glances/docs/aoa/load.rst

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.. _load:
Load
====
*Availability: Unix*
.. image:: ../_static/load.png
On the *No Sheep* blog, Zachary Tirrell defines the `load average`_
on GNU/Linux operating system:
"In short it is the average sum of the number of processes
waiting in the run-queue plus the number currently executing
over 1, 5, and 15 minutes time periods."
Be aware that Load on Linux and BSD are different things, high
S`load on BSD`_ does not means high CPU load.
Glances gets the number of CPU core to adapt the alerts.
Alerts on load average are only set on 15 minutes time period.
The first line also displays the number of CPU core.
Legend:
============= ============
Load avg Status
============= ============
``<0.7*core`` ``OK``
``>0.7*core`` ``CAREFUL``
``>1*core`` ``WARNING``
``>5*core`` ``CRITICAL``
============= ============
.. note::
Limit values can be overwritten in the configuration file under
the ``[load]`` section.
.. _load average: http://nosheep.net/story/defining-unix-load-average/
.. _load on BSD: http://undeadly.org/cgi?action=article&sid=20090715034920