Changeset 2f2c36fc

Timestamp:

10/18/2014 12:56:48 AM (10 years ago)

Author:

Christopher Gregory <cjg@…>

Branches:

kde5-14686, systemd-13485

Children:

e44f4b8f

Parents:

b271ea9

Message:

Merged conventions update from trunk.

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/branches/systemd@14664 af4574ff-66df-0310-9fd7-8a98e5e911e0

Location:

introduction/welcome

Files:

• changelog.xml (modified) (1 diff)
• conventions.xml (modified) (1 diff)

introduction/welcome/changelog.xml

@@ -58 +58 @@
           <para>[fernando] - Update to dovecot-2.2.14.  Fixes
           <ulink url="&blfs-ticket-root;5673">#5673</ulink>.</para>
+        </listitem>
+        <listitem>
+          <para>[bdubbs] - Add an explanation to the Conventions page
+          about SBU times when using parallel build procedures.</para>
         </listitem>
       </itemizedlist>

introduction/welcome/conventions.xml

@@ -124 +124 @@
   </sect2>
 
+  <sect2>
+  <title>SBU values in BLFS</title>
+
+    <para>As in LFS, each package in BLFS has a build time listed in Standard
+    Build Units (SBUs).   These times are relative to the time it took to build
+    binutils in LFS and are intended to provide some insight into how long it
+    will take to build a package. Most times listed are for a single processor
+    or core to build the package. In some cases, large, long running builds
+    tested on multi-core systems have SBU times listed with comments such
+    as '(parallelism=4)'.  These values indicate testing was done using
+    multiple cores.  Note that while this speeds up the build on systems with
+    the appropriate hardware, the speedup is not linear and to some extent
+    depends on the individual package and specific hardware used.  </para>
+
+    <para>Some packages do not support parallel builds and using -j1 for the
+    make command is required.  Packages that are known to have such limits are
+    marked as such in the text.</para>
+
+  </sect2>
+
 </sect1>