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|
<?xml version="1.0" encoding="iso-8859-1" ?>
<!DOCTYPE report PUBLIC "-//FreeBSD//DTD FreeBSD XML Database for Status Report//EN"
"http://www.FreeBSD.org/XML/share/xml/statusreport.dtd">
<!-- $FreeBSD$ -->
<report>
<date>
<month>October-December</month>
<year>2005</year>
</date>
<section>
<title>Introduction</title>
<p>This report is about the rather quiet last quarter of 2005, with
the release of FreeBSD 6.0 and the holiday season things evolved in
the background. Nonetheless, most exciting projects hit the tree (or
are going to very soon).</p>
<p>Upcoming events, such as the release of FreeBSD 6.1/5.5 and the
third BSDCan conference with a big developer summit promise to
provide a busier start in 2006. The foundation for upcoming
development, however, are the projects that are described herein.</p>
<p>We hope that you find interesting projects to look at or work on.
The next status report collection will be April 7 2006. We are
looking forward to your report then.</p>
<p>Thanks again to everyone who submitted reports, and thanks to Brad
Davis who stepped up for an extensive spelling and grammar review.
Enjoy reading!</p>
</section>
<category>
<name>proj</name>
<description>Projects</description>
</category>
<category>
<name>doc</name>
<description>Documentation</description>
</category>
<category>
<name>team</name>
<description>FreeBSD team reports</description>
</category>
<category>
<name>kern</name>
<description>Kernel</description>
</category>
<category>
<name>net</name>
<description>Network infrastructure</description>
</category>
<category>
<name>bin</name>
<description>Userland programs</description>
</category>
<category>
<name>arch</name>
<description>Architectures</description>
</category>
<category>
<name>ports</name>
<description>Ports</description>
</category>
<category>
<name>vendor</name>
<description>Vendor / 3rd Party Software</description>
</category>
<category>
<name>misc</name>
<description>Miscellaneous</description>
</category>
<project cat='proj'>
<title>jemalloc</title>
<contact>
<person>
<name>
<given>Jason</given>
<common>Evans</common>
</name>
<email>jasone@FreeBSD.org</email>
</person>
</contact>
<links>
</links>
<body>
<p>libc's malloc implementation has been replaced with an
implementation that is designed to scale well for multi-threaded
applications running on multi-processor systems. This is
accomplished by creating multiple allocation arenas that are
independent of each other, and permanently assigning threads to
these arenas. In the common case, threads do not access the same
allocator arena at the same time, which reduces contention and
cache sloshing.</p>
<p>Single-threaded application performance is approximately
equivalent to what it was with phkmalloc, but for multi-threaded
applications that make heavy use of malloc, the performance
difference can be huge (orders of magnitude).</p>
<p>As with phkmalloc, the new malloc implementation supports
runtime configuration via the MALLOC_OPTIONS environment variable.
See the malloc(3) manpage for details on supported options, as well
as more information about the allocator's architecture.</p>
</body>
</project>
<project cat='bin'>
<title>OpenBSD dhclient</title>
<contact>
<person>
<name>
<given>Brooks</given>
<common>Davis</common>
</name>
<email>brooks@FreeBSD.org</email>
</person>
<person>
<name>
<given>Sam</given>
<common>Leffler</common>
</name>
<email>sam@FreeBSD.org</email>
</person>
</contact>
<links>
</links>
<body>
<p>The OpenBSD rewrite of dhclient has been imported, replacing the
ISC dhclient. The OpenBSD client provides better support for
roaming on wireless networks and a simpler model of operation.
Instead of a single dhclient process per system, there is one per
network interface. This instance automatically goes away in the
even of link loss and is restarted via devd when link is
reacquired. To support this change, many aspects of the network
interface configuration process were overhauled.</p>
<p>Support for adding aliases to DHCP configured interfaces has
been committed to CURRENT and will be merged before 6.1-RELEASE.
