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authorbmah <bmah@FreeBSD.org>2003-12-02 05:54:35 +0000
committerbmah <bmah@FreeBSD.org>2003-12-02 05:54:35 +0000
commit22c37d9110389229132a98c22888aa3c9618a623 (patch)
treee996384386c4507ec9178b30e611a67156cdfeb1
parent9d12741630d0b87d30301063746bdd84e5e075e3 (diff)
downloadFreeBSD-src-22c37d9110389229132a98c22888aa3c9618a623.zip
FreeBSD-src-22c37d9110389229132a98c22888aa3c9618a623.tar.gz
IFP4: Update the Early Adopters Guide to bring it up to the state
of the world roughly as of the upcoming 5.2 release. Approved by: re (implicitly)
-rw-r--r--release/doc/en_US.ISO8859-1/early-adopter/article.sgml129
1 files changed, 90 insertions, 39 deletions
diff --git a/release/doc/en_US.ISO8859-1/early-adopter/article.sgml b/release/doc/en_US.ISO8859-1/early-adopter/article.sgml
index 796ea7e..b565091 100644
--- a/release/doc/en_US.ISO8859-1/early-adopter/article.sgml
+++ b/release/doc/en_US.ISO8859-1/early-adopter/article.sgml
@@ -22,6 +22,8 @@
<!ENTITY release.4x "4.<replaceable>X</replaceable>">
<!ENTITY release.5x "5.<replaceable>X</replaceable>">
+<!ENTITY release.4last "4.9-RELEASE">
+<!ENTITY release.5branchpoint "5.3-RELEASE">
]>
@@ -84,11 +86,11 @@
with) possible regressions in the newer releases.
Specifically, for more conservative users, we recommend
running &release.4x; releases (such as
- 4.8-RELEASE) for the near-term
+ &release.4last;) for the near-term
future. We feel that such users are probably best served by
upgrading to &release.5x; only after a
5-STABLE development branch has been created; this may be around
- the time of 5.2-RELEASE.</para>
+ the time of &release.5branchpoint;.</para>
<para>(&os; &release.5x; suffers from what has been described as a
<quote>chicken and egg</quote> problem. The entire project has
@@ -132,9 +134,10 @@
it. This branch has the tag <literal>RELENG_4</literal> in the
CVS repository.</para>
- <para>&os; 5.0 and 5.1 are based on the CURRENT branch. These
- are the first releases from this branch in over two years (the
- last was &os; 4.0, in March 2000).</para>
+ <para>&os; 5.0, 5.1, and 5.2 are based on the CURRENT branch. The
+ first of these releases was made after over two years of development
+ (prior to these, the
+ last release from HEAD was &os; 4.0, in March 2000).</para>
<para>At some point after the release of &os; 5.0, a
<quote>5-STABLE</quote> branch will be created in the &os;
@@ -154,8 +157,8 @@
there will be
multiple releases in the &release.5x; series
before this happens; we estimate
- that the 5-STABLE branch will be created sometime after
- 5.2-RELEASE.</para>
+ that the 5-STABLE branch will be created around the time of
+ &release.5branchpoint;.</para>
<para>More information on &os; release engineering processes can be found
on the <ulink
@@ -183,28 +186,33 @@
<itemizedlist>
<listitem>
<para>SMPng: The <quote>next generation</quote> support for
- SMP machines (work in progress). There is now partial
- support for multiple processors to be running in the kernel
- at the same time. This work is ongoing.</para>
+ SMP machines (work in progress).
