19 febrero 2006

A Look at GNOME 2.14



A Look at GNOME 2.14

Built on the shoulders of giants, GNOME 2.14 hits the shelves on the 15th of March. As well as new features and more polish, developers have been working around the clock to squeeze more performance out of the most commonly used applications and libraries. This is a review of some of the most shiny work that has gone into the upcoming GNOME release.

Speed King

Significant improvements in GNOME 2.14 have lead to noticable speed-ups throughout the desktop. The speed of font rendering has been improved and a new memory allocator called GSlice, which is in many ways similar to the slab allocator in the Linux kernel offer significant performance increases throughout GNOME. Specific identified slow points in GNOME such as logging in have also been optimised by our crack team of speed kings.

Performance gains of GSlice
Performance comparison of GMemChunk (older allocator),
Malloc and GSlice with 1, 5, 10 and 20 threads each
doing 1 million allocations and deallocations of a GList.

One application that got a lot of attention is GNOME Terminal which can now display the entire contents of the dictionary on the screen literally in a second, or in under 2 seconds using antialiased fonts (using antialiased fonts it took xterm 1m 13s to do the same!).

Performance gains of vte
time cat /usr/share/dict/words — all
terminals using the Fixed font at 80x25 characters.

Locked Out

Part of the newly formed GNOME Admin Suite, a collection of tools for Administrators is Pessulus, a lockdown editor for GNOME. Pessulus allows administrators to disable certain functionality in the GNOME desktop. This feature is useful in corporate environments and Internet cafés where users should not be allowed to edit panels, use the command line, &c.

Pessulus
Locking the screen, logging out and switching the machine off
has been disabled for users.

Push It

Also in the new Admin Suite is Sabayon. This powerful tool allows administrators to create profiles for groups of users, for example Programmers or Admin Staff and set certain default and mandatory settings for these groups. Administrators can quickly edit and deploy profiles by changing settings inside a live, nested GNOME session.

Sabayon
Editing the profile for Penguins interactively.

Searching for Love

GNOME 2.14 should be called Searchable GNOME, with the addition of powerful new searching systems in Nautilus and Yelp. Both have a traditional search mode plus a fast, superhot mode for those of you who are Beagle-enabled!

Nautilus
Searches in Nautilus can be saved and reopened later like folders.

Help!

As mentioned Yelp, GNOME's Help Browser also has freshly added searchability, but it has also gained much, much more. Access to UNIX manpages and GNU Info pages is now enabled by default (they even get searched!), you can now print hard copies of your manuals and to top it off, the whole thing got a lot faster.

Yelp
Search for help, plus read manuals and info files

Message To My Girl

Ekiga, formerly known as GNOME Meeting, has hit version 2.0! Ekiga now sports incredible functionality including both SIP and H323 support for Voice and Video over IP; automatic STUN configuration; PC-2-Phone support for making those cheap international calls and much more. As well as being an excellent VoIP client, Ekiga also integrates with your Evolution addressbook or company LDAP directory as well as VoIP provider White Pages services so you don't need to remember VoIP addresses.

Ekiga
SIP call in progress with both audio and video.

In addition to Ekiga, users without existing SIP accounts can register one with Ekiga.net giving them free SIP presence on the Internet.

Look Through Any Window

Metacity, the GNOME window manager, has received several exciting new features. First off is edge resistance: this means that window edges now have offer some resistance as you attempt to move windows past each other, making it possible to line windows up easily. The edges of monitors and panels also offer some resistance to make it possible to line windows up against monitor edges.

Multimonitor support, both with and without Xinerama has been improved with Metacity now conciously avoiding placing small windows and dialog boxes across monitor boundaries. This means that many older applications such as GTK+ 1.2 applications and Motif applications which want to put dialog boxes in the middle of the screen will have their dialog boxes moved to one side to remain readable.

To help users who utilise remote X windows, Metacity will mark windows that are running on a different host to Metacity itself. This will help users identify what machine a graphical application is running on and help to prevent possibly destructive tasks from accidentally being run on the wrong machine.

Finally, Metacity now has an integrated compositing manager. The new compositing manager uses libcm and OpenGL and implements all of the staple compositing features like drop shadows, menu fades and "wobbly minimise". Showing obscured windows and resizing windows no longer suffers from tearing or redraw effects as this is now handled in offscreen memory before compositing. Integrating the compositing manager with Metacity allows for the strength of a combined window and compositing manager along with Metacity's good support for legacy and broken applications. The Metacity compositing manager requires the latest features of unstable X.org and requires the new texture-from-pixmap extension, as a result this feature is turned off by default.