Soon work will begin to merge changes from OpenBSD that have taken
place since the initial import.</p>
<p>Work on further interface configuration enhancements is underway
for FreeBSD 7.0.</p>
</body>
</project>
<project cat='net'>
<title>FAST_IPSEC Upgrade</title>
<contact>
<person>
<name>
<given>George</given>
<common>Neville-Neil</common>
</name>
<email>gnn@freebsd.org</email>
</person>
<person>
<name>
<given>Bjoern A.</given>
<common>Zeeb</common>
</name>
<email>bz@freebsd.org</email>
</person>
</contact>
<links>
</links>
<body>
<p>Currently splitting out the rest of the PF_KEY data-structures
from the key database. This will mean the user level applications
and the kernel will not share datastructures and that they can,
hopefully, advance on their own without being in lockstep.</p>
</body>
<help>
<task>Calculate diffs between Kame IPv4 version of IPSec and
FAST_IPSEC and upgrade FAST to the latest standards.</task>
<task>Add IPv6 support to FAST_IPSEC.</task>
</help>
</project>
<project cat='doc'>
<title>FreeBSD list of projects and ideas for volunteers (TODO list
for volunteers)</title>
<contact>
<person>
<name>
<given>Joel</given>
<common>Dahl</common>
</name>
<email>joel@FreeBSD.org</email>
</person>
<person>
<name>
<given>Alexander</given>
<common>Leidinger</common>
</name>
<email>netchild@FreeBSD.org</email>
</person>
</contact>
<links>
<url href="http://www.FreeBSD.org/projects/ideas/" />
</links>
<body>
<p>The "TODO list for volunteers" is now committed as the "FreeBSD
list of projects and ideas for volunteers". So far the interest in
the list is high and some volunteers already took the opportunity
to start tackling some of the entries.</p>
<p>Unfortunately the FreeBSD project does not have enough human
resources to provide a technical contact for every entry.
Interested volunteers should not be afraid to try to come up with a
solution for an entry without a technical contact. The people on
the hackers and current mailing list are typically very helpful
regarding answering specific questions (as long as they know the
answer...).</p>
<p>We are looking forward to hear about new ideas, people willing
to be technical contacts for generic topics (e.g. USB) or specific
entries (already existing or newly created), suggestions for
existing entries or completion reports for (parts of) an entry.</p>
</body>
<help>
<task>Add more ideas.</task>
<task>Find more technical contacts.</task>
</help>
</project>
<project cat='net'>
<title>KAME Project Status Report</title>
<contact>
<person>
<name>
<given>SUZUKI</given>
<common>Shinsuke</common>
</name>
<email>suz@FreeBSD.org</email>
</person>
</contact>
<links>
<url href="http://www.kame.net/">KAME Project Homepage</url>
<url href="http://www.kame.net/newsletter/20051107/" />
<url
href="http://www.wide.ad.jp/news/press/20051107-KAME-e.html" />
<url
href="http://ipv6style.jp/en/special/kame/20051205/index.shtml" />
</links>
<body>
<p>Most of the latest KAME code has been merged to 7-current and
6-stable, to prepare for the project conclusion in March 2006. For
the same reason, we moved some ports applications (security/racoon,
net/pim6sd, net/pim6dd, net/dhcp6) from KAME to
sourceforge.net.</p>
<p>Some of the items (e.g. IGMPv3/MLDv2, Mobile-IPv6/NEMO, SCTP,
DCCP, ISATAP) are not merged yet from the latest KAME code for
several reasons. Other projects will continue to merge their
work.</p>
</body>
<help>
<task>remove __P() macros</task>
<task>set net.inet6.ip6.kame_version to a more appropriate date
:-)</task>
<task>update src/sys/netinet6/README</task>
</help>
</project>
<project cat='kern'>
<title>Sound subsystem improvements</title>
<contact>
<person>
<name>
<given>Ariff</given>
<common>Abdullah</common>
</name>
<email>ariff@FreeBSD.org</email>
</person>
<person>
<name>
<given>Alexander</given>
<common>Leidinger</common>
</name>
<email>netchild@FreeBSD.org</email>
</person>
<person>
<name>
<given>Multimedia</given>
<common>Mailinglist</common>
</name>
<email>multimedia@FreeBSD.org</email>
</person>
</contact>
<links>
<url href="http://people.FreeBSD.org/~ariff/">Patches for
RELENG_5.</url>
<url href="http://www.FreeBSD.org/projects/ideas/">The FreeBSD
Project Ideas List.</url>
</links>
<body>
<p>A lot of changes have taken place in the sound system since the
last status report. They range from less hiccups and distortion by
disk accesses and/or driver bugs to new and improved features
(software volume control implemented for soundcards which do not
have hardware volume control). Additionally a new driver
(snd_atiixp) has seen the light and a lot of problem reports were
fixed.</p>
<p>Most of those changes and the changes mentioned in the previous
status report are already merged to RELENG_6 and will be part of
6.1-RELEASE.</p>
</body>
<help>
<task>Have a look at the sound related entries on the ideas
list.</task>
<task>Rewrite some parts (e.g. a new mixer subsystem with OSS
