class=”article first_main_article” readability=”53″>They

first reports of Valve about the tests they are doing with the game that will lead the landing of Steam on Linux, Left 4 Dead 2, and WIN the results will like , especially the fans to comparisons with Microsoft’s operating system, also wary of the hardware support in Linux.

 left 4 dead 2 The zombies of Left 4 Dead 2 run faster on Linux than on Windows

According

counted in the official blog, Valve is working on the performance of games on Linux, for which they have made some comparisons with Windows. Specifically, they used the following hardware: Intel Core i7 3930k, NVIDIA GeForce GTX 680, 32 GB of RAM.

on that team as “modest” tested Left 4 Dead 2 on Windows 7 Service Pack 1 64-bit and Ubuntu 12.04 of 32-bit, with results of 270.6 FPS (frames per second) on Windows and … 6 FPS in Ubuntu . Something that Valve normalize, being a port in early stage of development.

However, the company’s engineers have worked hard to make possible its commitment to Linux, improving three key areas :

  • Changing the game to work better with the kernel.
  • game modification to work better with OpenGL.
  • graphics driver optimization.
  • Left 4 Dead 2 running on Ubuntu went to 315 FPS , to the amazement of those developers, who have as is evident worked harder to optimize the Windows version.

    original article you will find the technical details of the work done by Valve, but in summary include the solvency OpenGL and direct collaboration (missing was , I might add) with the three major manufacturers of graphics cards, NVIDIA, AMD and Intel. Or what is the same: love is power.

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    Tags: graphics drivers, FPS, Games, L4D2, left 4 dead, Linux, OpenGL, performance, Steam, Ubuntu, Valve, video games, Windows

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    organization The Document Foundation has announced the availability of LibreOffice 3.5.4 , the fifth version of the family 3.5 of this office suite that comes with significant changes in performance.

    LibreOffice LibreOffice 3.5.4, faster than ever

    reveal the creators of the suite at the official announcement, “ LibreOffice 3.5.4 offers significant performance improvements over the previous version of the product, which is the combined result of many code optimizations implemented in recent months and the active pursuit of regressions on a regular basis by developers and volunteers “.

    The result, they say, is the fastest version of the history of LibreOffice, with improved performance up to 100% (ie, double) when opening large files, although they point that these improvements depend on the operating system, hardware configuration and file content.

    The Document Foundation recommends the update to all users, which can make downloading and installing LibreOffice 3.5.4 from this link . You have more details on this version in the change logs for RC1 and RC2 versions of this edition, which was informed of the improvements.

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    class=”article first_main_article” readability=”47″>It has long

    Google offers its DNS resolution service, which lets you use their DNS servers instead of providing us with our internet provider. Other projects such as OpenDNS also offer an alternative to that effect, but which of these alternatives is best?

     500x273 namebench Namebench, proving what DNS server is faster

    is what is helping us respond Namebench , a DNS server benchmark that evaluates the performance of those servers in our homes or workplaces, so that each time we DNS servers use faster and behave better.

    Namebench is a small program in Python that evaluates response times and also makes use of data as our browsing history, tcpdump output and even some databases such as Alexa to offer their recommendations.

    Linuxaria reveal, the project began as one of those projects that Google employees do in their time slot available for other initiatives (theoretically have 20% of their working time for these projects), and is a free application and we can use in Windows, Mac OS X or Linux.

    Ubuntu installation simply install the required package (namebench) from the Ubuntu Software Center or from the console:

     sudo apt-get install namebench 

    Whereupon

    can run the command namebench , which will bring up a window to display the name servers to be evaluated, we can modify field adding another name server IPs to know.

    Once done

    just have to click on “Start Benchmark “, which after about 10 minutes the result will provide the most appropriate DNS server us, and also indicate the IPs of the servers primary, secondary and tertiary. With these data we can go to edit the file / etc / resolv.conf and there will have to enter the IP corresponding to the appropriate format, for example:

     nameserver 127.0.0.1nameserver 8.8.8.8nameserver 85.37.17.40nameserver 208.67.222.222 

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    Although the tool has long been available but has not until now that we have learned of its existence: e4rat is a set of tools that “ accelerate the boot process and startup times of applications “.

     500x187 e4rat Boot Linux faster with e4rat

    Programmed by two developers

    of Augsburg University, e4rat defragmentation is based on the integrated file system ext4 to sort the files sequentially on a hard drive, which reduces the time Boot to a third of those referred routinely.

    In the example posted on the official website of the project show how Debian Squeeze went to boot in 45 seconds to do it in just 13 seconds , and that in a conventional hard drive (no SSD) , which certainly can make an interesting point for those of you looking to try this package, which code (for Debian, do not know if it will work correctly on other distros) is available here.

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    March 16, 2011 – by Nismrc

    3 comments

    After ten weeks of work the team led by Linus Torvalds, already have with us a new version of the Linux kernel 2.6.1938 Linux is a version that promises greater speed, thanks to some adjustments, including the famous patch of 200 lines of code, and have added new drivers for graphics and Wi-Fi and added support for the new AMD Fusion chips, among many other features are summarized below.

     02/06/1938 linux11 Linux kernel, faster and more support for graphics and Wi Fi

    overtook, this version has improved automatic grouping of processes using the patch than 223 lines of code developed by Mike Galbraith in November last year. In essence, the patch changes the way the scheduler assigns CPU time to each process so that the system can group all the processes with the same session ID. This, under certain scenarios an enormous additional performance delivered by the evidence.

