Changeset 0678bd4 for chapter04

Timestamp:

03/02/2023 03:16:03 AM (16 months ago)

Author:

Xi Ruoyao <xry111@…>

Branches:

xry111/clfs-ng

Children:

5c3ffcb9

Parents:

985d253 (diff), 55a4043 (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge remote-tracking branch 'origin/trunk' into xry111/clfs-ng

File:

• chapter04/aboutsbus.xml (modified) (2 diffs)

chapter04/aboutsbus.xml

@@ -14 +14 @@
   it takes to compile and install each package. Because Linux From
   Scratch can be built on many different systems, it is impossible to
-  provide absolute 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,
+  provide absolute time estimates. The biggest package (gcc) will
+  take approximately 5 minutes on the fastest systems, but could take
+  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
-  is binutils in <xref linkend="chapter-cross-tools"/>. The
-  time it takes to compile this package is what we will refer to as the
-  Standard Build Unit or SBU. All other compile times will be expressed in
-  terms of this unit of time.</para>
+  <para>The SBU measure works as follows. The first package to be compiled is
+  binutils in <xref linkend="chapter-cross-tools"/>. The time it takes to
+  compile using one core is what we will refer to as the Standard
+  Build Unit or SBU. All other compile times will be expressed in terms of this
+  unit of time.</para>
 
   <para>For example, consider a package whose compilation time is 4.5
@@ -64 +64 @@
     interleaved.  If you run into a problem with a build step, revert to a
     single processor build to properly analyze the error messages.</para>
+
+    <para>The times presented here are based upon using four cores (-j4). The
+    times in Chapter 8 also include the time to run the regression tests for
+    the package unless specified otherwise.</para>
+
   </note>