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README: more information in Power section

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Adrian C. (anrxc) 2009-10-22 14:52:47 +02:00
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@ -7,9 +7,9 @@ ones:
http://git.sysphere.org/vicious/about/ http://git.sysphere.org/vicious/about/
Vicious widget types are a framework for creating your own widgets. Vicious widget types are a framework for creating your own awesome
Before using a widget type *you* need to ensure that a valid source of widgets. Before using a widget type *you* need to ensure that a valid
information exists. source of information exists.
Usage Usage
@ -87,18 +87,23 @@ Power and Caching
----------------- -----------------
When a lot of widgets are in use they, and awesome, can generate a lot When a lot of widgets are in use they, and awesome, can generate a lot
of wake-ups and also be very expensive for system resources. This is of wake-ups and also be very expensive for system resources. This is
especially important when running on battery power. Suspending widgets especially important when running on battery power. It was a big
is one way to prevent them from draining your battery. problem with awesome v2 and widgets that used shell scripts to gather
data, and with widget libraries written in languages like Ruby.
Lua is an extremely fast and efficient programming language, and
Vicious takes advantage of that. But suspending Vicious widgets is one
way to prevent them from draining your battery, despite that.
Update intervals also play a big role, and you can save a lot of power Update intervals also play a big role, and you can save a lot of power
with a smart approach. Avoid intervals like: 5, 10, 30, 60... to avoid with a smart approach. Don't use intervals like: 5, 10, 30, 60... to
harmonics. If you take the 60-second mark as an example, all of your avoid harmonics. If you take the 60-second mark as an example, all of
widgets would be executed at that point. Instead think about using your widgets would be executed at that point. Instead think about
only prime numbers, in that case you will have only a few widgets using only prime numbers, in that case you will have only a few
executed at any given time interval. When choosing intervals also widgets executed at any given time interval. When choosing intervals
consider what a widget actually does. Some widget types read files also consider what a widget actually does. Some widget types read
that reside in memory, others call external utilities and some, like files that reside in memory, others call external utilities and some,
the mbox widget, read big files. like the mbox widget, read big files.
Vicious can also cache values returned by widget types. Caching Vicious can also cache values returned by widget types. Caching
enables you to have multiple widgets using the same widget type. With enables you to have multiple widgets using the same widget type. With