Comments by "Juzu Juzu" (@juzujuzu4555) on "Gentoo Is No Harder Than Arch Linux??" video.

I compile EVERYTHING, I don't use any binaries. After installing everything the 1st time, then you can just do updates on the background or just run the update with & shutdown when you have done your days work. You will have paradigm shift where you start to feel differently towards installing and especially updating things. That's when Gentoo starts to be amazing. Sure if you need certain software like right now and you'll have to compile it, then it sucks, but if time is the essence, then using O1 instead of O2 could be the answer and just allow the next update cycle optimize it thoroughly.
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If you are using your system at 100% 24/7 then those updates are wasting time. Otherwise you would just leave the computer updating while you are doing something else on it, or by when you are not using the computer. I think this is the main misconception about Gentoo. If you were forced to wait for updates, or wait for packages to get installed, then it would truly be for niche group of people.
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@kendarr When you compile you get to strip away useless dependencies, which increase security, make it leaner and faster, and also optimize it the way you want directly to the CPU you have. It's only annoying if you want to install new larger software. On all updates you can just allow those to happen when you are not using your computer. If this all is worth it depends on the user and use case, but I personally am a sucker for optimization even if the benefits would be light.
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@sudonim116 I have all the optimizations GentooLTO has with Ofast. Some packages need lighter optimization to compile. Also I added LTO to use only single partition, which improves LTO (or at least allows better LTOing) but it limits LTO process to one thread. But as I have allowed multiple jobs to be done at once, it rarely slows down the process. All of these things add up. And to me it's worth it, but it's hobby to me so I understand if other people don't care. Add Use flag experimental to Gentoo sources and you can optimize kernel with O3 and make it use march=native from the kernel config.
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@gamezoid1234 I have just Intel iGPU.
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@Hugh_I I have used GentooLTO overlay with ~amd64 and it has been incredibly stable. I only have 2c/4t CPU and I also have Ubuntu Mate. I use Mate on Gentoo also. So I can compare the performance between Gentoo and Ubuntu. And damn the difference is so obvious. Granted I have been optimizing Gentoo as much as possible, it's been my passion forever on computing and life, so Gentoo obviously is made for me. PGO, Profile Guided Optimization, is also amazing on the software that supports it. The problem is that it doubles compile time, but at least I had quite massive improvement from it on Firefox. If you want to compile kernel with O3 and make the kernel use march=native, USE flag called Experimental allows these. After going into USR/SRC/Linux.5.xxx/init and then editing Kconfig. Search "O3" in Kconfig and remove the line that says ARCH Dependent (which is 1-2 lines down from where the only O3 line is). After that you will see "Optimize more for performance (-O3)" option in config utility. I don't know why it's Arch dependent, but it works perfectly without any problems. And I haven't heard anyone having problems with it. Sadly LTO isn't available for kernel, but hopefully should be in the near future. I tried manually if Ofast, Graphite, and the other GentooLTO flags would make kernel faster. By manually changing the .config, but I don't know how I would benchmark kernel, but at least it didn't have positive effects on other benchmarks. Especially on GCC 11 I think O3 makes sense as GCC 11 made some changes that made O2 produce slower code. Most likely it's just placebo (which I think makes it still worthwhile) but in my mind O3 kernel just feels snappier. Like certain things are couple hundredth of a second faster. That's the one good thing for having 7 year old dual core laptop =)
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@ILightWas I didn't post a number, because I'm not confident on my testing, but I got 31% higher score on browser benchmark from Firefox compiled with every possible GentooLTO optimization + PGO vs. having the binary packed Firefox on that same Gentoo. And more importantly O2 with march=native was slower than the binary, only couple of % but still. Even Ofast was still 1% slower. I think the binary is pretty much optimized exactly to suit my dual core 6yr old Intel, so I think the self compiling results would be much more favorable for Ryzen 5900X.
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