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Thread: DragonFlyBSD 3.2.1 Battles Against Linux For Speed

  1. #1
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    Default DragonFlyBSD 3.2.1 Battles Against Linux For Speed

    Phoronix: DragonFlyBSD 3.2.1 Battles Against Linux For Speed

    The much-anticipated release of DragonFlyBSD 3.2 is now available as it enhances its performance to better compete with Linux in multi-core environments...

    http://www.phoronix.com/vr.php?view=MTIyMTM

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    Quote Originally Posted by phoronix View Post
    Phoronix: DragonFlyBSD 3.2.1 Battles Against Linux For Speed

    The much-anticipated release of DragonFlyBSD 3.2 is now available as it enhances its performance to better compete with Linux in multi-core environments...

    http://www.phoronix.com/vr.php?view=MTIyMTM
    a monolithic kernel is always faster than a kernel that passes messages queues. it would be almost impossible to beat linux in performance.

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    Obligatory "Why is everyone working on different things? Why don't we all work together in unison to build the ultimate kernel/distro/package format" post.

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    Quote Originally Posted by Ancurio View Post
    Obligatory "Why is everyone working on different things? Why don't we all work together in unison to build the ultimate kernel/distro/package format" post.
    Everyone is working on different things, because everyone is trying to achieve different goals.
    There is no perfect (suitable for every task) kernel/distro/package format.

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    Quote Originally Posted by garegin View Post
    a monolithic kernel is always faster than a kernel that passes messages queues. it would be almost impossible to beat linux in performance.
    DragonFlyBSD doesn't use message quene so much.
    http://www.phoronix.com/scan.php?pag...tem&px=MTIwNjA
    Of course 2.6.32 is a bit old.

  6. #6
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    Default It is monolithic.. with some messaging infrastructure when needed

    Quote Originally Posted by garegin View Post
    a monolithic kernel is always faster than a kernel that passes messages queues. it would be almost impossible to beat linux in performance.
    The DragonFly kernel *is* monolithic. There are some various api's in kernel to support different types of multithreaded scenarios
    when those scenarios would be better than some other alternative (e.g. a lock, etc) -
    But it is *not* a mach-style microkernel where everything is message passing, etc.

    disclamer: I am a dragonfly dev

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    Quote Originally Posted by LightBit View Post
    Everyone is working on different things, because everyone is trying to achieve different goals.
    There is no perfect (suitable for every task) kernel/distro/package format.
    http://en.wikipedia.org/wiki/Sarcasm

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    Quote Originally Posted by dfcat View Post
    The DragonFly kernel *is* monolithic. There are some various api's in kernel to support different types of multithreaded scenarios
    when those scenarios would be better than some other alternative (e.g. a lock, etc) -
    But it is *not* a mach-style microkernel where everything is message passing, etc.

    disclamer: I am a dragonfly dev
    Wikipedia disagrees with you: https://en.wikipedia.org/wiki/DragonFly_BSD#Kernel.

    "DragonFly's kernel is a hybrid, containing features of both monolithic and microkernels, such as the message passing capability of microkernels enabling larger portions of the OS to benefit from protected memory, as well as retaining the speed of monolithic kernels for certain critical tasks. The messaging subsystem being developed is similar to those found in microkernels such as Mach, though it is less complex by design. DragonFly's messaging subsystem has the ability to act in either a synchronous or asynchronous fashion, and attempts to use this capability to achieve the best performance possible in any given situation.[7]"
    There's more to kernels than just a _strict_ monolithic or microkernel approach.

    Quote Originally Posted by Ancurio View Post
    https://en.wikipedia.org/wiki/Stupidity

    4 years ago the _microkernel_ Minix3 creator Andrew Tanenbaum was granted 2,5 million € for his "Research on Really Reliable and Secure Systems Software": http://www.minix3.org/news/index.html

    I don't know how well you can reload drivers or whole subsystems after a crash in a monolithic kernel but usually the main focus is very fundamentally on performance and then on everything else: http://www.minix3.org/other/research-projects.html

    Automatic recovery from fatal system errors

    In most operating systems, a fatal error within the operating system, for example, referencing an invalid pointer, leads almost immediately to a system crash. In MINIX 3, such an error leads to the crash of one of the operating system components, but not the entire system. The crash is reported to a system component called the reincarnation server, which takes an appropriate action, typically including logging the event, notifying the system administrator, and restarting the failed component. For stateless components, the recover is very quick and completely transparent to application processes, that is, they do not even notice the failure and recovery. Research on automatic recovery of stateful components is underway. Sample paper on recovery in MINIX 3.
    Last edited by ArchLinux; 11-04-2012 at 01:40 PM.

  9. #9
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    Quote Originally Posted by ArchLinux View Post
    What is your fucking point?

  10. #10
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    Quote Originally Posted by Ancurio View Post
    What is your fucking point?
    The irony.

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