The Linux Scheduler: A Decade of Wasted Cores
http://www.i3s.unice.fr/~jplozi/wastedcores/files/extended_talk.pdf
LINUS TORVALD AND LINUXFAGS ABSOLUTLY BTFO,
What a bunch of fucking cucks, can't be cucked harded that than
Fucking retards using Linux aka IDLE-CORES-OS
AHAHAHAHAH, fucking cucks. THE KEKEST IN ALL /g/ if not in the Universe
Being a ricer on Linux is like being a Chief only cooking with piles of shits.
Ahahaha, damn cucks.
>>54219900
Could we disregard the retarded behavior of OP and have a real discussion, please?
>>54219900
>"Nobody actually creates perfect code the first time around, except me. But there’s only one of me.” Linus Torvalds, 2007
Smug OS.failure
what a good thread op today op is not a cuck faggot
>>54219927
Patch your failed OS, you failed OS user.
https://github.com/jplozi/wastedcores
>>54219968
First of all, you don't know what OS I'm using. Second, that's not the point. I just want to have a real discussion and not pure shitposting.
>>54219983
>I just want to have a real discussion and not pure shitposting.
On 4chan ? Wow you sure like to waste energy, just like Linux.
>>54220009
>Wow you sure like to waste energy, just like Linux.
Fucking A, anon. Fucking A.
This is absolutely nuts!
If this result is true, our Linux machines have been wasting 13-24% of our silicon and energy for years (that number is for "typical Linux workloads") because the scheduler fails to fulfill its most basic duty.
The quotes from Linus in the paper just twist the knife.
wtf..i hate linux now
>not knowing to convey ideas in a non-retarded, raging way
I'm sorry for you bro
Literally anyone with rudimentary technical knowledge understands what a cluster fuck Linux is under the hood.
Only retards run it thinking they're running UNIX. Pathetic really.
>>54220283
What would you recommend instead? FreeBSD? OS X (not joking)?
>>54220009
>>54220024
Pathetic, painful samefag
>>54220338
>>54219900
>I have no idea of the topics being discussed.
>I need to present my opinion in the most childish and emotional way possible.
>>54220310
FreeBSD and OSX are acceptable.
Multi-core architecture was a mistake.
If only atoms were smaller... To bad they're bloated just like americans
>>54219900
>doesn't even suggest that Linux has multiple schedulers
>doesn't even mention which of those available show those symptoms
Great talk there, kid.
>>54220380
*tips fedora*
>>54219900
/sci/ here, not sure what the board culture is here so ignore me if the point of this thread is just to post funny memes.
There's a thread in the linux kernel mailing list.
https://lkml.org/lkml/2016/4/23/135
>>54220510
*tips menorah*
>>54220009
I will admit, I had a hearty kek.
>>54219983
Discuss it on HN:
https://news.ycombinator.com/item?id=11501493
>>54220527
Holy shit, since when do they have those fucking stupid googlel+ and leddit buttons?
Didn't understand a thing after they started talking about CFS in action.
Anyways the point is interesting. I don't believe we are missing 13% of our CPU performance, though. They only mentioned one type of benchmark, which raises suspections.
>>54220527
Who's that Peter Zijlstra he's seems pissed.
>>54219900
Welcome back from whatever rock you where living under.
>>54219900
I don't care about the content of the rest of your post, but you are using the word cuck incorrectly.
If you use proprietary software that doesn't respect you and controls you instead of you controlling it, you are a cuck. It is comparable to being forced to watch a guy fuck your wife and humiliate you, while you pretend to like it because you are, in fact, impotent.
If you didn't know what the word actually means and were just trying to use it as a meaningless meme insult, now you are informed.
>>54219900
so when its fixed my pc is going to become 13-20% faster for free? And this is on top of already being faster than all other existing operating systems for my projects?
Neat.
>>54221149
Meanwhile in cuckland...
>http://www.computerworld.com/article/3027911/microsoft-windows/windows-server-2016-could-cost-you-more-than-you-think.html
>Windows server 2016 will charge per core
Yet another reason to purchase the new Apple MacBook Pro with Retina Display.
>THEY FELL FOR THE LINUX MEME
My first thought was "So now they can fix it, then."
