that was thorough, thank you.
I wonder what there own ‘take’ on core, extra, and multilib stuff is?
It would be kind of cool to run another set of compatible guts inside your existing shell/setup, as macabre as that sounds :).
It would have to be an improvement or benefits I could understand before I would undertake that. Honestly, I just love that one is able to. Thank you again.
ALHP’s take is just to provide packages that are build identical to Arch except they are compiled enabling additional, modern CPU features, which can lead to improved performance. But that is not a broad “everything gets x% percent faster”, but depends on the application. There’s a good chance you wont even notice if you don’t run one of those special cases.
Arch doesn’t do that because they don’t have the infrastructure in place to provide architecture specific versions at the moment, and requiring a higher baseline would exclude people who are below it. So Arch ships the most common denominator to everybody.
Just to throw a phoronix benchmark around: https://www.phoronix.com/review/cachyos-x86-64-v3-v4/2
So usually there isn’t a downside, you potentially just leave some performance on the table, but don’t expect a miracle.
PS: Cachy on the other hand is pretty opinionated on providing patched packages in many places.
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So far I’m happy with having added the CachyOS repos to my system, it’s still just Arch just with some extra repos. I have not tried ALHP but since I had been reading a lot of people saying how good CachyOS was I decided to go with their repo instead of the ALHP repos. Just having a quick glance at the ALHP repos it seems to do all packages while CachyOS repos just has a few selected packages plus some extras.
I want to think (I haven’t really analyzed the repos) that they have wisely chosen those that would benefit most by better CPU utilization (I notice things that I would consider would benefit are indeed in the cachy opt’d repos). Ie the obvious low hanging fruit.
Not sure what exactly you are saying but it sounds like that ALHP repos are well thought out since they are just clone the Arch packages with cpu optimizations. That CachyOS repos are more what you would consider obvious benefits, as those obvious things is what CachyOS is known for. Did I understand that correctly?
I think so?
I mean I don’t think the ls command or the cd command have much advantage to being more efficient, where as the display driver and something like ffmpeg do.
Cool! 
I was just wanting to make sure I understood your last reply. As it was a bit confusing, my first language isn’t English that’s why I was asking.
I’m bored, so I tried the Cachy repos, can’t remember how many packages it installed, but it was north of 1300 (was on the phone…).
Rebooted, no issues, but my perception is my machine,
(Ryzen7/RTX3070), feels snappier, a lot snappier.
I used the curl/script from their website.
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That’s my perception too (though I used a full blown reinstall).
I had my ventoy USB plugged in ready for it to fall flat on it’s arse 
Didn’t need it, but it was a bit “Squeaky bum time” as we say in the UK!
I was reading the thread and I notice people are suggesting to use the Chaotic AUR Repository. I did notice this document in the CachyOS Repository to add their repository directly:
For myself I am interested in trying their Kernels (like how I test the ZEN kernel). Is there a reason why we don’t take this approach?
I always recommend against adding 3rd party repositories.
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I did that for a while but I didn’t notice any performance gain or improved performance on any of my games, even after swapping out all the normal packages with the optimized packages.
You can just install the kernel with pacman if you only care about testing it out.
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I agree with your post. At work I would run this kind of thing in isolation. At home I have to walk the delicate line of being a hobbyist and not getting too far sucked down the rabbit hole to instability land. I did not like that feeling every time I hit hybrid Nvidia/Intel video driver issues when on the Manjaro releases. I do lean in the direction that in general, more detail and automated code review needs to be introduced in the Arch world. We are the bleeding edge.
Not to stray too much, but the AUR has multiple packages for things like Joplin. So you have an App image, then compiled version. There are 4 packages which just cause confusion. This kind of thing should be better managed. Its a ticking time bomb in my mind.
Thanks everyone for pooling your knowledge in this post (fascinating as always).
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Try linux-zen from ALHP
I’ve been running the Zen kernel a while now. Currently running linux-zen 6.16.zen2-1
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I’ve tried both linux-zen and linux-cachyos kernel, as well as adding cachyos repos and optimized packages. I never noticed a difference when running my games, so far seems more it’s just because everyone is saying it that they give better performance and you can’t really measure something that feels better.
Seems more the performance again are going to depend on the hardware and applications. Phoronix did some benchmarks and seems CachyOS doesn’t have better performance in all tested applications.
So in my opinion selling that x86-64-v3 and x86-64-v4 optimized packages give noticeable performance gains seem more like market terms rather than facts that you can see.
Even though I don’t notice a performance gain with optimized packages, I also don’t get what people mean with feel snapper when running linux-zen and linux-cachyos kernel because when compared to just the default linux kernel it feels all the same to me. Like I said you can’t measure what someone feels.
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It’s a very subjective thing, I suppose. Plus, I suspect it varies by hardware. There may be a real, felt difference with one PC, and minimal or none on another.
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I have to agree with this 100%. I honestly don’t believe there is a difference that can be felt. It’s all in ones head. 
In my opinion with the hardware that is out there today if you click on something it should open instantaneously whether it is a program or a browser. If it doesn’t than it’s not good hardware or you have some software issue.
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