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authorThomas Schwinge <thomas@codesourcery.com>2012-05-24 23:08:09 +0200
committerThomas Schwinge <thomas@codesourcery.com>2012-05-24 23:08:09 +0200
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-[[!meta copyright="Copyright © 2011 Free Software Foundation, Inc."]]
-
-[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
-id="license" text="Permission is granted to copy, distribute and/or modify this
-document under the terms of the GNU Free Documentation License, Version 1.2 or
-any later version published by the Free Software Foundation; with no Invariant
-Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
-is included in the section entitled [[GNU Free Documentation
-License|/fdl]]."]]"""]]
-
-[[!meta date="2011-10-13 10:00 UTC"]]
-
-A quarter of the Hurd, Q2 of 2011, PS: *GNU Hurd Truths and Myths*.
-[[!if test="included()" then="""[[!toggle id=full_news
-text="Details."]][[!toggleable id=full_news text="[[!paste id=full_news]]"]]"""
-else="
-[[!paste id=full_news]]"]]
-
-[[!cut id="full_news" text="""
-
-After our last *[[Quarter of the Hurd, Q2 of 2011|2011-q2]]* has been picked
-up by a bunch of news sites, blogs, and so on, discussions and speculations
-have been running all over the net:
-
- * {{$news/2011-q2#lwn}};
- * {{$news/2011-q2#phoronix-1}};
- * {{$news/2011-q2#phoronix-2}};
- * {{$news/2011-q2#golem}};
- * {{$news/2011-q2#h-online}};
- * {{$news/2011-q2#innocenthacker}};
- * {{$news/2011-q2#netzwelt}};
- * {{$news/2011-q2#operation-tunnelbau}};
- * {{$news/2011-q2#osnews}};
- * {{$news/2011-q2#pro-linux}};
- * {{$news/2011-q2#reddit-1}};
- * {{$news/2011-q2#reddit-2}};
- * {{$news/2011-q2#slashdot}};
- * and a lot more.
-
-We are happy to see that there is
-considerable interest in the Hurd; but we also saw some
-misunderstandings, false rumors, and outdated information floating
-around. Thus we will try to clarify the situation regarding some of
-the more common misunderstandings.
-
- * **Debian GNU/Hurd strives to become an official Debian port**:
- The Debian GNU/Hurd team is working hard to prepare a technology
- preview/release candidate for the next Debian release (Wheezy), to
- eventually become an official port alongside GNU/Linux and GNU/kFreeBSD --
- but we don't know yet whether we will make it. This is also the
- understanding of (for example) Debian's spokesperson
- {{$news/2011-q2#schmehl}}.
- There is still substantial work necessary to indeed become a release candidate.
- If you
- want to help, please see our [[contributing]] page and the *to do*
- list maintained on <http://wiki.debian.org/Debian_GNU/Hurd>. We'd
- be happy to have you on board!
-
- * **Java support for GNU Hurd is nearby**: Jérémie Koenig is working
- on making a versatile Java programming environment available on
- GNU/Hurd as part of his
- [[Google Summer of Code project|user/jkoenig/java]], focusing on
- OpenJDK 7. [Experimental
- packages](http://jk.fr.eu.org/debian/experimental/)
- are already available.
- Also, Java support in GCC (via GCJ/ECJ) has been available before,
- which Jérémie also improved.
-
- * **GNU Hurd supports X.Org, though a bit unstable**:
- X support has been present for ages
- (anyone remember
- [1998's
- XFree86](http://cvsweb.xfree86.org/cvsweb/xc/programs/Xserver/hw/xfree86/os-support/hurd/hurd_video.c?rev=1.1&content-type=text/vnd.viewcvs-markup)?),
- and X.Org also has been supported for a long time (for example, GNU Hurd
- support is explicitly mentioned in the [X.Org 7.2 release
- announcement](http://www.x.org/wiki/Other/Press/X11R72Released?action=show&redirect=PressReleases%2FX11R72Released)).
- It is true though that many modern graphic card drivers don't work anymore,
- as they require DRM (Direct Rendering Manager) support,
- so often only VESA is available.
