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Operating Systems Ubuntu Linux

Ubuntu 10.04 Alpha 2 vs. Early Fedora 13 Benchmarks 157

Given that early benchmarks of the Lucid Lynx were less than encouraging, Phoronix decided to take the latest alpha out for a spin and has set it side-by-side with an early look at Fedora 13. "Overall, there are both positive and negative performance changes for Ubuntu 10.04 LTS Alpha 2 in relation to Ubuntu 9.10. Most of the negative regressions are attributed to the EXT4 file-system losing some of its performance charm. With using a pre-alpha snapshot of Fedora 13 and the benchmark results just being provided for reference purposes, we will hold off on looking into greater detail at this next Red Hat Linux update until it matures."
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Ubuntu 10.04 Alpha 2 vs. Early Fedora 13 Benchmarks

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  • by Anonymous Coward on Friday January 15, 2010 @06:47PM (#30785188)

    It's all worked perfectly for me on the three computers I've tried it on, PulseAudio included. The ability to move audio from one output device to another is awesome - Windows certainly can't do it!

  • by daremonai ( 859175 ) on Friday January 15, 2010 @06:48PM (#30785194)
    Don't worry; it's actually alpha (Ubuntu 10.04 LTS Alpha 2) vs. pre-alpha (2010-01-13 Rawhide nightly build). Much better.
  • by Anonymous Coward on Friday January 15, 2010 @07:01PM (#30785320)

    Windows certainly can't do it!

    Windows 7 or Vista instructions: Right-click on the little speaker icon in the bottom right. Click "Playback devices". Right-click on the device you want to use instead of you current device. Click "Set as Default Device". The audio output will instantly switch to that device.

  • by MojoMagic ( 669271 ) on Friday January 15, 2010 @07:18PM (#30785518)
    As I understand it, the issue is that the default time between cache dumps to disk is 4 seconds. This is much longer than ext2/3. So, if you yank the power cable during this time, on the next reboot ext4 will have no record of the event ever having occured and will use the previously journaled data instead. If this is actually the case, then I don't really consider this a bug. It's just a larger cacheing window. Someone please correct me if I'm wrong.
  • by crispytwo ( 1144275 ) on Saturday January 16, 2010 @02:13AM (#30788238)

    Even though PA has had it's share of compatibility problems, it is working much better now. Things (sound devices) that never worked before actually work now and switching between them is possible -- on the fly --, when they weren't working at all before. It's so great to be able to use high quality audio for music/games, and a USB headset for phone calls.

    Things are looking up on the PA front.

  • by JohnFluxx ( 413620 ) on Saturday January 16, 2010 @08:05AM (#30789450)

    Consider when a typical application exits. It does something like:

    * Write new config file to a temporary file
    * Rename the temporary file over the top of the old config file

    This way if the computer crashes, applications expect the config file to always be valid. i.e. they expect the data to have been written to disk, completely, before the rename happens.

    This worked in ext3 and other filesystems, but originally not in ext4. The result was that the config file could end up being empty.

  • by Anonymous Coward on Saturday January 16, 2010 @11:00AM (#30790302)

    It isn't gone.

    In Ubuntu Karmic (9.10) or probably any GNOME you can restore [econowics.com] Ctrl-Alt-Backspace [digitivity.org].

    Just go to Keyboard preferences, keyboard layout options, and enable the ctrl alt backspace key combo.

One man's constant is another man's variable. -- A.J. Perlis

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