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Linux 5.0 Kernel Performance Is Sliding In The Wrong Direction

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  • Cybmax
    replied
    Originally posted by Wojcian View Post


    I'm glad, because it seems Linux 5.0 kernel performance is sliding in the right direction which can't be said about Ubuntu kernels.

    4.18-custom: http://s000.tinyupload.com/index.php...80013360624564

    5.0-rc7-custom: http://s000.tinyupload.com/index.php...85656455218916
    Thx. Not that different from my own custom hacks, save for some driver stuff

    Could be that the Ubuntu-ppa for the "rc" kernel is not 100% final, but nice to see something can be gained from the 4.18 kernel too. I would possibly assume Ubuntu default kernel has a wee bit too much debugging and unneeded stuff enabled "just to be safe" in case you try to install Ubuntu on some 1992 model crap-o-matic piece of hardware?

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  • r08z
    replied
    Originally posted by Wojcian View Post

    Here you go:

    https://openbenchmarking.org/result/...KH-TEST1982530

    I'm glad, because it seems Linux 5.0 kernel performance is sliding in the right direction which can't be said about Ubuntu kernels.

    4.18-custom: http://s000.tinyupload.com/index.php...80013360624564

    5.0-rc7-custom: http://s000.tinyupload.com/index.php...85656455218916
    Good job. Glad to see proof that custom kernels with crap disabled will always run the fastest.

    Leave a comment:


  • tildearrow
    replied
    Originally posted by alcalde View Post

    Seriously? We're going to argue that saying you can't mistreat other people or use slurs leads to poor code? This is why Linux users are portrayed as Neanderthals with beards in the popular media; we're not doing anything to dispel the image.
    Have you even read the full "Code of Conduct" document in depth? The "Code of Conduct" (specifically the Contributor Covenant) may sound like a set of typical "be nice" rules, but it actually is a document on having to accept anyone's code, in the name of "diversity", regardless of quality/bugs.

    Leave a comment:


  • Wojcian
    replied
    Originally posted by Cybmax View Post

    I am very interested in the result, and possibly any custom config to compare to ubuntu default.
    Here you go:

    https://openbenchmarking.org/result/...KH-TEST1982530

    I'm glad, because it seems Linux 5.0 kernel performance is sliding in the right direction which can't be said about Ubuntu kernels.

    4.18-custom: http://s000.tinyupload.com/index.php...80013360624564

    5.0-rc7-custom: http://s000.tinyupload.com/index.php...85656455218916
    Last edited by Wojcian; 02-24-2019, 03:30 PM.

    Leave a comment:


  • linuxgeex
    replied
    I haven't looked at the kernel commit log, but given the announcement about SMAP I wouldn't be surprised if this regression is a result of adopting SMAP protection in some of the kernel subsystems.

    I hope that SMAP ends up being something that can be toggled at boot time so that it can be used during kernel development to test for bad design, and used for security-hardened servers and devices, but I wouldn't want SMAP enabled on my desktop or media player.

    Leave a comment:


  • Cybmax
    replied
    Originally posted by Wojcian View Post

    To be fair I'll also test 4.18 kernel with my custom config to see how it performs against 5.0. What I don't like Ubuntu has debugging enabled even for final releases. I'm not sure how it is in other distributions. FreeBSD has this disabled (and this is good!) as far as I remember. Probably the same in Windows, OS X, so it puts Ubuntu and maybe few other distributions in disadvantage for no reason.
    I am very interested in the result, and possibly any custom config to compare to ubuntu default.

    Leave a comment:


  • Shevchen
    replied
    Originally posted by alcalde View Post

    Seriously? We're going to argue that saying you can't mistreat other people or use slurs leads to poor code? This is why Linux users are portrayed as Neanderthals with beards in the popular media; we're not doing anything to dispel the image.
    Strawman. If SJWs can't take any kind of critique and blame it on "mansplaining", even constructive and valid critique posted in a proper manner will come under the train.

    Originally posted by alcalde View Post
    Wojcian posted a benchmark showing it's a Ubuntu issue rather than a kernel issue, everyone ignores it and starts going on about the evils of being asked not to sexually harass women? Sheesh.
    False dichotomy. This has nothing to do with sexually harassing people, its about analyzing the regression.

    Leave a comment:


  • Wojcian
    replied
    Originally posted by hreindl View Post

    it was a good job only bechmark Ubuntu and making a topic "buuuuh Linux 5.0 will be slow"?
    this whole topic is one of the reasons i don't give a shit about generic benchmarks at all
    To be fair I'll also test 4.18 kernel with my custom config to see how it performs against 5.0. What I don't like Ubuntu has debugging enabled even for final releases. I'm not sure how it is in other distributions. FreeBSD has this disabled (and this is good!) as far as I remember. Probably the same in Windows, OS X, so it puts Ubuntu and maybe few other distributions in disadvantage for no reason.

    Leave a comment:


  • timrichardson
    replied
    They are script kiddies at best, or second-rate trolls. It's a shame they pollute the comments. At least such comments may have potential for ML detection of morons. . Phoronix articles are first rate but for intelligent comments it's lwn.

    Leave a comment:


  • niner
    replied
    Now that it's been proven to be wrong, I'm waiting for all the people in these thread who falsely accused the kernel developers' adoption of the CoC to be the cause of this "regression" to apologize. Of course you won't, will you? That would require being a real grown up.

    Leave a comment:

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