compatibility).</task>
<task>sndctl(1): tool to control non-mixer parts of the sound
system (e.g. spdif switching, virtual-3D effects) by an user
(instead of the sysctl approach in -current); pcmplay(1),
pcmrec(1), pcmutil(1).</task>
<task>Plugable FEEDER infrastructure. For ease of debugging various
feeder stuff and/or as userland library and test suite.</task>
<task>Support for new hardware (envy24, Intel HDA).</task>
<task>Performance enhancement (via 'slave'-channels).</task>
<task>Closer compatibility with OSS, especially for the upcoming
OSS v4.</task>
</help>
</project>
<project cat='doc'>
<title>Problem Report Database</title>
<contact>
<person>
<name>
<given>Mark</given>
<common>Linimon</common>
</name>
<email>bugmeister_at_freebsd_dot_org</email>
</person>
</contact>
<links>
<url href="http://www.freebsd.org/support.html#gnats">GNATS</url>
</links>
<body>
<p>The experiment to add 'tags' to many of the kern and related
PRs, including such things as '[nfs]', '[fxp]', and so forth,
continues. In addition, PRs with patches have been more
consistently tagged with '[patch]'. Two new periodic reports based
on both functional tags and PRs with patches have been added, with
the goal of making these PRs more visible.</p>
</body>
</project>
<project cat='team'>
<title>Ports Collection</title>
<contact>
<person>
<name>
<given>Mark</given>
<common>Linimon</common>
</name>
<email>linimon@FreeBSD.org</email>
</person>
</contact>
<links>
<url href="http://www.freebsd.org/ports/">The FreeBSD ports
collection</url>
<url href="http://people.freebsd.org/~fenner/portsurvey/">FreeBSD
ports unfetchable distfile survey (Bill Fenner's report)</url>
<url href="http://edwin.adsl.barnet.com.au/~edwin/ports/">FreeBSD
ports updated distfile survey (Edwin Groothius' report)</url>
<url href="http://portsmon.FreeBSD.org/index.html">FreeBSD ports
monitoring system</url>
<url href="http://www.freebsd.org/portmgr/index.html">The FreeBSD
Ports Management Team</url>
<url href="http://tinderbox.marcuscom.com">marcuscom
tinderbox</url>
</links>
<body>
<p>During this time, the number of ports PRs briefly dipped below
500 -- a number not seen since late 2000, when there were 4000
ports instead of our new total of over 14,000 ports. This is due to
the hard work of a large number of individuals, including pav,
edwin, mnag, garga, and many others. Congratulations folks! Some of
this was due to more aggressively committing PRs where the
maintainer had not responded within the timeout period. Although
controversial, this new policy seems to be succeeding in its goal
of improving the Ports Collection.</p>
<p>A new file, ports/KNOBS, was added by ahze to help bring some
order in the chaos that had been the OPTIONS namespace.</p>
<p>dougb has changed the way that rc.d works in -HEAD to work more
like the base rc.d scripts. We are hoping that this change will
make ports maintenance easier in the future. However, in the
meantime a few bugs have been introduced (which we intend to have
fixed by the time 6.1 is released). While this regression is
unfortunate, it was decided that now was the best time to try to
make this change rather than waiting for 7.0. We hope our users can
be patient with us in the interim.</p>
<p>Work continues to improve the marcuscom ports tinderbox, with
new features added by marcus, aDe, and edwin in particular. Several
ports committers are now running their own copies to test ports
changes.</p>
<p>The www.FreeBSD.org/ports page, and the portmgr web pages, were
reworked as well.</p>
<p>We have added 4 new committers since the last report.</p>
</body>
<help>
<task>Progress has been made in cracking down on ports that do not
correctly install when LOCALBASE is not /usr/local, but some ports
remain.</task>
<task>portmgr would like to remind committers that PRs for their
ports should be handled (either committed or marked 'suspended' or
'analyzed') within the two week timeout period. In this way other
committers do not have to invoke the maintainer timeout and things
will work more smoothly.</task>
</help>
</project>
<project cat='net'>
<title>Early Binding Updates and Credit-Based Authorization for the
Kame-Shisa Mobile IPv6 Software</title>
<contact>
<person>
<name>
<given>Christian</given>
<common>Vogt</common>
</name>
<email>chvogt@tm.uka.de</email>
</person>
</contact>
<links>
<url href="http://www.tm.uka.de/~chvogt/ebucba/">Download patch
here.</url>
<url
href="http://doc.tm.uka.de/2005/draft-vogt-mobopts-early-binding-updates-00.txt">
[1]</url>
<url
href="http://doc.tm.uka.de/2005/draft-vogt-mobopts-credit-based-authorization-00.txt">
[2]</url>
</links>
<body>
<p>Based on the Kame-Shisa Mobile IPv6 Software for FreeBSD 5.4, we
implemented the performance optimization "Early Binding Updates"
and "Credit-Based Authorization". The combined optimizations
