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> Nobody sensible runs the latest kernel From the article: "Linux 7.0 stable is due out in about two weeks. This is also the kernel version powering Ubuntu 26.
by Meekro 6mo ago
> Nobody sensible runs the latest kernel
From the article: "Linux 7.0 stable is due out in about two weeks. This is also the kernel version powering Ubuntu 26.04 LTS to be released later in April."
Unfortunately, lots of people will be running it in less than a month. At the moment, it'll take a kernel patch (not a sysctl) to undo this-- hopefully something changes.
- Neywiny 6mo agoNot nobody but not everybody upgrades to the newest distros immediately. That's the advantage of LTS. I've even found that a lot of programs have poorer support on 24.04 than 22.04 due to security changes, so I'm fine sticking with 22.04 as my main dev system.
- stingraycharles 6mo agoThis seems to be brushing off a major performance regression just because you personally don’t upgrade for 4 years. I don’t think that’s common at all.
- Neywiny 6mo agohttps://fr.archive.ubuntu.com/stats/stats_of_day-16.html?version=last#:~:text=April%2030%2C%202006,data%20are%20excluded%20from%20statistics)%20: https://fr.archive.ubuntu.com/stats/stats_of_day-16.html?ver... no need to think, data backs it up
- justinclift 6mo ago> ... not everybody upgrades to the newest distros immediately. While that's true, for new deployments the story is often "deploy on the latest release of things available at the time". So, there will probably be a substantial deployment of new projects / testing projects using the Linux 7.0 kernel along with the latest available software packages in a few weeks.
- Maxion 6mo agoI would argue it's mainly inexperienced devs who deploy on the very latest. Once you get some more years under your belt you realize the value of LTS versions, even if you don't get the shiniest shiny.
- yunohn 6mo ago> kernel version powering Ubuntu 26.04 *LTS*
- josh-sematic 6mo agoYes it’s LTS but the point is that the LTS system has overlapping support so you can wait on an older LTS for a bit before upgrading to a newer one. And it’s somewhat prudent to do so if you value stability highly, because often a few new issues will be discovered and patched after LTS goes live for a bit.
- esafak 6mo agoThat's the advantage of LTS? 24.04 is the LTS, not the one you use, 22.04.
- deleted 6mo ago[deleted]
- SoftTalker 6mo ago22.04 is also an LTS release, supported for another year still. https://ubuntu.com/about/release-cycle https://ubuntu.com/about/release-cycle We're just now looking at moving production machines to 24.04.
- apelapan 6mo agoIf you are on a maintenance contract with Ubuntu, 22.04 is supported until 2032. If it aint broken, don't fix it.
- cortesoft 6mo agoAll even number .04 releases are LTS in Ubuntu
- vasco 6mo agoSomeone said "its fine nobody uses this" and someone else gave the world's biggest slam dunk of "Ubuntu in 1 month" and your reply is that "not everyone does it". How far from the point can you be! In the Linux world this is the worst possible scenario, distro with the largest adoption, LTS.
- Neywiny 6mo ago22.04 is still potentially more prevalent than 24.04 according to https://fr.archive.ubuntu.com/stats/stats_of_day-16.html?version=last#:~:text=April%2030%2C%202006,data%20are%20excluded%20from%20statistics)%20: https://fr.archive.ubuntu.com/stats/stats_of_day-16.html?ver... . 26.04 will take some time before it's largely adopted.
- ndsipa_pomu 6mo agoNot trying to downplay the importance of this, but the LTS versions aren't until the first point release, so 26.04.1 (typically six months or so after the release).
- electroly 6mo agoIs that true? I haven't heard that before. Do you have a link? Here's how they announced 24.04.0. It says LTS and doesn't mention anything about LTS coming in the .1 release: https://canonical.com/blog/canonical-releases-ubuntu-24-04-noble-numbat https://canonical.com/blog/canonical-releases-ubuntu-24-04-n...
- ndsipa_pomu 6mo agoI can't find any link, so I think I'm getting mixed up between what they consider LTS and when the upgrade tool starts prompting to upgrade. If you're on the 24.04 LTS, then you don't get prompted to upgrade until 26.04.1
- 999900000999 6mo agoDepends on your shop. As someone with a heavy QA/Dev Opps background I don't think we have enough details. Is it only ARM64 ? How many ARM64 PG DBs are running 96 cores? However... This is the most popular database in the world. Odds are this will effect a bunch of other lesser known applications.
- whilenot-dev 6mo agoPlease follow the complete thread: https://lore.kernel.org/lkml/xxbnmxqhx4ntc4ztztllbhnral2adogseot2bzu4g5eutxtgza@dzchaqremz32/ https://lore.kernel.org/lkml/xxbnmxqhx4ntc4ztztllbhnral2adog... > [...] used huge_pages=on - as that is the only sane thing to do with 10s to 100s of GB of shared memory [...] if I disable huge pages, I actually can reproduce the contention [...]
- 999900000999 6mo agoThank you for sharing. So it looks like an edge case, as usually you need huge pages at scale ??
- teekert 6mo agoI think most people on enterprise-y systems wait for (at least) 26.04.1, the window is 3 years (when on 24.04, which is supported until ~2029-04-30, it's 1 year when on 22.04) starting now, hardly anyone switches immediately.
- tankenmate 6mo agoNot necessarily; ``` $ grep PREEMPT_DYNAMIC /boot/config-$(uname -r) CONFIG_PREEMPT_DYNAMIC=y CONFIG_HAVE_PREEMPT_DYNAMIC=y CONFIG_HAVE_PREEMPT_DYNAMIC_CALL=y ``` if your kernel has CONFIG_PREEMPT_DYNAMIC then you can go back to the pre 7.0 default by adding preempt=none to your grub config. I haven't seen any plans by Ubuntu to drop CONFIG_PREEMPT_DYNAMIC from the default kernel config.
- tankenmate 6mo agoactually i just checked, yeah, ubuntu would have to add none back to the kernel and `CONFIG_PREEMPT_NONE=y` the config so that it can be selected at boot.