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58 lines
1.9 KiB
Plaintext
58 lines
1.9 KiB
Plaintext
<page xmlns="http://projectmallard.org/1.0/"
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xmlns:its="http://www.w3.org/2005/11/its"
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type="topic"
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id="introduction">
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<info>
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<link type="guide" xref="index"/>
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<!--
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<link type="guide" xref="index#features"/>
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<link type="seealso" xref="anotherpageid"/>
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-->
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<revision pkgversion="3.20" date="2016-04-04" status="stub" />
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<credit type="author">
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<name>Christian Hergert</name>
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<email its:translate="no">christian@hergert.me</email>
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<years>2016</years>
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</credit>
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<include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude"/>
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<desc>Welcome to <app>Sysprof</app>!</desc>
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</info>
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<title>Introduction</title>
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<p><app>Sysprof</app> is a system profiler for Linux that targets
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the GNOME desktop.</p>
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<section id="what-is-a-profiler">
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<info>
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<link type="guide" xref="index"/>
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<desc>Differences between tracing and sampling</desc>
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</info>
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<title>What is a Profiler?</title>
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<p>A profiler is an application that records information about an
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application or system while it runs. That information can be explored to
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gain insight into how the application could be changed to perform
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better.</p>
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<p>Two common categories of software profilers exist, commonly referred
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to as either tracing or sampling profilers. What is meant by tracing
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profiler is that every function call executed by the program is known to the
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profiler. A sampling profiler works by inspecting the state of the
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program on a regular frequency and therefore does not see every function
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call executed by the program.</p>
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<p>Both tracing and sampling profilers have their advantages. A
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notable advantage of a sampling profiler is that the overhead is much
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less than that of a tracing profiler, making it easier to use for
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software that requires interactivity.</p>
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<p><app>Sysprof</app> is a sampling profiler.</p>
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</section>
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</page>
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