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While the Linux kernel LTS support for 4.19 was dropped for some time the oldest supported Linux kernel LTS version is currently 5.4. Update references to use the currently oldest supported Linux kernel LTS version. Signed-off-by: Florian Lehner <florian.lehner@elastic.co>
gnurizen
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Apr 16, 2025
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Awesome! My understanding is 5.4 has bounded loops and we can start removing loop unrolling which should make programs smaller and faster to load. |
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Right - some things in the eBPF programs can change and simplified. I didn't do it with this PR, as I wanted first to get consensus on this bump of the minimal supported kernel version. |
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This is great from my perspective. It will make it much easier for Parca to collaborate with the rest of the community by upstreaming our work. |
Signed-off-by: Florian Lehner <florian.lehner@elastic.co>
rockdaboot
approved these changes
Apr 16, 2025
christos68k
approved these changes
Apr 16, 2025
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From what I read, with 5.2+ the instruction limit has been raised from 4096 to 1M. |
This was referenced Jul 8, 2025
This was referenced Aug 14, 2025
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While the Linux kernel LTS support for 4.19 was dropped for some time the oldest supported Linux kernel LTS version is currently 5.4. Update references to use the currently oldest supported Linux kernel LTS version.
Proposed change based on the discussion in https://cloud-native.slack.com/archives/C03J794L0BV/p1744317888826789 - FYI @gnurizen @umanwizard