line and output compatible with it.


       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

       For environment variables affecting PCP tools, see

SEE ALSO         top

       PCPIntro(1), pcp(1), pcp-ps(1), python(1), pmParseInterval(3),
       strftime(3) and environ(7).

COLOPHON         top

       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 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

Performance Co-Pilot               PCP                         PCP-PS(1)

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