facilitate significant reductions in handoff delay without
compromising protocol security [1][2].</p>
</body>
</project>
<project cat='misc'>
<title>A Comprehensive Delay Analysis for Reactive and Proactive
Handoffs with Mobile IPv6 Route Optimization</title>
<contact>
<person>
<name>
<given>Christian</given>
<common>Vogt</common>
</name>
<email>chvogt@tm.uka.de</email>
</person>
</contact>
<links>
<url
href="http://doc.tm.uka.de/2006/vogt-2006-delay-analysis-for-reactive-and-proactive-handoffs.pdf">
Download document here.</url>
</links>
<body>
<p>Optimizations to reduce handoff delays inherent in Mobile IPv6
Route Optimization as well as IPv6 router discovery, address
configuration, and movement detection have so far been mostly
considered on an individual basis. This document evaluates three
integrated solutions for improved handoff experience in
surroundings with different preconditions: reactive handoffs with
unmodified routers, reactive handoffs with router support, and
movement anticipation and proactive handoff management.</p>
</body>
</project>
<project cat='team'>
<title>FreeBSD Security Officer and Security Team</title>
<contact>
<person>
<name>
<given>Security</given>
<common>Officer</common>
</name>
<email>security-officer@FreeBSD.org</email>
</person>
<person>
<name>
<given>Security</given>
<common>Team</common>
</name>
<email>security-team@FreeBSD.org</email>
</person>
</contact>
<links>
<url href="http://www.freebsd.org/security/" />
<url
href="http://www.freebsd.org/administration.html#t-secteam" />
<url href="http://vuxml.freebsd.org/" />
</links>
<body>
<p>This report covers the period July 2005 - January 2006, since
the FreeBSD Security Team did not submit a status report for July -
October 2005.</p>
<p>In August 2005, the long-time Security Officer, Jacques Vidrine,
stepped down and was replaced by Colin Percival. Jacques remains
with the team as Security Officer Emeritus, and the team thanks him
for all his work over the past four years.</p>
<p>Also in August 2005, Dag-Erling C. Smørgrav was replaced by
Simon L. Nielsen as Deputy Security Officer. In addition, Tom
Rhodes and Guido van Rooij retired from the team in September 2005
and January 2006 respectively in order to devote their time to
other parts of the FreeBSD project. The current Security Team
membership is published on the web site.</p>
<p>In the time since the last status report, ten security
advisories have been issued (five in 2005, five in 2006) concerning
problems in the base system of FreeBSD; of these, four problems
were in "contributed" code, while six were in code maintained
within FreeBSD. The Vulnerabilities and Exposures Markup Language
(VuXML) document has continued to be updated by the Security Team
and the Ports Committers documenting new vulnerabilities in the
FreeBSD Ports Collection; since the last status report, 117 new
entries have been added, bringing the total up to 636.</p>
<p>The following FreeBSD releases are supported by the FreeBSD
Security Team: FreeBSD 4.10, FreeBSD 4.11, FreeBSD 5.3, FreeBSD
5.4, and FreeBSD 6.0. Their respective End of Life dates are listed
on the web site.</p>
</body>
</project>
<project cat='proj'>
<title>FreeSBIE</title>
<contact>
<person>
<name>
<given>FreeSBIE</given>
<common>staff</common>
</name>
<email>staff@freesbie.org</email>
</person>
</contact>
<links>
<url href="http://www.freesbie.org" />
<url href="http://torrent.freesbie.org" />
<url href="freesbie@gufi.org" />
</links>
<body>
<p>Development is going on after the complete rewrite of the
toolkit. There are many plugins available and we're testing a new
implementation of unionfs for 6.x. Since it's a bit unstable, it
won't be included in the release anyway. Developers hope to enter
the BETA state on February 1st, to release an -RC image around
February 15th and the RELEASE around March 1st. We need more people
to test the images we provide. Torrents for them are available at
<a href="http://torrent.freesbie.org">torrent.freesbie.org</a>
.</p>
</body>
<help>
<task>A new BETA Release, based on 6-STABLE, is available for
testing.</task>
</help>
</project>
<project cat='proj'>
<title>variant symlinks</title>
<contact>
<person>
<name>
<given>Andrey</given>
<common>Elsukov</common>
</name>
<email>bu7cher@yandex.ru</email>
</person>
</contact>
<links>
<url href="http://butcher.heavennet.ru/patches/kernel/varsym/" />
</links>
<body>
<p>The port of DragonFly's variant symlinks (
<a href="http://freebsd.org/projects/ideas/#p-magicsymlinks">
project ideas</a>
) to FreeBSD. Variant symlinks is a dynamic symbolic link
implementation. Source file of a variant symlink may contain one or
more variable names. Each of these variable names is enclosed in
braces and preceded by a dollar sign in the style of variable
references in sh(1). Whenever a variant symlink is followed, each
variable found in source file is replaced by its associated value.
