1 files changed, 0 insertions, 160 deletions

diff --git a/documentation/dev-manual/dev-manual-start.xml b/documentation/dev-manual/dev-manual-start.xml
index 201cbe7340..d8726b4857 100644
--- a/documentation/dev-manual/dev-manual-start.xml
+++ b/documentation/dev-manual/dev-manual-start.xml
@@ -1080,166 +1080,6 @@
     </section>
 </section>
 
-<section id='speeding-up-the-build'>
-    <title>Speeding Up the Build</title>
-
-    <para>
-        Build time can be an issue.
-        By default, the build system uses simple controls to try and maximize
-        build efficiency.
-        In general, the default settings for all the following variables
-        result in the most efficient build times when dealing with single
-        socket systems (i.e. a single CPU).
-        If you have multiple CPUs, you might try increasing the default
-        values to gain more speed.
-        See the descriptions in the glossary for each variable for more
-        information:
-        <itemizedlist>
-            <listitem><para>
-                <ulink url='&YOCTO_DOCS_REF_URL;#var-BB_NUMBER_THREADS'><filename>BB_NUMBER_THREADS</filename>:</ulink>
-                The maximum number of threads BitBake simultaneously executes.
-                </para></listitem>
-            <listitem><para>
-                <ulink url='&YOCTO_DOCS_BB_URL;#var-BB_NUMBER_PARSE_THREADS'><filename>BB_NUMBER_PARSE_THREADS</filename>:</ulink>
-                The number of threads BitBake uses during parsing.
-                </para></listitem>
-            <listitem><para>
-                <ulink url='&YOCTO_DOCS_REF_URL;#var-PARALLEL_MAKE'><filename>PARALLEL_MAKE</filename>:</ulink>
-                Extra options passed to the <filename>make</filename> command
-                during the
-                <ulink url='&YOCTO_DOCS_REF_URL;#ref-tasks-compile'><filename>do_compile</filename></ulink>
-                task in order to specify parallel compilation on the
-                local build host.
-                </para></listitem>
-            <listitem><para>
-                <ulink url='&YOCTO_DOCS_REF_URL;#var-PARALLEL_MAKEINST'><filename>PARALLEL_MAKEINST</filename>:</ulink>
-                Extra options passed to the <filename>make</filename> command
-                during the
-                <ulink url='&YOCTO_DOCS_REF_URL;#ref-tasks-install'><filename>do_install</filename></ulink>
-                task in order to specify parallel installation on the
-                local build host.
-                </para></listitem>
-        </itemizedlist>
-        As mentioned, these variables all scale to the number of processor
-        cores available on the build system.
-        For single socket systems, this auto-scaling ensures that the build
-        system fundamentally takes advantage of potential parallel operations
-        during the build based on the build machine's capabilities.
-    </para>
-
-    <para>
-        Following are additional factors that can affect build speed:
-        <itemizedlist>
-            <listitem><para>
-                File system type:
-                The file system type that the build is being performed on can
-                also influence performance.
-                Using <filename>ext4</filename> is recommended as compared
-                to <filename>ext2</filename> and <filename>ext3</filename>
-                due to <filename>ext4</filename> improved features
-                such as extents.
-                </para></listitem>
-            <listitem><para>
-                Disabling the updating of access time using
-                <filename>noatime</filename>:
-                The <filename>noatime</filename> mount option prevents the
-                build system from updating file and directory access times.
-                </para></listitem>
-            <listitem><para>
-                Setting a longer commit:
-                Using the "commit=" mount option increases the interval
-                in seconds between disk cache writes.
-                Changing this interval from the five second default to
-                something longer increases the risk of data loss but decreases
-                the need to write to the disk, thus increasing the build
-                performance.
-                </para></listitem>
-            <listitem><para>
-                Choosing the packaging backend:
-                Of the available packaging backends, IPK is the fastest.
-                Additionally, selecting a singular packaging backend also
-                helps.
-                </para></listitem>
-            <listitem><para>
-                Using <filename>tmpfs</filename> for
-                <ulink url='&YOCTO_DOCS_REF_URL;#var-TMPDIR'><filename>TMPDIR</filename></ulink>
-                as a temporary file system:
-                While this can help speed up the build, the benefits are
-                limited due to the compiler using
-                <filename>-pipe</filename>.
-                The build system goes to some lengths to avoid
-                <filename>sync()</filename> calls into the
-                file system on the principle that if there was a significant
-                failure, the
-                <ulink url='&YOCTO_DOCS_REF_URL;#build-directory'>Build Directory</ulink>
-                contents could easily be rebuilt.
-                </para></listitem>
-            <listitem><para>
-                Inheriting the
-                <ulink url='&YOCTO_DOCS_REF_URL;#ref-classes-rm-work'><filename>rm_work</filename></ulink>
-                class:
-                Inheriting this class has shown to speed up builds due to
-                significantly lower amounts of data stored in the data
-                cache as well as on disk.
-                Inheriting this class also makes cleanup of
-                <ulink url='&YOCTO_DOCS_REF_URL;#var-TMPDIR'><filename>TMPDIR</filename></ulink>
-                faster, at the expense of being easily able to dive into the
-                source code.
-                File system maintainers have recommended that the fastest way
-                to clean up large numbers of files is to reformat partitions
-                rather than delete files due to the linear nature of
-                partitions.
-                This, of course, assumes you structure the disk partitions and
-                file systems in a way that this is practical.
-                </para></listitem>
-        </itemizedlist>
-        Aside from the previous list, you should keep some trade offs in
-        mind that can help you speed up the build:
-        <itemizedlist>
-            <listitem><para>
-                Remove items from
-                <ulink url='&YOCTO_DOCS_REF_URL;#var-DISTRO_FEATURES'><filename>DISTRO_FEATURES</filename></ulink>
-                that you might not need.
-                </para></listitem>
-            <listitem><para>
-                Exclude debug symbols and other debug information:
-                If you do not need these symbols and other debug information,
-                disabling the <filename>*-dbg</filename> package generation
-                can speed up the build.
-                You can disable this generation by setting the
-                <ulink url='&YOCTO_DOCS_REF_URL;#var-INHIBIT_PACKAGE_DEBUG_SPLIT'><filename>INHIBIT_PACKAGE_DEBUG_SPLIT</filename></ulink>
-                variable to "1".
-                </para></listitem>
-            <listitem><para>
-                Disable static library generation for recipes derived from
-                <filename>autoconf</filename> or <filename>libtool</filename>:
-                Following is an example showing how to disable static
-                libraries and still provide an override to handle exceptions:
-                <literallayout class='monospaced'>
-     STATICLIBCONF = "--disable-static"
-     STATICLIBCONF_sqlite3-native = ""
-     EXTRA_OECONF += "${STATICLIBCONF}"
-                </literallayout>
-                <note><title>Notes</title>
-                    <itemizedlist>
-                        <listitem><para>
-                            Some recipes need static libraries in order to work
-                            correctly (e.g. <filename>pseudo-native</filename>
-                            needs <filename>sqlite3-native</filename>).
-                            Overrides, as in the previous example, account for
-                            these kinds of exceptions.
-                            </para></listitem>
-                        <listitem><para>
-                            Some packages have packaging code that assumes the
-                            presence of the static libraries.
-                            If so, you might need to exclude them as well.
-                            </para></listitem>
-                    </itemizedlist>
-                </note>
-            </para></listitem>
-        </itemizedlist>
-    </para>
-</section>
 </chapter>
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