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122 lines
4.2 KiB
ReStructuredText
122 lines
4.2 KiB
ReStructuredText
.. _ps:
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Processes List
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==============
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Compact view:
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.. image:: ../_static/processlist.png
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Full view:
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.. image:: ../_static/processlist-wide.png
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Filtered view:
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.. image:: ../_static/processlist-filter.png
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The process view consists of 3 parts:
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- Processes summary
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- Monitored processes list (optional)
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- Processes list
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The processes summary line displays:
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- Tasks number (total number of processes)
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- Threads number
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- Running tasks number
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- Sleeping tasks number
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- Other tasks number (not running or sleeping)
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- Sort key
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By default, or if you hit the ``a`` key, the processes list is
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automatically sorted by:
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- ``CPU``: if there is no alert (default behavior)
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- ``CPU``: if a CPU or LOAD alert is detected
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- ``MEM``: if a memory alert is detected
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- ``DISK I/O``: if a CPU iowait alert is detected
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The number of processes in the list is adapted to the screen size.
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Columns display
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---------------
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========================= ==============================================
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``CPU%`` % of CPU used by the process
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If Irix/Solaris mode is off, the value is
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divided by logical core number
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``MEM%`` % of MEM used by the process
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``VIRT`` Virtual Memory Size
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The total amount of virtual memory used by the
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process. It includes all code, data and shared
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libraries plus pages that have been swapped out
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and pages that have been mapped but not used.
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``RES`` Resident Memory Size
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The non-swapped physical memory a process is
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using (what's currently in the physical memory).
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``PID`` Process ID
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``USER`` User ID
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``NI`` Nice level of the process
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``S`` Process status
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The status of the process:
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- ``R``: running or runnable (on run queue)
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- ``S``: interruptible sleep (waiting for an event)
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- ``D``: uninterruptible sleep (usually IO)
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- ``Z``: defunct ("zombie") process
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- ``T``: traced/stopped by job control signal
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- ``X``: dead (should never be seen)
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``TIME+`` Cumulative CPU time used by the process
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``R/s`` Per process I/O read rate in B/s
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``W/s`` Per process I/O write rate in B/s
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``COMMAND`` Process command line or command name
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User can switch to the process name by
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pressing on the ``'/'`` key
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========================= ==============================================
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Process filtering
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-----------------
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It's possible to filter the processes list using the ``ENTER`` key.
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Filter syntax is the following (examples):
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- python > Filter processes name or command line starting with *python* (regexp)
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- .*python.* > Filter processes name or command line containing *python* (regexp)
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- username:nicolargo > Processes of nicolargo user (key:regexp)
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- cmdline:\/usr\/bin.* > Processes starting by */usr/bin*
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Extended info
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-------------
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.. image:: ../_static/processlist-top.png
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In standalone mode, additional information are provided for the top
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process:
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========================= ==============================================
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``CPU affinity`` Number of cores used by the process
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``Memory info`` Extended memory information about the process
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For example, on Linux: swap, shared, text,
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lib, data and dirty
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``Open`` The number of threads, files and network
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sessions (TCP and UDP) used by the process
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``IO nice`` The process I/O niceness (priority)
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========================= ==============================================
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The extended stats feature can be enabled using the
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``--enable-process-extended`` option (command line) or the ``e`` key
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(curses interface).
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.. note::
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Limit values can be overwritten in the configuration file under
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the ``[process]`` section.
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