Metacity's Compositing     Manager
the Metacity Compositing Manager doing dropshadows (with a theme using the Clearlooks 2.7 Cairo-based engine)

You've Got The Whole World In Your Hand

Introducing Deskbar, a fabulous new panel applet for the GNOME Desktop. Deskbar offers you the ability to execute programs, open bookmarks, use search engines, do live Google searches, live Yahoo searches, live Beagle searches and much, much more. Deskbar search plugins are written in Python, so new search plugins can be rapidly developed.

Deskbar
Deskbar on the Panel

Deskbar also offers a reduced size mode for small panels or vertical panels where the entry field slides out from the panel.

Changes

An important feature for home use, fast user switching is now available throughout the desktop. As well as optional user switching from your panel, you can also switch users from the Log-Out dialog and from the screensaver.

Fast User Switcher
switch users straight from the panel

Evolution

The latest version of Evolution offers support for a number of new protocols and servers, including the new Hula server and CalDAV, a calendaring protocol similar to WebDAV. This support completes a long missing part of the free/open groupware suite, and goes along with IMAP and LDAP to provide on the go roaming connection to your calendars. As with a local, Groupwise or Exchange calendar, these calendars can be edited and shared with other users.

Evolution
viewing calendars in Evolution, including a CalDAV calendar and a Webcal Calendar

Evolution now completely integrates Exchange support as an E-plugin (no more Exchange button) and has support for Memo (or VJOURNAL) entries in iCal files.

Writing Montage

gedit, GNOME's flexible text editor, has got many new UI features as part of extensive UI work carried out on multidocument support. As a result, it is now much easier to work on multiple documents (for example source code) using gedit. Combined with powerful syntax highlighting and other features, gedit is very useful for working on many different multidocument projects.

gedit
gedit, with a number of source files open, can save to remote servers

A long requested feature in gedit is finally ready and stable. gedit can now both read and write to remote files, making it a powerful tool for editing remote files (such as websites) without suffering network lag from the remote machine.

Also new, is the ability to write plugins in Python, the functionality of gedit can now be extended easily without having to write C code. New useful plugins include one to execute external commands (such as make) using shortcut keys, support for tag-based completion and an interactive Python console.

gedit
from gedit's plugins dialog, we can configure active plugins to suit our requirements

Sharp Dressed Man

As every dapper man knows, girls go crazy for smooth looking graphics. Thanks to the availablity of Cairo in the desktop the end of bad graphics and jagged lines is in sight.

System Monitor
no more raggedy lines in GNOME's System Monitor

Daysleeper

GNOME Screensaver is a new screensaver module for GNOME. As well as new screensavers, it can use old favourites from Xscreensaver. GNOME Screensaver offers good integration with the upcoming GNOME Power Manager, accessibility support and translatable dialogs.

GNOME Screensaver
GNOME Screensaver configuration previews Floating Feet

It's Only Sound

Making multimedia better, GNOME 2.14 will ship with GStreamer 0.10, the latest branch of the popular multimedia platform. GStreamer 0.10 is faster and more stable than any of its predecessors and you can see this in GNOME. Totem, Sound Juicer and the mixer have all been updated to GStreamer 0.10. GStreamer 0.10 is also compatible with the upcoming licensed media plugins from Fluendo (you can get their MP3 plugin now).

Choices

Sometimes things that were complicated for ages just get really simple; like with the preferred applications dialog. The term is stetic.

Preferred Application Preferences
choose your preferred applications from the registered list, or enter your own custom command

Sound Preferences
the sound preferences also offers more choices more simply

Do You See What I See?

There is a lot of fantastic stuff coming up in the world of GNOME. These are not yet part of the official GNOME Desktop, but are already getting tight integration and may appear in distributions near you. Once they've gotten more testing and review — expect them in GNOME too.

GNOME Power Manager
GNOME Power Manager

GNOME Power Manager is a next generation power management system built on top of the Hardware Abstraction Layer (HAL). It gives users the power to control many aspects of power management on the desktop, especially on laptop computers.

libnotify
Notification Framework

The notification framework is a set of notification widgets that have been sorely lacking from GNOME for some time. Many applications can already take advantage of the notification framework if it is present. Many people find notification popups in other desktop environments irritating, so to prevent this GNOME is working on clearcut recommendations for its Human Interface Guidelines before GNOME 2.16.