In this manner, a variant symlink may resolve to different paths
based on context.</p>
</body>
<help>
<task>Document a new system calls.</task>
<task>More testing.</task>
<task>Write the rc.d script for the variant symlinks
initialization.</task>
</help>
</project>
<project cat='misc'>
<title>BSDCan 2006</title>
<contact>
<person>
<name>
<given>Dan</given>
<common>Langille</common>
</name>
<email>dan@langille.org</email>
</person>
</contact>
<links>
<url href="http://www.bsdcan.org/" />
</links>
<body>
<p>We are well into the process of selecting the talks for BSDCan
2006. Our new
<a href="http://www.bsdcan.org/2006/committee.php">program
committee</a>
has a hard selection task over the new few weeks. The deadline for
the
<a href="http://www.bsdcan.org/2006/papers.php">Call For Papers</a>
has passed, but it's not too late to submit a talk. Please see the
above URL for details. After the success of the
<a href="http://www.bsdcan.org/2005/activity.php?id=72">Work in
Progress last year</a>
, we are going to do it again this year. If you are working on
something you'd like to tell the world about, considering giving a
5 minute talk at BSDCan. The
<a href="http://www.bsdcan.org/2006/registration.php">registration
prices for BSDCan 2006</a>
will be the same as they were for
<a href="http://www.bsdcan.org/2005/registration.php">2005</a>
. We will be again in the SITE building at University of Ottawa and
you'll have lots of opportunity to meet with people from all over
the world. Be sure to make your travel plans now and don't miss out
on the biggest BSD event this year: BSDCan 2006.</p>
</body>
<help>
<task>We're looking for volunteers to help out just before and
during the conference. Contact Dan at the above address.</task>
<task>If you have a talk you'd like to present, contact Dan at the
above address.</task>
</help>
</project>
<project cat='ports'>
<title>FreshPorts</title>
<contact>
<person>
<name>
<given>Dan</given>
<common>Langille</common>
</name>
<email>dan@langille.org</email>
</person>
</contact>
<links>
<url href="http://www.freshports.org/" />
</links>
<body>
<p>
<a href="http://www.freshports.org/">FreshPorts</a>
recently moved to a new webserver. This should speed things up
considerably.</p>
<p>You can read all about the new hardware on the recently
introduced
<a href="http://news.freshports.org/">FreshPorts Blog</a>
. This blog will include technical discussions about ports and the
problems they present with respect to FreshPorts. Site
announcements will be posted there. As bugs are found, they will be
listed, as well as their fixes.</p>
<p>Supporting multiple platforms and architectures is still in the
development stage. Lack of time is affecting progress.</p>
<p>A fix for virtual ports is in the works. I'm also going to
implement more caching to speed things up. If interested in
discussing the options there, please get involved in the blog.</p>
</body>
</project>
<project cat='doc'>
<title>The FreeBSD Dutch Documentation Project</title>
<contact>
<person>
<name>
<given>Remko</given>
<common>Lodder</common>
</name>
<email>remko@FreeBSD.org</email>
</person>
<person>
<name>
<given>Siebrand</given>
<common>Mazeland</common>
</name>
<email>s.mazeland@xs4all.nl</email>
</person>
</contact>
<links>
<url href="http://www.freebsd.org/doc/nl/books/handbook">FreeBSD
released handbook</url>
<url href="http://www.freebsd-nl.org/doc/nl">Preview
documentation</url>
<url href="http://www.freebsd-nl.org/www/nl/">Preview website</url>
</links>
<body>
<p>The FreeBSD Dutch Documentation Project is an ongoing project,
focussed on translating the English documentation and website to
the Dutch language. Currently we are almost done with the FreeBSD
Handbook and started the initial translation of the FreeBSD
Website. We are always looking for people to help out, if you can
help, please contact Siebrand or me so that we can divide the work
amongst us.</p>
<p>Recent publications:
<br />
Recently the Printing and the Serial Communications chapters were
added to the FreeBSD Dutch Handbook.</p>
<p>Recently started items:
<br />
We started with the translation of the PPP and SLIP chapter and the
translation of the website.</p>
</body>
<help>
<task>Translate the final parts of the FreeBSD handbook.</task>
<task>Translate the FreeBSD Website</task>
</help>
</project>
<project cat='arch'>
<title>FreeBSD/xbox</title>
<contact>
<person>
<name>
<given>Rink</given>
<common>Springer</common>
</name>
<email>rink@FreeBSD.org</email>
</person>
</contact>
<links>
<url href="http://xbox-bsd.nl">FreeBSD/xbox project page.</url>
</links>
<body>