- Also, X on the Hurd is [[somewhat_unstable|hurd/status]].
-
- * **GNU Hurd has weaker device driver support than the Linux kernel**:
- Most of the drivers we use today were imported from Linux 2.0 series.
- For network cards,
- Linux 2.6.29 drivers are available through [[DDE|hurd/dde]] --
- however, this is not fully integrated yet,
- so using these drivers needs manual setup for now ([[hurd/dde/guide]]).
- Support for other driver types is also possible with DDE in principle,
- but it requires some not-trivial work for each additional class of drivers,
- so this can take some time to become available.
- (An additional benefit provided by DDE is that the device drivers run as
- regular user-space processes --
- unlike the old drivers we were using so far,
- which are part of the underlying GNU Mach microkernel.)
-
- * **The Hurd has SMP, but needs support for new chipsets**:
- Both GNU Mach (the microkernel used by the Hurd),
- and the Hurd servers themselves come with SMP support.
- However, GNU Mach [[misses drivers for modern SMP chipsets|faq/smp]], and
- there are also some SMP-related bugs in the implementation,
- so further work is needed
- for the Hurd to take advantage of multicore processors.
-
- * **Installation can still be challenging**:
- Please [[take notice|http://xkcd.com/293/]] of the
- [README file](http://people.debian.org/~sthibault/hurd-i386/installer/cdimage/YES_REALLY_README.txt) --
- just like with any software in development,
- there are some known pitfalls to avoid.
- (Or better yet, help to fix.) :-)
- Alternatively, you can simply use the the
- [preinstalled
- image](http://people.debian.org/~sthibault/hurd-i386/debian-hurd.img.tar.gz)
- in QEMU/KVM/VirtualBox/...
-
- * **GNU Hurd is not the same as GNU/Hurd**:
- The GNU project set out in 1983 to create a complete free operating system.
- When a distribution such as Debian combines their GNU-based userland
- with the GNU kernel (named [[*GNU Hurd*|hurd/what_is_the_gnu_hurd]]),
- the result is more or less a full GNU system.
- However, such third-party distributions are distinct
- from what an official complete GNU system release would be;
- and thus we often call them *GNU/Hurd* for clarity, similar to *GNU/Linux*
- or *GNU/kFreeBSD*.
-
- * **Performance**:
- The benchmarks conducted by Phoronix (as reported by
- {{$2011-q2#phoronix-3}}) (Phoronix/Michael: thanks for doing these!)
- attest very good performance to the Hurd.
- Keep in mind though that these benchmarks were almost completely CPU-bound,
- so they essentially just confirm that we don't do anything stupid
- regarding CPU initialization (cache setup, etc.).
- The results would be different for benchmarks
- that actually exercise the operating system functionality more.
- The fact that the tests were performed in a virtualized environment,
- might also have helped the results,
- for example by mitigating the effects of our unoptimized I/O paths --
- which are currently the major bottleneck in most situations.
- Nevertheless, these results are a hint
- that the extra IPC required in microkernel systems
- [[doesn't necessarily hamper performance|ipc#performance]]
- quite as much as often believed.
- We are glad to see such solid benchmarks
- help dispel some of the myths around the Hurd and other microkernel-based
- systems.
-
- * **Given the available manpower, the progress is very good**:
- Over the past decade,
- there were seldom more than [[*half a dozen developers* at any given
- time|faq/how_many_developers]]
- hacking on the Hurd, in their spare time --
- not hundreds of paid developers like Linux has nowadays.
- Considering this, the progress made is quite encouraging
- with the system being [[pretty usable|hurd/status]] for many day-to-day tasks now.
- It is generally understood that the ambitious architecture of the Hurd
- requires a lot of effort to get it working at all,
- but the recent progress shows that once the foundations are in place,
- the Hurd design indeed allows the developers to be very productive.
- To see the progress over the last few years, you can have a look at our
- [[news archive|news]]. If you're interested, you can find various ways of
- [[contributing]]. We'd be happy to see you join in, because for the Hurd,
- every single helping hand makes a big difference!
-
-"""]]