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c0deR3D

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Ask HN: Why is Yocto so slow but so popular?

2 points·by c0deR3D·작년·5 comments

Ask HN: Who is using PowerPC in modern computing?

6 points·by c0deR3D·2년 전·4 comments

Ask HN: Why can't modern smartphones play music smoothly?

19 points·by c0deR3D·2년 전·47 comments

comments

c0deR3D
·9개월 전·discuss
Had been using this quite some time ago, it is sad that it has only 1-CPU support, preventing some SMP bugs from emerging.

Wonder if it's hard to make it SMP, if too many places use something like #ifdef CONFIG_ARCH_IS_UM to tell whether it is single CPU, it might be hard.
c0deR3D
·작년·discuss
Same here.
c0deR3D
·작년·discuss
When would Apple silicons made natively support for OSes such as Linux? Apple seemlingly reluctant to release detailed technical reference manual for M-series SoCs, which makes running Linux natively on Apple silicon challenging.
c0deR3D
·작년·discuss
Reminds me of User Mode Linux, which AFAIK, runs only on Linux, maybe *nix.
c0deR3D
·작년·discuss
Nope, mine runs on a native Linux box featuring Intel i7-1370P and 32GB RAM. Maybe Xilinx has some tuning which makes Yocto become slow at parsing the recipe dependency and the likes.

I've tried asking the Xilinx community, and got only a reply saying that there is a database in Yocto which limits the scalability.
c0deR3D
·작년·discuss
Your scenario makes me suspecting that it is Xilinx flavored Yocto causing the problem. I think that removing some unused Xilinx-specific layers/recipes can reduce the prologue and epilogue execution time.
c0deR3D
·2년 전·discuss
Got me wondering, how does it works?
c0deR3D
·2년 전·discuss
Out of curious, does BPF now capable of capturing all the context switch events such as CPU trap?

Also, if the overhead is negligible, maybe the author can try to merge this into mainline with the use of static key to make the incurred overhead switchable. In spite of the static key, the degree of the accompanied inteferences on cache and branch predictor might be an intriguing topic though.
c0deR3D
·2년 전·discuss
In the near future, people can control appliances with purely their own consciousness, and the only prerequisite is that it requires a minimum consiciousness level, which is reachable for most of the human being. Lastly, we usually think that people living in the Stone age are primitive people. Are they?

https://twitter.com/Michell51304
c0deR3D
·2년 전·discuss
If this is the case, it's weird then. Why releasing CPU for only a glimpse saves battery?
c0deR3D
·2년 전·discuss
Sure, I'd try remove the app from the power efficiency restricted app list, which by default are enforced on all apps.
c0deR3D
·2년 전·discuss
Yes, I was using Bluetooth headphones at the moment. I don't have the app name at hand, but I know that the app is also a file manager.

So there's probably jitter in my headphones, or the app was not suppose to do music playback smoothly because that's not its main usage.
c0deR3D
·2년 전·discuss
Nope, mine is a playlist with only 3 local-stored tracks. Yes, I loop these 3 tracks all the time.
c0deR3D
·2년 전·discuss
[flagged]