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202 lines
6.8 KiB
ReStructuredText
202 lines
6.8 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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Extended view:
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.. image:: ../_static/processlist-extended.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, only in standalone mode)
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- Extended stats for the selected process (optional)
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- Processes list
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The processes summary line displays:
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- Total number of tasks/processes (aliases as total in the Glances API)
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- Number of threads
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- Number of running tasks/processes
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- Number of sleeping tasks/processes
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- Other number of tasks/processes (not in running or sleeping states)
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- Sort key for the process list
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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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You can also set the sort key in the UI:
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- by clicking on left and right arrows
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- by clicking on the following shortcuts or command line option:
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.. list-table:: Title
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:widths: 10 30 30
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:header-rows: 1
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* - Shortcut
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- Command line option
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- Description
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* - a
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- Automatic sort
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- Default sort
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* - c
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- --sort-processes cpu_percent
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- Sort by CPU
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* - e
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- N/A
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- Pin the process and display extended stats
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* - i
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- --sort-processes io_counters
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- Sort by DISK I/O
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* - j
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- --programs
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- Accumulate processes by program (extended stats disable in this mode)
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* - m
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- --sort-processes memory_percent
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- Sort by MEM
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* - p
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- --sort-processes name
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- Sort by process name
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* - t
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- --sort-processes cpu_times
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- Sort by CPU times
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* - u
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- --sort-processes username
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- Sort by process username
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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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.. list-table:: Title
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:widths: 10 60
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:header-rows: 0
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* - ``CPU%``
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- Command line option
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- % of CPU used by the process
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If Irix/Solaris mode is off ('0' key), the value
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is divided by logical core number
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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 ('0' key), the value
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is divided by logical core number
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``MEM%`` % of MEM used by the process (RES divided by
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the total RAM you have)
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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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Virtual memory is usually much larger than physical
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memory, making it possible to run programs for which
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the total code plus data size is greater than the amount
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of RAM available.
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Most of the time, this is not a useful number.
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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 (column is replaced by NPROCS in accumulated mode)
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``USER`` User ID
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``THR`` Threads number of the process
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``TIME+`` Cumulative CPU time used by the process
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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 I/O)
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- ``Z``: defunct ("zombie") process
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- ``T``: traced by job control signal
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- ``t``: stopped by debugger during the tracing
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- ``X``: dead (should never be seen)
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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
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*python* (regexp)
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- ``.*python.*``: Filter processes name or command line containing
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*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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In curses/standalone mode, you can select a process using ``UP`` and ``DOWN`` and press:
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- ``k`` to kill the selected process
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.. note::
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Limit for CPU and MEM percent values can be overwritten in the
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configuration file under the ``[processlist]`` section. It is also
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possible to define limit for Nice values (comma-separated list).
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For example: nice_warning=-20,-19,-18
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Accumulated per program — key 'j'
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---------------------------------
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When activated ('j' hotkey or --programs option in the command line), processes are merged
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to display which programs are active. The columns show the accumulated cpu consumption, the
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accumulated virtual and resident memory consumption, the accumulated transferred data I/O.
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The PID columns is replaced by a NPROCS column which is the number of processes. |