poky/documentation/profile-manual/profile-manual-examples.xml

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<chapter id='profile-manual-examples'>

<title>Real-World Examples</title>

<para>
    This chapter contains real-world examples.
</para>

<section id='slow-write-speed-on-live-images'>
    <title>Slow Write Speed on Live Images</title>

    <para>
        In one of our previous releases (denzil), users noticed that booting
        off of a live image and writing to disk was noticeably slower.
        This included the boot itself, especially the first one, since first
        boots tend to do a significant amount of writing due to certain
        post-install scripts.
    </para>

    <para>
        The problem (and solution) was discovered by using the Yocto tracing
        tools, in this case 'perf stat', 'perf script', 'perf record'
        and 'perf report'.
    </para>

    <para>
        See all the unvarnished details of how this bug was diagnosed and
        solved here: Yocto Bug #3049
    </para>
</section>

</chapter>
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