PCP-PS(1)

NAME
pcp-ps - Report statistics for Linux Process.

SYNOPSIS
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
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
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 idenfier.
    TTY | The termianl assoicated with the prcoess.
    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 | realtime 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

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

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

CODE | HEADER | DESCRIPTION
pid | PID | a number representing the process ID
%cpu | %CPU | %cpu utilization of the process in "##.#" format. Currently, it is the CPU time used divided by the time the process has been running (cputime/realtime ratio), expressed as a percentage.
%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 reported 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 otherwise.
All | N/A | This option shows USER, PID, PPID, PRI, %CPU, %MEM, VSZ, RSS, S, START, TIME, WCHAN and COMMAND.

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

PCP ENVIRONMENT
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).

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