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Diffstat (limited to 'chapter04/aboutsbus.xml')
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diff --git a/chapter04/aboutsbus.xml b/chapter04/aboutsbus.xml index 28d83c01c..8383c6ffe 100644 --- a/chapter04/aboutsbus.xml +++ b/chapter04/aboutsbus.xml @@ -1,42 +1,45 @@ <?xml version="1.0" encoding="ISO-8859-1"?> -<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [ +<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [ <!ENTITY % general-entities SYSTEM "../general.ent"> %general-entities; ]> + <sect1 id="prepare-aboutsbus"> -<title>About SBUs</title> -<?dbhtml filename="aboutsbus.html"?> - -<para>Many people would like to know beforehand approximately how long -it takes to compile and install each package. Because Linux From -Scratch can be built on many different systems, it is impossible to -provide accurate time estimates. The biggest package (Glibc) will -take approximately 20 minutes on the fastest systems, but could take -up to three days on slower systems! Instead of providing actual times, -the Standard Build Unit (SBU) measure will be -used instead.</para> - -<para>The SBU measure works as follows. The first package to be compiled -from this book is Binutils in <xref linkend="chapter-temporary-tools"/>. The -time it takes to compile this package is what will be referred to as the -Standard Build Unit or SBU. All other compile times will be expressed relative -to this time.</para> - -<para>For example, consider a package whose compilation time is 4.5 -SBUs. This means that if a system took 10 minutes to compile and -install the first pass of Binutils, it will take -<emphasis>approximately</emphasis> 45 minutes to build this example package. -Fortunately, most build times are shorter than the one for Binutils.</para> - -<para>In general, SBUs are not entirely accurate because they depend on many -factors, including the host system's version of GCC. Note that on Symmetric -Multi-Processor (SMP)-based machines, SBUs are even less accurate. They are -provided here 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> - -<para>To view actual timings for a number of specific machines, we recommend -The LinuxFromScratch SBU Home Page at <ulink url="&lfs-root;~bdubbs/"/>.</para> + <?dbhtml filename="aboutsbus.html"?> + + <title>About SBUs</title> + + <para>Many people would like to know beforehand approximately how long + it takes to compile and install each package. Because Linux From + Scratch can be built on many different systems, it is impossible to + provide accurate time estimates. The biggest package (Glibc) will + take approximately 20 minutes on the fastest systems, but could take + up to three days on slower systems! Instead of providing actual times, + the Standard Build Unit (SBU) measure will be + used instead.</para> + + <para>The SBU measure works as follows. The first package to be compiled + from this book is Binutils in <xref linkend="chapter-temporary-tools"/>. The + time it takes to compile this package is what will be referred to as the + Standard Build Unit or SBU. All other compile times will be expressed relative + to this time.</para> + + <para>For example, consider a package whose compilation time is 4.5 + SBUs. This means that if a system took 10 minutes to compile and + install the first pass of Binutils, it will take + <emphasis>approximately</emphasis> 45 minutes to build this example package. + Fortunately, most build times are shorter than the one for Binutils.</para> + + <para>In general, SBUs are not entirely accurate because they depend on many + factors, including the host system's version of GCC. Note that on Symmetric + Multi-Processor (SMP)-based machines, SBUs are even less accurate. They are + provided here 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> + + <para>To view actual timings for a number of specific machines, we recommend + The LinuxFromScratch SBU Home Page at <ulink url="&lfs-root;~bdubbs/"/>.</para> </sect1> |