<p>FreeBSD/xbox support is nearing completion. Patches are
available for nve(4) ethernet support, as well as a
syscons(4)-capable console. I am working to integrate these in
CURRENT, a backport to 6.x is planned too.</p>
<p>Work is under way to support X.Org as well; people with more
detailed knowledge of X.Org are welcome to assist.</p>
</body>
<help>
<task>Enable framebuffer support in X.Org</task>
<task>Figure out a way to use mfsroots without using
loader(8)</task>
</help>
</project>
<project cat='kern'>
<title>LSI MegaRAID improvements</title>
<contact>
<person>
<name>
<given>Scott</given>
<common>Long</common>
</name>
<email>scottl@freebsd.org</email>
</person>
<person>
<name>
<given>Doug</given>
<common>Ambrisko</common>
</name>
<email>ambrisko@freebsd.org</email>
</person>
</contact>
<links>
</links>
<body>
<p>Major work has gone into improving both the performance of the
LSI MegaRAID (amr) driver, and in adding Linux compatibility
support. SMPng locking was added in Oct 2005 as well as a number of
performance improvements. The result is 138% performance
improvement in some local transaction tests.</p>
<p>Throughout 2005 a lot of work has gone into adding Linux
compatibility to the driver. It is now possible to run many of the
LSI-provided management apps for Linux under FreeBSD. Both this
feature and the performance improvements are in the 7-CURRENT
development branch of FreeBSD and are scheduled to be backported in
time for the FreeBSD 6.1 release.</p>
</body>
</project>
<project cat='kern'>
<title>E1000 driver improvements</title>
<contact>
<person>
<name>
<given>Scott</given>
<common>Long</common>
</name>
<email>scottl@freebsd.org</email>
</person>
<person>
<name>
<given>Andre</given>
<common>Opperman</common>
</name>
<email>andre@freebsd.org</email>
</person>
</contact>
<links>
</links>
<body>
<p>In an effort to solve the 'interrupt aliasing' problem that
plagues many motherboards under FreeBSD, I modified the Intel e1000
network driver (if_em) to use a combination of fast interrupts and
taskqueues. This technique avoids interrupt threads entirely, which
in turn avoids triggering the aliasing problem in the Intel APIC.
The result is that the driver now handles and masks interrupts
immediately, and a private taskqueue is then scheduled to run to
process the link events and rx/tx events. A side effect of this
asynchronous processing is that it acts much as traditional polling
does, in that the amount of work done in the taskqueue can be
controlled, and the taskqueue rescheduled to process work at a
later time. This leads to the driver having the low-latency
benefits of interrupts and the workload segmentation of polling,
all without complicated heuristics. Several users have reported
that the driver can handle higher loads than traditional polling
without deadlocks.</p>
<p>Along with this work, I modified the SMPng locking in the driver
so that no lock is required for the RX path. Since this path is
already implicitly serialized by the interrupt and/or taskqueue
and/or polling handler (all of which are exclusive to each other),
there was no need for extra synchronization. This has two benefits.
The first is reduction in processing overhead to unlock and lock
the driver for every RX packet, and significant reduction in
contention of the driver lock when transmitting and receiving
packets at the same time. I believe that it is further possible to
run the TX-complete path without a lock, further reducing overhead
and contention for high transmit loads. The reduced contention also
greatly benefited the fast-forward bridging code in FreeBSD, with
up to 25% performance improvement seen, as well as lower CPU
utilization.</p>
<p>The work can be found in FreeBSD 7-CURRENT for now. There are
still some rough edges relating to falling back to traditional
ithread and polling behavior, and I do not intend to merge the
changes back to FreeBSD 6.x until these are resolved. I also hope
to extend the INTR_FAST+taskqueue model into a general framework
for doing Mac OSX style filter interrupts. The work in the if_em
driver can also be extended to other high-performance network
drivers such as if_bge and if_ti. Any help with investigating these
topics is welcomed.</p>
</body>
</project>
<project cat='team'>
<title>Release Engineering Status Report</title>
<contact>
<person>
<name>
<given>RE</given>
<common>Team</common>
</name>
<email>re@freebsd.org</email>
</person>
</contact>
<links>
<url href="http://www.freebsd.org/releng" />
<url href="http://www.freebsd.org/releases" />
</links>
<body>
<p>Another very busy year for the FreeBSD Release Engineering Team.