+ Ongoing work aims to perform fine-grained locking of various
+ kernel subsystems to increase the number of threads of
+ execution that can be running in the kernel. More
+ information can be found on the
+ <ulink url="http://www.FreeBSD.org/smp/">FreeBSD SMP
+ Project</ulink> page.</para>
</listitem>
<listitem>
<para>KSE: Kernel Scheduled Entities allow a single process
to have multiple kernel-level threads, similar to Scheduler
- Activations. The (experimental) <filename>libkse</filename>
- and <filename>libthr</filename> libraries make this
- feature available to multi-threaded userland programs.</para>
+ Activations. The <filename>libkse</filename>
+ and <filename>libthr</filename> threading libraries make this
+ feature available to multi-threaded userland programs,
+ using the &man.pthread.3; API.</para>
</listitem>
<listitem>
- <para>New architectures: Support for the &sparc64; and ia64
- architectures, in addition to the &i386;, pc98, and
+ <para>New architectures: Support for the sparc64, ia64, and amd64
+ architectures, in addition to the i386, pc98, and
alpha.</para>
</listitem>
<listitem>
<para>GCC: The compiler toolchain is now based on GCC
- 3.2.2, rather than GCC
+ 3.3.<replaceable>X</replaceable>, rather than GCC
2.95.<replaceable>X</replaceable>.</para>
</listitem>
@@ -215,7 +223,7 @@
<listitem>
<para>GEOM: A flexible framework for transformations of disk
- I/O requests. An experimental disk encryption facility has
+ I/O requests. The GBDE experimental disk encryption facility has
been developed based on GEOM.</para>
</listitem>
@@ -237,10 +245,14 @@
<para>Cardbus: Support for Cardbus devices.</para>
</listitem>
+ <listitem>
+ <para>Bluetooth: Support for Bluetooth devices.</para>
+ </listitem>
+
</itemizedlist>
<para>A more comprehensive list of new features can be found in
- the release notes for &os; &release.prev; and &os; &release.current;.</para>
+ the release notes for the various &os; &release.5x; releases.</para>
</sect1>
@@ -267,7 +279,10 @@
ABIs/APIs, third-party binary device drivers will require
modifications to work correctly under &os; 5.0. There is
a possibility of more minor ABI/API changes before the
- 5-STABLE branch is created.</para>
+ 5-STABLE branch is created, particularly on newer machine
+ architectures. In some (hopefully rare) cases,
+ user-visible structures may change, requiring recompiling of
+ applications or reinstallation of ports/packages.</para>
</listitem>
<listitem>
@@ -289,32 +304,35 @@
<listitem>
<para>A number of ports and packages do not build or do not
- run correctly under &os; 5.0, whereas they did under &os;
+ run correctly under &os; &release.5x;, whereas they did under &os;
4-STABLE. Generally these problems are caused by compiler
- toolchain changes or cleanups of header files.</para>
+ toolchain changes or cleanups of header files. In some
+ cases they are caused by changes in kernel or device
+ support.</para>
</listitem>
<listitem>
<para>Many &os; &release.5x; features are
seeing wide exposure for the first time. Many of these
features (such as SMPng) have broad impacts on the
- kernel.</para>
+ kernel, and it may be difficult to gauge their effects on
+ stability and performance.</para>
</listitem>
<listitem>
<para>A certain amount of debugging and diagnostic code is
- still in place to help track down problems in &os; 5.0's new
- features. This may cause &os; 5.0 to perform more slowly
+ still in place to help track down problems in &os; &release.5x;'s new
+ features. This may cause &os; &release.5x; to perform more slowly
than 4-STABLE.</para>
</listitem>
<listitem>
<para>Features are only added to the 4-STABLE development
branch after a <quote>settling time</quote> in -CURRENT.
- &os; 5.0 does not have the stabilizing influence of a
+ &os; &release.5x; does not have the stabilizing influence of a
-STABLE branch. (It is likely that the 5-STABLE development
branch will be created sometime after
- 5.2-RELEASE.)</para>
+ &release.5branchpoint;.)</para>
</listitem>
<listitem>
@@ -330,20 +348,25 @@
<para>Because a number of these drawbacks affect system stability, the
release engineering team recommends that more conservative sites
and users stick to releases based on the 4-STABLE branch until
- the &release.5x; series is more polished.</para>
+ the &release.5x; series is more polished. While we believe that
+ many initial problems with stability have been fixed, some
+ issues with performance are still being addressed by
+ works-in-progress. We also note that best common practices in
+ system administration call for trying operating system upgrades
+ in a test environment before upgrading one's production, or
+ <quote>mission-critical</quote> systems.</para>
</sect1>
<sect1 id="plans-stable">
<title>Plans for the 4-STABLE Branch</title>
- <para>The release of &os; 5.0 does not mean the end of the
- 4-STABLE branch. Indeed, &os; 4.8 was released two months after
- 5.0, in April 2003. There will most likely be at least one more release on
- this branch, namely 4.9-RELEASE, currently scheduled for summer
- 2003.
