gronod/lfs
1
0
Fork 0
mirror of https://git.linuxfromscratch.org/lfs.git synced 2025-03-06 06:14:47 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add clarifying paragraph about SBUs.

Browse Source 
git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@3016 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
This commit is contained in:
Greg Schafer 2003-10-21 00:38:06 +00:00
parent 1a38cda977
commit 0dc87e046c
1 changed files with 14 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
chapter02/aboutsbus.xml
View File

@ -16,15 +16,21 @@ statically linked Binutils in Chapter 5, and the time it takes to compile this
package is what we call the "Static Binutils Unit" or "SBU". All other compile package is what we call the "Static Binutils Unit" or "SBU". All other compile
times will be expressed relative to this time.</para> times will be expressed relative to this time.</para>
<para>For example, the time it takes to build the static version of GCC is 3.9 <para>For example, the time it takes to build the static version of GCC is
SBU. This means that if on your system it took 10 minutes to compile and &gcc-time-tools-pass1;s. This means that if on your system it took 10 minutes
install the static Binutils, then you know it will take nearly 40 minutes to to compile and install the static Binutils, then you know it will take
build the static GCC. Fortunately, most build times are much shorter than the approximately 45 minutes to build the static GCC. Fortunately, most build times
one of Binutils.</para> are much shorter than the one of Binutils.</para>
<para>Note that SBUs don't work well for SMP-based machines. But if you're so <para>Note that if the system compiler on your host is GCC-2 based, the SBUs
lucky as to have multiple processors, chances are that your system is so fast listed may end up being very inaccurate. This is because the SBU is based on
that you don't mind.</para> 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% slower.</para>
<para>Also note that SBUs don't work well for SMP-based machines. But if you're
so lucky as to have multiple processors, chances are that your system is so fast
that you won't mind.</para>
</sect1> </sect1>