Recognizing the problems, both technical and emotional, surrounding
the FreeBSD 5.x releases, our primary focus was in getting the bugs
out of FreeBSD 6.0 and getting it released. We succeeded at that
quite well, and the 6.0 release on Nov 18 was a huge success for
the project. Many thanks to all of the developers who put in
countless hours fixing bugs and improving performance, and to the
users who helped find, fix, and verify bugs.</p>
<p>Moving forward to 2006, we plan on doing a joint release of
FreeBSD 5.5 and 6.1 in late March. The 5.5 release will mark the
end of active FreeBSD 5.x development and releases, and is intended
to help users who have not yet switched to FreeBSD 6. It consists
primarily of bug fixes and minor improvements. FreeBSD 6.1 will be
an upgrade to 6.0 and will include new drivers, better performance
in certain areas, as well as bug fixes. We expect to release
FreeBSD 6.2 and 6.3 later in 2006.</p>
</body>
</project>
<project cat='net'>
<title>New Networking Features in FreeBSD 6.0</title>
<contact>
<person>
<name>
<given>Andre</given>
<common>Oppermann</common>
</name>
<email>andre@freebsd.org</email>
</person>
</contact>
<links>
<url
href="http://people.freebsd.org/~andre/New%20Networking%20Features%20in%20FreeBSD%206%20-%20Presentation.pdf">
Presentation</url>
<url
href="http://people.freebsd.org/~andre/New%20Networking%20Features%20in%20FreeBSD%206%20-%20Paper.pdf">
Paper</url>
<url href="http://www.eurobsdcon.org">EuroBSDCon 05</url>
</links>
<body>
<p>FreeBSD 6 has evolved drastically in the development branch
since FreeBSD 5.3 and especially so in the network area. The
presentation and paper give an in-depth overview of all network
stack related enhancements, changes and new code with a narrative
on their rationale.</p>
</body>
</project>
<project cat='net'>
<title>Optimizing the FreeBSD IP and TCP Stack</title>
<contact>
<person>
<name>
<given>Andre</given>
<common>Oppermann</common>
</name>
<email>andre@freebsd.org</email>
</person>
</contact>
<links>
<url
href="http://people.freebsd.org/~andre/Optimizing%20the%20FreeBSD%20IP%20and%20TCP%20Stack%20-%20Presentation.pdf">
Presentation</url>
<url
href="http://people.freebsd.org/~andre/Optimizing%20the%20FreeBSD%20IP%20and%20TCP%20Stack%20-%20Paper.pdf">
Paper</url>
<url href="http://www.eurobsdcon.org">EuroBSDCon 05</url>
<url href="http://people.freebsd.org/~andre/tcpoptimization.html">
TCP/IP Optimization Fundraiser 2005</url>
</links>
<body>
<p>FreeBSD has gained fine grained locking in the network stack
throughout the 5.x-RELEASE series cumulating in 6.0-RELEASE.