- A 4.10-RELEASE is a likely possibility as well.
- Future releases from this branch will
+ <para>It is important to note that even though releases are being
+ made in the &release.5x; series, support for &release.4x;
+ releases will continue for some time.
+ Indeed, &os; 4.8 was released two months after
+ 5.0, in April 2003, followed by 4.9, in October 2003.
+ Future releases from the 4-STABLE branch (if any) will
depend on several factors. The most important of these
is the existence and stability of the 5-STABLE branch. If
CURRENT is not sufficiently stable to allow the creation of a
@@ -358,7 +381,12 @@
account user demand for future 4-STABLE releases. This demand,
however, will need to be balanced with release engineering
resources (particularly developers' time, computing resources, and mirror
- archive space).</para>
+ archive space). We note that in general, the &os; community
+ (both users and developers) has shown a preference for
+ moving forward with new features in
+ the &release.5x; branch and beyond, due to the difficulty
+ involved in backporting (and maintaining) new functionality in
+ &release.4x;.</para>
<para>The &a.security-officer; will continue to support releases
made from the 4-STABLE branch in accordance with their published
@@ -369,6 +397,20 @@
to security advisories and security fixes. At its discretion,
the team may support other releases for specific issues.</para>
+ <para>At this point, the release engineering team has no specific
+ plans for future releases from the 4-STABLE development branch.
+ It seems likely that any future releases (if
+ any) from this branch will be lightweight,
+ <quote>point</quote> releases. These will probably carry
+ 4.9.<replaceable>X</replaceable> version numbers, to indicate
+ that they are not intended to provide large amount of new
+ functionality compared to &release.4last;. In general, these
+ releases will emphasize security fixes, bug fixes, and device
+ driver updates (particularly to accommodate new hardware easily
+ supported by existing drivers). Major new features (especially those
+ requiring infrastructure support added in &release.5x;) will
+ probably not be added in these releases.</para>
+
</sect1>
<sect1 id="upgrade">
@@ -399,12 +441,15 @@
recommended. In particular, a binary upgrade will leave
behind a number of files that are present in &os;
&release.4x; but not in &release.5x;. These obsolete
- files may create some problems.</para>
+ files may create some problems. Examples of these files
+ include old C++ headers, programs moved to the Ports
+ Collection, or shared libraries that have moved to support
+ dynamically-linked root filesystem executables.</para>
<para>On the &i386; and pc98 platforms, a UserConfig utility
exists on 4-STABLE to allow boot-time configuration of ISA
devices when booting from installation media. Under &os;
- 5.0, this functionality has been replaced in part by the
+ &release.5x;, this functionality has been replaced in part by the
&man.device.hints.5; mechanism (it allows specifying the same
parameters, but with a very different interface).</para>
@@ -455,8 +500,14 @@
&release.4x; executables under
&release.5x;, but this requires the
<filename>compat4x</filename> distribution to be installed.
- Thus, using old ports <emphasis>may</emphasis> be
- possible.</para>
+ Using old ports may be possible in some cases, although there
+ are a number of known cases of backward incompatibility. As an
+ example, the
+ <filename role="package">devel/gnomevfs2</filename>,
+ <filename role="package">mail/postfix</filename>, and
+ <filename role="package">security/cfs</filename> ports need to
+ be recompiled due to changes in the <literal>statfs</literal>
+ structure.</para>
<para>When installing or upgrading over the top of an existing
4-STABLE-based system, it is extremely important to clear out
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