>>54220214
Nice try rajesh.
Pro GNU/linux posts just got pruned.
It's a conspiracy.
So what you're saying is that soon I'll be getting an update that will improve my performance by 12%? I love Linux!
>>54220841
>If you use proprietary software that doesn't respect you and controls you instead of you controlling it, you are a cuck.
All of 4chan users are cucks.
>>54220283
>>54220310
>>54220468
>linux is not acceptable
>OS X is
are you guys serious ?
>>54221507
Explain yourself. And don't come up with an excuse Stallman would use.
>>54220009
that was good
+1
>>54221507
the only bad thing about OS X is the gui, people who actually use computers don't care about the gui.
This leaves us with a nice unix environment to use
So that means my system will run 13% faster than it does now, I don't see anything wrong with it.
With proprietary software you probably wouldn't even notice about the issue, and remain forever cucked by your corporate overlords.
>>54219900
>be the year 2025
>boot up Windows-As-A-Service TM laptop, running Windows 11
>It's ad-supported and only costs $30/month on a 3 year contract.
>Have to use my Facebook TM account to log in
>ERROR: Windows has used face detection to determine you are not using a valid Facebook TM account.
>Forgot that Hillary made circumventing the botnet illegal in 2018
>Can only download apps from the Windows TM Store.
>It's ok though, because Microsoft is the best.
>Start playing the new Windows TM Farmville Game which I found on Bing.
>Midway through Windows forces a reboot to install updates.
>While rebooting, feds kick in my door for torrenting loli pr0n.
Sure feels good being a Windows user.
>>54221664
Ebin greentext, reminded me to vote Trump.
Interesting presentation. Would love to see Linus's arrogant response.
I switched from OS X 2 months ago, the best decision I've ever done. I'd rather have 87% of my cpu power on Linux than having a 100% cpu power on OS X
>OS X
The thing is OS X won't give me control at all. I'm a fan of technology who is constantly learning, sometimes I hit walls on OS X I can't do certain things and it stops me from learning, this started to haven more often when advancing to more complex stuff. Also my productivity was damage with the terribly done user interface that was also permanent. I almost forgot to mention how I started to feel the sandbox as my knowledge about tech was growing how everything started to feel like tools for kids, like so deprecated and done so wrong in every way that it made me try another system.
Probably there are also a lot of details, maybe little ones and some other not so little I must be forgetting. I'm sure of this, it's a fact, just can't remember right now sorry.
>Arch Linux
Right after the pain that isntallation was, I boot to this tty can't do shit.
>tfw completely n00b
Bought a book started to study administration of systems, then bash scripting, automatization, installed a desktop enviroment, uses qt interface? C++ api with GUI
<3<3<3<3<3<3<3<3<3<3<3<3
I can make my own tools, and they integrate with desktop themes and run in a natural enviroment flawlessly.
Lovely keayboard shorcuts, the ability to move and resize the windows with shortcuts, god there are so many things I like about these. Even the file manager was rocking, I was able to get everywhere without even looking at my mouse.
I'm running out of words but to put it simple I like linux more :D
Hahahaha I told you guys Linux was made by an amateur guy with an oversized ego.
What a meme kernel made by amateurs and hobbyists.
>>54221992
>OS X won't give me control at all
The kernel is 100% open source, of course you have control. A bad workman blames his tools etc.
Daily reminder this is why we have BSD.
>>54222096
>He delves that deep
He means he rices his desktop.
>>54222118
Hell, you can easily do that if you want to.
>>54219900
I don't want to pajeet this thread that could have been a quality one, but could this be the case on my windows install?
If so, is there any way to cross-platform check scheduling performance, even without source?
>>54222118
Oh yes motherfucker I'm going kernel level to switch off window shadows, so comfy, OS is such a beauty, let's all use OS X. Let's make OS X desktop threads with your neighbor who is also a faggot >>54222263
Why would someone out of the seekr3t club going on desktop thread would "rice" his desktop. also since when customizing you UI become so edgy? "rice", what the fuck is this shit, I bet you call this # "The Hashtag". go to hell bitch
So Linux is obsolete, what's the news? It's monolithic shit!
