From 6a3b6af43583312b18dcae4d63d4f40737eff771 Mon Sep 17 00:00:00 2001 From: Manuel Canales Esparcia Date: Sun, 15 Jan 2006 12:10:43 +0000 Subject: Indented chapter 04. git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@7275 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689 --- chapter04/aboutsbus.xml | 71 ++++++++++++++++++++++++++----------------------- 1 file changed, 37 insertions(+), 34 deletions(-) (limited to 'chapter04/aboutsbus.xml') 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 @@ - %general-entities; ]> + -About SBUs - - -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. - -The SBU measure works as follows. The first package to be compiled -from this book is Binutils in . 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. - -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 -approximately 45 minutes to build this example package. -Fortunately, most build times are shorter than the one for Binutils. - -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. - -To view actual timings for a number of specific machines, we recommend -The LinuxFromScratch SBU Home Page at . + + + About SBUs + + 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. + + The SBU measure works as follows. The first package to be compiled + from this book is Binutils in . 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. + + 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 + approximately 45 minutes to build this example package. + Fortunately, most build times are shorter than the one for Binutils. + + 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. + + To view actual timings for a number of specific machines, we recommend + The LinuxFromScratch SBU Home Page at . -- cgit v1.2.3-54-g00ecf