    Another change is related to improvements in scalability VFS (Virtual File System) , which has made both of workloads such as multi-thread loads some unique processes, are much faster. On the other side to Btrfs adds transparent compression support for the LZO algorithm as an alternative to zlib and adding support to mark snapshots read-only and the feature “force mounting”.

    improvement has to do with “Transparent Huge Pages”, which will use up to 2MB of memory pages to process (where hitherto 4KB), which is done to better exploit the hardware and achieve a “higher performance, especially in workloads that require a large amount of memory as a server JVM and database, as they said Tim Burke, vice president of engineering for Red Hat Linux.

    also add the proactive routing protocol for Ad-hoc Mesh Networks Wireless: BATMAN (Better Approach To Mobile Ad-hoc Networking), which in practice will help provide network connectivity in the presence of natural disasters, military conflicts or censorship of the Internet thanks to this protocol allows the network to function as a mesh routing where each node involved in forwarding data to other nodes dynamically.

    And finally we can emphasize hardware support as always, increases core version to version. With regard to this is very good to know that added support for the new AMD Fusion , which as we know combines CPU and GPU into a single unit (APU), and the inclusion of new graphics drivers for GPUs NVidia and AMD has also added better support for Wi-Fi cards like Atheros, Broadcom, Intel, Ralink and Realtek, etc.

    That

    among many other changes have been made “in record time. You can see more detail on the following link, I also recommend this article prepared by H-Online which detailed some of the background changes and features have been added in this release. If you want you can also download the new kernel from here or wait patiently to be included in a future version of your favorite distro.

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    New SDK for VP8, “Bali”, faster

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    March 9, 2011 – by techy

    5 comments

    WebM project blog has announced an updated version of the SDK for VP8 video codec has been given the codename “ Bali .” This version is focused on accelerating the process of video compression and it also improves the video quality.

     500x247 WebM New SDK for VP8: Bali, faster

    Compared with the first released version (May 19, 2010) and the previous version codenamed Aylesbury (October 28, 2010) the new version Bali has the following improvements:

  • compression speed mode “Best” : on x86 processors, Bali runs 4.5 times faster than our original version and 1.35 times faster than Aylesbury.
  • compression speed mode “Good” : Bali is 2.7 times faster than the first version and 1.4 times faster than Aylesbury.
  • ARM platforms with extensions Neon , the real-time compression of video telephony content is 7% faster than the ARM Cortex A9 Aylesbury with a nucleus, while a 15% A9 in a dual-core and 26% faster on quad-core micros.
  • NVIDIA Tegra platform 2 , the real-time compression is between 21 and 36% faster than Aylesbury, depending on compression settings.
  • Wed As indicated on OSNews in Aylesbury version had already been improved by 7% return on the metric PSNR (6.3% in the case of SSIM), suggesting that from the first version to Bali has been improved by 12.8% in this metric , which implies a significant improvement in image quality.

    now remains to be seen whether the adoption of VP8 and container WebM are widespread on the Internet, and comparisons with the de facto standard, H.264, are inevitable.

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    File systems: what is faster?

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    February 3, 2011 – by techy

    0 comments

    MuyLinux pay enough attention to the section of the file systems that has evolved greatly in recent years on Linux and it seems to still have a healthy medium-term development.

    While in Windows or Mac OS X file systems suffer only small changes between version and version in Linux appear more and better alternatives to help you get more out of our storage units.

    That, however, returns to cause some confusion among users . When you have to choose the format of partition and what file system you use for your Linux installations, often pull from the default of every distribution, but the existence of alternatives raises the question of the traditional “What if …? .

    clarify some of these doubts have arisen several articles comparing the performance of various file systems on different distributions. Usually these tests and from Phoronix Test Suite Phoronix of, but now comes a comparative MindPlusPlus in which we analyze the performance Btrfs, Ext2, Ext3, ext4, JFS, XFS ReiserFSy .

    analysis is very good because at first explained in detail the options that you used to configure both the test system as file systems modified for these tests. However, the conclusions are too confusing , and indeed there seems no clear overall winner. In some tests emphasizes the individual winners, but not appear to be a global winner .

    In any case, an interesting read. Do not miss it if you want to have something more clear where the shots go in the field of file systems.

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    Sabayon Linux 5.5, faster boot

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    January 27, 2011 – by techy

    10 comments

    team Sabayon Linux developers have announced the availability GNOME and KDE versions of Sabayon Linux 5.5 , its distribution based on Gentoo and tries to offer “full experience out of the box “while taking advantage of the stability and versatility of Gentoo base.

    Sabayon

    name, as explained in H-Online, from a typical Italian dessert, known as zabaglione (or sabayon zabaione in Castilian), and maybe something having to do that name in the fact that Sabayon Linux version has always been a “sweet” Gentoo , a distro for advanced users some time is a bit in the doldrums.

    Sabayon Linux 5.5

    we have a Linux kernel and also 06/02/1937 have the option to install both GNOME 2.32 and KDE 4.5.5 , though the developers have indicated that it is possible to update the KDE and the freshly baked KDE 4.6-SC. The ext4 filesystem is used by default, but also is supported experimentally Btrfs.

    changes in version 5.5 include 1,000 packets updated since 5.4, as well faster boot times and fixes about 100 bugs, improving stability, usability and overall performance of the distro.

    can find more details of the version and a visual tour of the GNOME and KDE versions of Sabayon Linux and the list of updated packages in the official announcement article. And of course you can download the distribution for both 32-bit platforms and 64 bits. It appears as one of the developers the installation should not take more than 10 minutes , a record. Can anyone confirm?

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