Gentoo Image, Which Applications are in and Which are Out

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02 Dec 2024 20:26 #315830 by NTULINUX
Thanks! Yeah, things are going well, just wrapping it up. Latency is a bit high for me but I ran `rtla timerlat top` and some of the spikes are coming from my Radeon GPU. Others are coming from APIC and hrtimer (CPU interrupts, can't tune these out.)

I'm on a Ryzen system and I've noticed that PREEMPT_RT has much lower latency on some Intel hardware. It'll be interesting to see how latency performs on other hardware with the image.

I just pushed a huge update to my portage configs on GitHub, almost ready to publish the updated installer and root filesystem:

github.com/NTULINUX/gentoo_backup/commit...9333804131fbc352c3d5
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02 Dec 2024 23:11 #315839 by royka
Won't irqaffinity=0 help?
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02 Dec 2024 23:50 #315840 by tommylight
Where is the ISO and does it boot in Live mode?
All my Ryzen's are gone except a R7 5700U in a laptop with a TDP of 15W including GPU, so should be worst case scenario for testing.

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03 Dec 2024 06:05 #315858 by NTULINUX
No iso actually, it's a tarball that gets deployed on either an HDD, SSD, USB drive or NVMe and it's not live. :)

Will try irqaffinity=0 -- I also need to play with nohz_full rcu_nocbs and isolcpus.
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