cross-ng: explain the unchanged SBU values from trunk

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Xi Ruoyao 2022-02-19 13:37:01 +08:00
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@ -36,6 +36,14 @@
to give an estimate of how long it might take to install a package, but the
numbers can vary by as much as dozens of minutes in some cases.</para>
<note>
<para>In the cross edition, the SBUs are kept same as the original LFS
book. They should only be considered as a reference. It obviously does
not make sense to predict the building time in Chapter 7 or 8 with
<quote>1 SBU</quote> measured in Chapter 5, as the target machine and
the machine running the host distro may be completely different.</para>
</note>
<note>
<para>For many modern systems with multiple processors (or cores) the
compilation time for a package can be reduced by performing a "parallel