Are Custom Linux Kernels Faster than Stock? - Chris Titus Tech
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Date: 2022-03-21
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Comments and reviews: 10
Able
This is actually something that I am working on right now. So far, I came to the conclusion, that there is no such thing as the perfect generic kernel. Let me explain: Xanmod is the best for my music production and for games. Having said that, the LQX kernel is not far off at all and if it is only about gaming then even the vanilla Arch kernel is looking pretty good. But when I compile stuff or do anything that just requires raw compute power then the best kernel so far seems to be the znver2 from the AUR. See where I am coming from?
All of the kernels have been compiled by me with rather aggressive custom CFlags in order to try to squeeze the last bit out of the machine. Next in line are the Xanmod-RT and the Xanmod-Cacule, the latter claiming that its CPU scheduler is superior to anything else.
But I already sense, that I will never find that one perfect kernel that fits it all. But maybe I can at least manage to reduce the amount of them because right now it kinda feels like if I had a dedicated kernel for each application.
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This is actually something that I am working on right now. So far, I came to the conclusion, that there is no such thing as the perfect generic kernel. Let me explain: Xanmod is the best for my music production and for games. Having said that, the LQX kernel is not far off at all and if it is only about gaming then even the vanilla Arch kernel is looking pretty good. But when I compile stuff or do anything that just requires raw compute power then the best kernel so far seems to be the znver2 from the AUR. See where I am coming from?
All of the kernels have been compiled by me with rather aggressive custom CFlags in order to try to squeeze the last bit out of the machine. Next in line are the Xanmod-RT and the Xanmod-Cacule, the latter claiming that its CPU scheduler is superior to anything else.
But I already sense, that I will never find that one perfect kernel that fits it all. But maybe I can at least manage to reduce the amount of them because right now it kinda feels like if I had a dedicated kernel for each application.
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Peanut
I just installed a bunch of custom kernels tonight, the Zen Kernel(same as liquorix i guess for Arch/Manjaro), Xanmod, and tkg-pds. All of them are quicker than stock. Zen wouldn't recognize my bluetooth devices though. In games i noticed the tkg-pds kernel was far superior then the other 2. Using the tkg-pds kernel for zen architecture(on my ryzen7 1700x) all my games ran buttery smooth Witcher 3 on ultra, Dragonquest 11, and Path Of Exile using the vulkan renderer added in the last patch. In fact these 3 games now run much better for me in Manjaro then they ran in windows 10! Linux gaming is really making insane leaps in performance!
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I just installed a bunch of custom kernels tonight, the Zen Kernel(same as liquorix i guess for Arch/Manjaro), Xanmod, and tkg-pds. All of them are quicker than stock. Zen wouldn't recognize my bluetooth devices though. In games i noticed the tkg-pds kernel was far superior then the other 2. Using the tkg-pds kernel for zen architecture(on my ryzen7 1700x) all my games ran buttery smooth Witcher 3 on ultra, Dragonquest 11, and Path Of Exile using the vulkan renderer added in the last patch. In fact these 3 games now run much better for me in Manjaro then they ran in windows 10! Linux gaming is really making insane leaps in performance!
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Dynarush
Your CPU isn't boosting properly. It should be hitting 4ghz at stock boost. It's PBO that's not stock, seems like you've disabled the stock XFR. The 2700X needs all the clock speed it can get. A 1700X would out perform your CPU at it's stock boost of 3.5Ghz. You should swap it out for a 3600, it nearly matches a 2700X in productivity with 2 less cores and smashes it in gaming. Plus you need to do more benchmarks, this doesn't really show anything
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Your CPU isn't boosting properly. It should be hitting 4ghz at stock boost. It's PBO that's not stock, seems like you've disabled the stock XFR. The 2700X needs all the clock speed it can get. A 1700X would out perform your CPU at it's stock boost of 3.5Ghz. You should swap it out for a 3600, it nearly matches a 2700X in productivity with 2 less cores and smashes it in gaming. Plus you need to do more benchmarks, this doesn't really show anything
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Ph42oN
I think the same about custom kernels. I noticed games being smoother. Im using zen kernel.
