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It was added for some workloads, but ill-suited and never really got traction. Using cgroups to manage the resources of particular services (using systemd), or something separate like rtkit is a better bet.
60 lines
2.2 KiB
HTML
60 lines
2.2 KiB
HTML
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<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
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<meta name="robots" content="index,follow">
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<link rel="stylesheet" type="text/css" charset="utf-8" media="all" href="common.css">
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<title>UPower</title>
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<body>
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<h1>UPower</h1>
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<p>
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<img src="img/battery.png" alt="[image of a battery]">
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</p>
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<p>
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UPower is an abstraction for enumerating power devices,
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listening to device events and querying history and statistics.
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Any application or service on the system can access the
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<code>org.freedesktop.UPower</code> service via the system message bus.
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</p>
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<p>
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UPower was <a href="http://lists.freedesktop.org/archives/devkit-devel/2009-December/000567.html">
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once called DeviceKit-power</a>.
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UPower aims to make a large chunk of HAL redundant, as HAL is officially
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<a href="http://lists.freedesktop.org/archives/hal/2008-May/011560.html">deprecated</a>.
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</p>
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<p>
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UPower is also useful to control the
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<a href="http://blogs.gnome.org/hughsie/2008/11/06/devicekit-power-latency-control/">
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latency of different operations</a> on your computer,
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which enables you to save significant amounts of power.
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Nothing much uses this interface yet, but this is a classic chicken and egg scenario,
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and I think it's important to encourage the egg to lay a chicken.
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Please report any problems to the
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<a href="https://bugs.freedesktop.org/enter_bug.cgi?product=upower">Freedesktop</a> bugzilla
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or send a mail to the
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<a href="http://lists.freedesktop.org/mailman/listinfo/devkit-devel">DeviceKit</a>
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mailing list for discussion.
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</p>
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<p>
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Documentation is available <a href="docs/">here</a>.
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</p>
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<p>
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Releases are available <a href="releases/">here</a>.
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</p>
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<p>
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The source is managed using Git.
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You can <a href="http://cgit.freedesktop.org/upower/">browse</a> the
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repository using cgit or clone it using the following command:
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</p>
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<pre>
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$ git clone git://anongit.freedesktop.org/upower
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</pre>
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<p class="footer">
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Copyright <a href="mailto:richard@hughsie.com">Richard Hughes 2007-2010</a><br>
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<a href="http://validator.w3.org/check/referer">Optimized</a>
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for <a href="http://www.w3.org/">standards</a>.
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</p>
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</body>
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</html>
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