Hurd will replace it soon anyway.
>>54222394
>Hurd will replace it soon anyway.
>>54222404
Go to bed, Torvalds.
>>54222393
>ricing means he's a fan of technology and constantly learning.
kek. I'll give you a tip. if you want to learn, learn dtrace.
>>54222394
>soon
>>54222647
I don't use linux, but it's always hilarious to see how smug Linus Memevalds can be whenever someone points a flaw in his work.
>>54222826
Reminds me of when he responded to the stallman pasta and called him a fucking retard or something along those lines
>>54222394
>Hurd
Godlike meme, my friend.
>>54222885
Kek. It's honestly such a sad shame that one of the best operating systems I like and enjoy is created by one of the least likeable persons imaginable. Richard Stallman seems like a chill dude who'd be fun to hang out with. Linus would probably just keep telling you about how linux should be preinstalled on the desktop.
>>54222961
Stallman is a cultured guy.
Torvalds is a code monkey.
How's BSD these days?
>>54223044
Why is it relevant? It doesn't protect your freedoms, so it's out of the question!
>>54223044
As great as it ever was. Reminder that BSD would have the same install base as Linux if they weren't being sued by AT&T at the time Linux was being hacked together.
>>54223106
Fucking this. Install Gentoo.
So now we get a performance increase and get to watch nerds get mad at each other?
>>54223123
Nope, it's not popular because of the license.
Go GPL or go home!
>>54223167
That might be true, since it obviously didn't get to where it is on technical merit.
This is the price we all must pay for our freedoms.
>>54223254
CFS isn't the only scheduler available for linux
>>54219900
Jokes on you, I've been using BFS all along.
>>54223314
>>54223355
Of all of the schedulers the developers purposely chose the broken one as default.
laughingwhores.jpeg
>>54219900
I'd just like to interject for a moment. What you’re referring to as Linux, is in fact, GNU/Linux, or as I’ve recently taken to calling it, GNU plus Linux. Linux is not an operating system unto itself, but rather another free component of a fully functioning GNU system made useful by the GNU corelibs, shell utilities and vital system components comprising a full OS as defined by POSIX.
Many computer users run a modified version of the GNU system every day, without realizing it. Through a peculiar turn of events, the version of GNU which is widely used today is often called “Linux”, and many of its users are not aware that it is basically the GNU system, developed by the GNU Project. There really is a Linux, and these people are using it, but it is just a part of the system they use.
Linux is the kernel: the program in the system that allocates the machine’s resources to the other programs that you run. The kernel is an essential part of an operating system, but useless by itself; it can only function in the context of a complete operating system. Linux is normally used in combination with the GNU operating system: the whole system is basically GNU with Linux added, or GNU/Linux. All the so-called “Linux” distributions are really distributions of GNU/Linux.
>>54223369
Because they're amateur code monkeys doing linux dev in their free time. You can't expect commercial quality from their work.
>>54223434
I'm pretty sure linus cuckval is not working on linux in his freetime.
>>54223447
He spends most of his time screaming about how much better his kernel is than XNU and Apple fucked up by not using Linux.
tippy top kek.
>>54223447
Actually he is. Nobody payed him to start linux, he did it out of self interest. Linux is a kernel initially designed to be for his needs, but then it evolved rapidly and became what it is today. He continues to update it because of the money, but initially it was a hobbyist programming system made by a european guy in his basement.
It's up to the developers of the operating systems using linux (arch devs, canonical devs etc.) to make the changes as they see fit, and design their own operating system off of Linus' work.
>>54223477
Exactly.
>why aren't the defaults for a kernel designed to work on everything from routers to supercomputers perfect for my very specific workload! ugh!
>>54220841
cuck
>>54223623
the defaults are perfect for anything since they are broken.
>>54220502
There's a single mainline CPU scheduler and it's CFS.
You may be one of those retarded faggots that confuse I/O schedulers (like cfq, deadline and noop) with CPU schedulers.
>>54221992
8====D
:^ )
It's called a generic kernel for a reason. If you want something optimized for your own specific purpose then just fucking edit the source code and compile it.
Wait so Linux has been outperforming windows in games with its hands tied behind its back?