Loved this Page?

If you loved this page, you should also check out The GNOME Journal, official journal of the GNOME Project. Read it today!

All comments/complains/queries/flames to Davyd Madeley.
Thanks to Andy Fitzsimon for help with producing performance graphics.
Thanks to Ray Strode for pictures of the Metacity compositing manager.
Thanks to Harish Krishnaswamy for lending me a Hula account.
Thanks to the extended GNOME community for all the proof reading.
GNOME © 1997-2006, Free Software Foundation and others
This page © 2006, Davyd Madeley

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.


Los triunfos de Linux





Los triunfos de Linux

Submitted by Meztli-xictli on Sun, 2006-02-19 08:32.

Sin lugar a dudas el nuevo triunfo de Linux es la llegada de el PlayStation3 que podrá soportar Linux, nos cuentan que tendrá soporte para un disco removible el cual no se encontraría incluido pero esta noticia debe ser de gran aceptación entre nosotros. Si el PlayStation3 corre un sistema Linux, lo que podríamos hacer con el conectado a nuestra computadora, es decir poder unir los dos procesadores seria un súper poder real ya que cuenta con 218 Gigraflops de poder.
NOTA (Gigaflops. GIGA “FLoating point OPerations per Second” Operaciones GIGA de punto “coma” flotante por segundo. Mil millones de operaciones de punto flotante por segundo).

Por otra parte google ya presenta su primera beta de su software de edición e intercambio de fotografías para Linux, lo lamentable es que estará sobre wine y en lo personal me gustaría que fuera 100% código nativo y no tener que emular, pero lo bueno de esto es que wine se fortalezca aun mas y podría funcionar mucho mas eficiente en aplicaciones indispensables para la industria, aplicaciones que no se encuentra en nuestras manos poder migrar como requisitos de recaudación y seguro social.

Bueno, ya sabemos que Mac a integrado un intel en su maquina y se realizan esfuerzos por parte de microsoft para instalar su primer win sobre Mac, bien hemos ganado terreno en esto también. La primera instalación es un Gentoo y aun cuando no se logra correr a perfección ya es bastante puesto que eso se ajustara sobre la marcha, lo importante es tener el Kernel sobre el Mac.

Pues después de estas muy buenas notas también existen notas malas y he aquí una.
Ese Bill ya esta preocupado por la apertura del internet en China, he indica que debe ser algo abierto a todos, me pregunto. ¿No es el quien pone candados a el internet que se desarrollo cuando el aun no existía?. Desde mi punto de vista y conociendo esa cultura ya que hablo su idioma y he permanecido muy cercano a ella. Es cierto que ese país somete a controles algo fuera de lo normal a su gente, pero ese Bill aquí solo esta buscando que no pirateen su software. Tal vez aun no logre comprender que la piratería en la cultura china no existe, para ellos realizar copias es tan normal como comer arroz, tan normal como para nosotros bajar los paquetes de la red de un Linux. Si el esta pensando someter a ese país numeroso atraves de leyes estadounidenses esta fregado, ya que para ellos se encuentra primero su cultura milenaria que verle la cara a cualquier extranjero. Es una guerra que de antemano ya le perdió frente a China y en dado caso de que intenten forzarles a normas internacionales seguro que migran a Linux, que de hecho el gobierno de ese país ya empieza a considerar la oportunidad de migrar. Si ese gobierno decide migrar es eso y nada mas que eso.
Muy independiente a todo me llega a la mente que en China esta restringida la pornografía y existen filtros para que esas webs no se muestren, así como es castigado cualquiera que le coloque ya sea de forma gráfica o escrita, así también como publicaciones contra su gobierno. Me temo que ese Bill ya piensa tirar sus negocios de pornografía por eso tanta insistencia en la liberación de la red, ya que ese negocio si deja bastante dinero y como anda con perdidas sobre sus ventanas pues tiene que sacar dinero de algún lado.

Meztli-xictli (Salvador Garcia Z.)



Comunidad de usuarios de Linux de la ciudad de Tijuana Baja California, Mexico. Aun puedes revisar mensajes anteriores en el viejo foro www.linuxtj.org/foro

Noticias en Xataka - 19/02/2006

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