forked from brl/citadel
40 lines
1.1 KiB
XML
40 lines
1.1 KiB
XML
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<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"
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[<!ENTITY % poky SYSTEM "../poky.ent"> %poky; ] >
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<chapter id='profile-manual-examples'>
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<title>Real-World Examples</title>
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<para>
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This chapter contains real-world examples.
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</para>
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<section id='slow-write-speed-on-live-images'>
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<title>Slow Write Speed on Live Images</title>
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<para>
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In one of our previous releases (denzil), users noticed that booting
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off of a live image and writing to disk was noticeably slower.
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This included the boot itself, especially the first one, since first
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boots tend to do a significant amount of writing due to certain
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post-install scripts.
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</para>
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<para>
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The problem (and solution) was discovered by using the Yocto tracing
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tools, in this case 'perf stat', 'perf script', 'perf record'
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and 'perf report'.
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</para>
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<para>
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See all the unvarnished details of how this bug was diagnosed and
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solved here: Yocto Bug #3049
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</para>
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</section>
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</chapter>
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<!--
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vim: expandtab tw=80 ts=4
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-->
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