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author | Gerard Beekmans <gerard@linuxfromscratch.org> | 2004-08-29 18:36:34 +0000 |
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committer | Gerard Beekmans <gerard@linuxfromscratch.org> | 2004-08-29 18:36:34 +0000 |
commit | 69993f4157abb6a083d814d03b497375a0ef978c (patch) | |
tree | b2f52f3f6c49fa46a817db042efb7a7c5a5cf346 /chapter04/aboutsbus.xml | |
parent | ec0a37e67d49746f952e4955093765d69bb39d01 (diff) |
Second round of edits for final release
git-svn-id: http://svn.linuxfromscratch.org/LFS/branches/testing/BOOK@4066 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
Diffstat (limited to 'chapter04/aboutsbus.xml')
-rw-r--r-- | chapter04/aboutsbus.xml | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/chapter04/aboutsbus.xml b/chapter04/aboutsbus.xml index 1100b6e20..85e283059 100644 --- a/chapter04/aboutsbus.xml +++ b/chapter04/aboutsbus.xml @@ -7,16 +7,16 @@ <title>About SBUs</title> <?dbhtml filename="aboutsbus.html"?> -<para>Most people would like to know beforehand approximately how long +<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 <emphasis>Static Binutils Unit</emphasis> (SBU) measure will be +the Static Binutils Unit (SBU) measure will be used instead.</para> -<para>The SBU measure works like this?the first package to be compiled +<para>The SBU measure works as follows. The first package to be compiled from this book is the statically-linked Binutils in <xref linkend="chapter-temporary-tools"/>. The time it takes to compile this package is what will be referred to as the Static Binutils Unit @@ -27,23 +27,23 @@ time.</para> SBUs. This means that if a system took 10 minutes to compile and install the static Binutils, it will take <emphasis>approximately</emphasis> 45 minutes to build this example -package. Fortunately, most build times are much shorter than the one +package. Fortunately, most build times are shorter than the one for Binutils.</para> -<para>Please note that if the system compiler on the host is GCC-2 based, the +<para>Please note that if the system compiler on the host is gcc-2.x based, the SBUs listed may be somewhat understated. This is because the SBU is based on the very first package, compiled with the old GCC, while the rest of the system is compiled with the newer GCC-&gcc-version; (which is known to be approximately 30 percent slower). SBUs are also not -highly accurate for SMP-based machines.</para> +highly accurate for Symmetric Multi-Processor (SMP)-based machines.</para> <para>To view actual timings for specific machines, we recommend <ulink url="&lfs-root;~bdubbs/"/>.</para> -<para>In general, SBUs are inaccurate because they depend on many -factors, not just the GCC version. The only reason they are provided -is to give some kind of indication of how long it might take to -install a package, but the numbers can be off by as much as dozens of +<para>In general, SBUs are not very accurate because they depend on many +factors, not just the GCC version. 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> </sect1> |