Hardware architecture and performance characteristics have evolved
significantly since various BSD networking subsystems have been
designed and implemented. This paper gives a detailed look into the
implementation and design changes in FreeBSD 7-CURRENT to extract
the maximum network performance from the underlying hardware.</p>
<p>Sponsored by: TCP/IP Optimization Fundraiser 2005</p>
</body>
</project>
<project cat='misc'>
<title>TCP/IP Optimization Fundraiser Status</title>
<contact>
<person>
<name>
<given>Andre</given>
<common>Oppermann</common>
</name>
<email>andre@freebsd.org</email>
</person>
</contact>
<links>
<url href="http://people.freebsd.org/~andre/tcpoptimization.html">
TCP/IP Optimization Fundraiser 2005</url>
<url
href="http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/em/if_em.c?rev=1.98&content-type=text/x-cvsweb-markup">
em(4) driver commit</url>
<url
href="http://www.freebsd.org/news/status/report-july-2005-oct-2005.html#TCP-&-IP-Routing-Optimization-Fundraise">
Previous Status Report</url>
</links>
<body>
<p>The fundraiser has been very successful and I want to thank
everyone who has pledged their support and tipped the jar. The full
amount plus a little bit more has been raised in a very short
timeframe. More information on the exact amounts and their sponsors
can be found at the first link.</p>
<p>After the delays on this project caused by the FreeBSD 6.0
Release cycle code freeze work has picked up and a paper was
written and a presentation held on "Optimizing the FreeBSD IP and
TCP Stack" for EuroBSDCon 05 on November 27th. See related status
report under that title.</p>
<p>From December 21st to January 11th I received access to a
calibrated Agilent N2X gigabit tester and traffic generator. Stock
FreeBSD 7-current was tested and profiled extensively in this
timeframe. A first proof of concept optimization was developed in
cooperation with Scott Long. It involved converting the Intel
Gigabit ethernet em(4) driver to make use of fast interrupt
handlers, taskqueues and lockless RX ring handling. This improved
the performance from 570kpps to 750kpps, a 25% improvement, with IP
fastforwarding enabled.</p>
</body>
<help>
<task>A large number of profiles and measurements was taken and a
detailed report on the performance characteristics and remaining
bottlenecks is under preparation.</task>
<task>Further optimizations and new features described on the
Optimization Fundraiser page.</task>
</help>
</project>
<project cat='kern'>
<title>Bt878 Audio Driver (aka FusionHDTV 5 Lite)</title>
<contact>
<person>
<name>
<given>John-Mark</given>
<common>Gurney</common>
</name>
<email>jmg@FreeBSD.org</email>
</person>
</contact>
<links>
<url
href="http://perforce.freebsd.org/fileSearch.cgi?FSPC=%2F%2Fdepot%2Fuser%2Fjmg%2Fbktrau%2F...&ignore=GO%21">
Perforce source repository</url>
</links>
<body>
<p>Basic audio capture is working. All of the parameters are set by
userland, while the RISC program generation is by kernel. No real
audio has been captured as there are no drivers for the tuner yet.
Someone with a real Bt878 NTSC card that is supported by bktr(4)
could use this to capture audio w/o using the sound card.</p>
<p>The real goal of this driver is to make HD capture possible with
the DViCO FusionHDTV5 Lite card that I have. I have some of the
documentation that I need, but I'm still missing two key docs. The
docs for the LGDT3303 ATSC/8VSB/QAM demodulator chip and a block
diagram of the board showing which GPIO lines go where and how the
chips are interconnected. DViCO has been responsive in
acknowledging my emails, but they have yet to produced any data
besides pointing me to the Linux driver (which is difficult to
figure out stuff by).</p>
</body>
<help>
<task>Complete basic capture driver.</task>
<task>Make the bktr(4) drive cleanly attach to the card, and
possibly add support for analog capture.</task>
</help>
</project>
<project cat='vendor'>
<title>SysKonnect/Marvell Yukon device driver</title>
<contact>
<person>
<name>
<given>Karim</given>
<common>Jamal</common>
</name>
<email>support@syskonnect.de</email>
</person>
</contact>
<links>
<url href="http://www.marvell.com" />
<url href="http://www.syskonnect.de" />
</links>
<body>
<p>This project provides support for SysKonnect's SK-98xx,
SK-95xx,SK-9Exx and SK-9Sxx PCI/PCI-Express Gigabit Ethernet
adapters via the yk(4) driver, as well as Marvell's Yukon LOM
Gigabit Ethernet controllers via the myk(4) driver. Driver source
has been made available to selected members of the FreeBSD
project.</p>
</body>
</project>
<project cat='arch'>
<title>FreeBSD on Xen 3.0</title>
<contact>
<person>
<name>
<given>Kip</given>
<common>Macy</common>
</name>
<email>kip.macy@gmail.com</email>
</person>
</contact>
<links>
<url href="http://www.fsmware.com/xenofreebsd/7.0/STATUS">current
status</url>
</links>
<body>
<p>Full domU support in p4 branch of -CURRENT, except suspend /
restore. Dom0 work is in progress. Scott Long is working on xenbus
integration with newbus. After newbus integration it will go into
CVS. I hope to see it MFCed to RELENG_6 so it will be available for
6.1.</p>
</body>
<help>
<task>Port the backend drivers from Linux.</task>
<task>Port the domain management tools from Linux.</task>
<task>Add multiboot support to loader(8) to support it booting
xen.</task>
<task>SMP, x86_64, and PAE support.</task>
</help>
</project>
</report>
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