Flightlessmango also did benchmark of some kernels, and there you can see the same, more stable while average fps may not be much better.
I have been reading some people say about how linux is stuttery in gaming and windows is better in that, i think part of that is due to default kernels not being good for gaming.
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I think the same about custom kernels. I noticed games being smoother. Im using zen kernel.
Flightlessmango also did benchmark of some kernels, and there you can see the same, more stable while average fps may not be much better.
I have been reading some people say about how linux is stuttery in gaming and windows is better in that, i think part of that is due to default kernels not being good for gaming.
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Joseph.
I ended up installing Xanmod for my ryzen laptop as a solution to a -CPU leak- I was having for KDE plasma.
turns out the kernel wasn't the problem, KDE had some messed up config or something that I found a command list that ended up fixing it properly.
but after installing xanmod I'll probably keep it just because it's a better kernel
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I ended up installing Xanmod for my ryzen laptop as a solution to a -CPU leak- I was having for KDE plasma.
turns out the kernel wasn't the problem, KDE had some messed up config or something that I found a command list that ended up fixing it properly.
but after installing xanmod I'll probably keep it just because it's a better kernel
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Cuttlefish
I'm using 5.4.43-1-MANJARO. As someone with aggressive ADHD, and using Linux to organize my madness, tweaking my computer is 1 of 20 different hobbies I'm constantly in and out of so it's pretty far down the list to play around with different kernels. Custom is a relative term anyways, this is Linux we're talking about.
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I'm using 5.4.43-1-MANJARO. As someone with aggressive ADHD, and using Linux to organize my madness, tweaking my computer is 1 of 20 different hobbies I'm constantly in and out of so it's pretty far down the list to play around with different kernels. Custom is a relative term anyways, this is Linux we're talking about.
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Anxious
I'm learning all this programming stuff through osmosis. Regimented classes are my kryptonite. That being said, I feel really small right now. Hope I can eventually understand all this stuff.
What I know: Kernels work with compilers. Kernels are closely tied to the OS its being used on.
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I'm learning all this programming stuff through osmosis. Regimented classes are my kryptonite. That being said, I feel really small right now. Hope I can eventually understand all this stuff.
What I know: Kernels work with compilers. Kernels are closely tied to the OS its being used on.
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Григорий
Clearlinux kernel hyperfastest on Intel cpu. i test in manjaro and have +30 min fps in SoTR benchmark and +10 avg fps (compare with stock kernel). Intel skylake, rx 580, SoTR running in SteamPlay (DXVK) on Highest 1920x1080. Stock - min 1, avg 37, clearlinux - min 28, avg 44.
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Clearlinux kernel hyperfastest on Intel cpu. i test in manjaro and have +30 min fps in SoTR benchmark and +10 avg fps (compare with stock kernel). Intel skylake, rx 580, SoTR running in SteamPlay (DXVK) on Highest 1920x1080. Stock - min 1, avg 37, clearlinux - min 28, avg 44.
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vladisimusI
Two things:
I don't consider Ubuntu default kernel mainline as it has some Ubuntu specific patches.
I don't think Xanmod, RT, -ck, zen are -custom- kernels as you do not customize them.
Custom kernel is the one you configure and compile yourself, maybe add some patches...
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Two things:
I don't consider Ubuntu default kernel mainline as it has some Ubuntu specific patches.
I don't think Xanmod, RT, -ck, zen are -custom- kernels as you do not customize them.
Custom kernel is the one you configure and compile yourself, maybe add some patches...
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Catching
On Pop!_OS Liquorix had the lowest deviation and error. But I've noticed doing multiple tests I've gotten a lot of variation between the same Kernel. I even tried a benchmark with irqbalance off. But I'm still going to test them with actual gameplay and see if I feel a difference.
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On Pop!_OS Liquorix had the lowest deviation and error. But I've noticed doing multiple tests I've gotten a lot of variation between the same Kernel. I even tried a benchmark with irqbalance off. But I'm still going to test them with actual gameplay and see if I feel a difference.
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