>>54225148
arguably there's nothing here to suggest CFS is worse than windows' scheduler (or any other OS)
it's just saying that it's not perfect
>>54222961
>>54223002
Lmao what's up with the stallman shills? This guy is a pure mongoloid and the only things he's worked on is irrelevant shit.
>>54219900
Thank you pajeet. 300 rupees have been deposited to your shilling account
>>54224439
Not him, but yeah I'm one of those retards. Thanks for clearing it up. I doubt I'd know what a scheduler was if the 3rd worlders' on XDA didn't blame everything on it
>>54225450
Pretty sure he's the original author of gcc and emacs, which are still in very wide use
>>54220527
https://lkml.org/lkml/2016/3/31/1108
>[PATCH] Implement leftpad syscall
pure gold
>>54219900
implying you aren't wasting cores playing vidya
>>54225720
Not sure the current version of gcc has any of his contributions anymore.
>>54225720
Both suck.
>>54223355
Checked
>>54219900
Good thing I never fell for the multi core meme.
Athlon 2000+ mobility master race!
>>54225731
and people wonder why torvalds loses his shit from time to time
>>54225731
>>54227504
Care to explain?
>>54227627
a little javascript snippet that simply pads strings was pulled from a javascript "package manager" by a pissed off dev, and it broke shitloads of shitty javascript programs
that link there is someone suggesting the correct course of action is to make what that snippet did a fucking kernel syscall
>>54227627
Leftpad is a simple text processing routine, implementing it in kernel-space is not only bad practice, but isn't really faster as the author claims because it triggers context switching.
>>54227687
So that jew wants to implement functionality from node.js into the kernel?
>>54227702
the package was in npm
something that basic should just be included as part of the rest of programs that need it, at the absolute most as a library, but a kernel syscall? that's just stupid
>>54223434
>amateur code monkeys doing linux dev in their free time
This is onw of the best linux memes I've seen around
NEVERMIND the paid professional developers from IBM, HP, Oracle, Novell, Google, Intel, etc working on Linux
>>54227817
>bbbuuut corporations hate linux
You can't have it both ways.
Why do deluded pinko GNUcucks think corporations are big fat mean villains and capitalism is evil?
>>54219900
>even like this Windows and OS X have worse scheduling
How do you even fuck up this bad?
>>54219931
I fucking hate his arrogance.
>>54227504
>>54227687
>>54227698
>>54227702
>>54227800
it was a fucking joke patch, you autists
>>54228187
>I was only pretending guys :^)
These are Linux guys shitting on the Linux scheduler in order to make it better. Even as they rip it apart, it's still light years ahead of anything Microsoft has and it's only going to get better.
>see Clear Linux
>>54228264
>light years ahead
that's a measure of distance, not time, you fucktard
>ahead of anything Microsoft has
okay so compare the CFS scheduler algorithm to the one that the NT kernel uses.
oh wait, you don't even know what CFS stands for, let alone have any fucking clue as to the scheduler in NT, and are just a faggot 'muh freedoms' stallman-worshiping freetard neckbeard.
>>54220009
>you sure like to waste energy, just like Linux
Cool. An issue may be found, people are taking notice, steps to rectify it are being thought of and planned. Fix will release soon.
Sounds like FLOSS is working better than proprietarie's, "Let's hope no one notices this clusterfuck" approach.
>>54225699
we're talking about short term CPU scheduling algorithms
there's some extra context for ya
>>54228187
Sucking a dick jokingly is still sucking a dick.
>>54228566
Even if you say no homo?
>>54228387
Windows can't even handle more than 64 CPUs. It's a joke OS, Pajeet. The DOE and NASA wont even touch it.
>>54227997
Because they are recluse autists who suffer from the Intense World Syndrome. So they tend to obsess over small trifling issues that most normal people don't even care about.
So how would I go about patching my kernel on Mint 17.3?
>>54228826
use diff.
>>54220009
Fucking lol. Have some rebbit gold from me, good sir!
sudo mkdir -p /etc/portage/patches/sys-kernel/gentoo-sources && cd /etc/portage/patches/sys-kernel/gentoo-sources
for i in group_imbalance missing_sched_domains overload_on_wakeup scheduling_group_construction; do sudo wget https://github.com/Freeaqingme/wastedcores/raw/master/patches/$i.patch; done
sudo emerge gentoo-sources
cd /usr/src/linux
sudo mount /boot
sudo make -j5
sudo make install; sudo make modules_install
sudo cp /boot/vmlinuz-4.5.2-gentoo /boot/efi/boot/bootx64.efi
reboot
How low /g/ has fallen.
>>54229022
/g/ has been shit for years now. Sorry to break it for you.
>>54228430
Fucking this, we wouldn't even know about it.
So adding overhead that's "negligible" fixes the problem?
More power consumption doesn't actually matter?
>>54221596
>'this OS is the fastest we can do right now goys'
>wait to fix known performance bug until next version is released so you can charge them again
>'h-hey guis it's 10% f-faster now'
>>54219900
Meanwhile on Windows, the default scheduler attempts gives a task near 100% cpu the entire cpu, instead of fairly distributing timeslices. Muh games. So when a program is blocking on another program, it takes _longer_ to unblock than it otherwise should.
>>54229461
Shhh, the Winbabbies might hear you.
>people use cfq instead of deadline or even BFS
>>54224439
isnt there another scheduler that you can compile in? I remember it being all over phoronix
>>54230584
>people use cfq instead of deadline or even BFS
You evidently have no idea what you are talking about.
How do I replace
"'" with a single quote in sed, every time i tried it just escapes
>>54220283
UNIX hasn't been anything but a clusterfuck since v1
Admit defeat and go fanboy plan 9. Or DOS.
>>54221566
It leaves you with dated tools that anyone who hates GNU must also consider unforgivably harmful, on a system that is just as "bad" for the same reasons linux is supposed to be bad (to other *nix nerds, not to windows users who demand games and office)
>>54219900
So the Linux scheduler is sub-optimal, yet it still crushes Windows and OS X in HPC workloads. Stop being retarded. Linux is still a vastly better kernel than NT and XNU.
>>54230905
>OS X
>HPC
Where/who did this?
>>54220009
switching to bsd
>>54230926
No one. That's the point. Linux is the only kernel well-suited to HPC.
>all these fucking asspained lincucks users
>Linux scheduler revealed to be bad
they write an alternate scheduler or fix the existing one and submit patches upstream. Smart people debate what these results mean and what can be done instead. Scheduler improves as a result. Any Linux user who wants it is able to use it.
>Windows scheduler revealed to be bad
MS says "Fuck you, upgrade to Win10!"and then continues spending their time on adding telemetry and app-store tinsel. Nobody else can do anything about it.
What the pajeets don't understand is that the benefit of free software isn't that there are no flaws in it, its that those flaws can get fixed more easily. You aren't dependent on MS to care about your issue and then get around to fixing it.
>>54231401
Fucking this, Mac or Windows would fix this shit in their next release and wouldn't let anyone know it was ever an issue.
>>54231511
>and wouldn't let anyone know it was ever an issue.
that's a bad thing, not a good thing
>>54231523
I know.
What's worse is that if they don't fix it you wouldn't know there was a problem.
>>54228387
>>light years ahead
>distance not time
>2012 + (8/2)
>being gay
>>54221243
who doesn't charge per core nowadays?
>>54229461
Habla ingles?
>>54229172
Well we already know that NT is shit, it's not like it's news to everyone
>>54231628
Well for NT, i guess if they really wanted to upgrade their performances they would have to break backward compatibility, so it will never happen
Remind me where the public discussion about the shortcomings of the windows kernel scheduler are.
The takeaway point isn't that "lolol linux wasted corez xD". I guarantee you there are worse fuck-ups inside Linux, and I guarantee you there are worse fuck-ups inside Windows, OS X, and BSD.
The takeaway point here is that someone has done good scientific research, found something that isn't working well, and publicly disclosed this fact so that it can be fixed.
If they didn't do that shit, nobody (/few people) would know about linux having a poor scheduler and work would not be performed to remedy the situation.
This is a good thing, not a bad thing.
>>54234112
They've already broken Backwards compat a few times
It's like people don't understand how open source works.
