• 0 Posts
  • 32 Comments
Joined 2 years ago
cake
Cake day: June 17th, 2023

help-circle
  • Somewhat recently I caused a failed kernel update by accident:

    Ran system update in tmux session (local session on desktop). But problem was that tmux itself got also updated, which crashed the tmux session and as a result crashed the kernel update. Only realized it upon the following reboot (which no longer worked).

    Your described solution re “live ISO, chroot, run system update once more, reboot” was also what got me out of that situation. So certainly something worth learning for “general troubleshooting” purposes re system updates.



  • So AFAIU, if a company had:

    • frontend
    • backend
    • desktop apps
    • mobile apps

    … and all those apps would share some smaller, self developed libraries / components with the frontend and/or backend, then the “no submodules, but one big monorepo” approach would be to just put all those apps into that monorepo as well and simply reference whatever shared code there might be via relative paths, effectively tracking “latest”, or maybe some distinct “stable version folders” (not sure if that’s a thing).

    Anyway, certainly never thought to go that far, because having an app that’s “mostly independant” from a codebase perspective be in it’s own repo seemed beneficial. But yeah, it seems to me this is a matter of scale and at some point the cost of not having everything in a monorepo would become too great.

    Thanks!




  • Regarding tauri: One and a half years ago I looked into it as a potential alternative to using electron.

    Back then I had to decide against it for my use case, because when the goal is that it’s a cross platform app, then one has to make sure that whatever “webview version” is used on all target OS, they all have to support the features one needs re one’s own app codebase. Back then I needed some “offscreen canvas” feature that chromium supported (hence electron), but which webkit2gtk (used on Linux) didn’t at the time.

    https://tauri.app/v1/references/webview-versions/

    So it’s not always easy to give a clear recommendation on using tauri over electron. One really has to get somewhat clear on what kind of “webview requirements” the resp. app will have.

    But I do hope this will (or maybe already is) less of an issue in upcoming years (things are moving fast after all).


  • TBH, I don’t know much about school systems of other countries. Just reading horror stories of the US education system re student loans at times. So can’t really argue that point with you.

    But I’m not sure what made you think I’m blaming the children. Not once did I make a remark that would suggest that.

    So let me be clear: Children, while they are still considered children, really can’t be blamed. As they become adolescents, then slowly, but ever increasingly more, their own viewpoints and actions will have an impact on how their education is going (esp. true if a child goes a lot further in education than their parents ever did).

    Rather there’s some blame to be put on the social environment and the child’s parents. E.g. it’s not the fault of the education system if child’s parents are divorcing while the kid is in Kindergarden and the child then has to switch schools multiple times, not because the child is problematic or because the education system is pushing the child around. No, chances are most of the blame is on the parents then.


  • Maybe I have bit too positive outlook on this, yeah.

    But that article also emphasizes a lot (first half) that a child’s environment simply matters a lot. Esp. having parents that have higher education themselves and are there for the child to support it regarding learning outside of school can make a big difference. And this isn’t just about the first couple years before elementary school (what article says re “Wortschatz”). Esp. the ongoing school period thereafter. E.g. “Does it make a difference in a child’s household if parents can speak English when trying to learn English?” - of course it does!

    The point on “Brennpunktschulen” is also very environment driven. I’m not saying that “Lehrermangel” isn’t real, or that having this system of three school paths starting from 5th grade is the best invention ever.

    But one can’t put all the blame on the school system, when “what happens outside of school” has such a big impact on a child.


  • Your last paragraph seems misinformed.

    https://en.m.wikipedia.org/wiki/Gymnasium_(Germany)

    State-funded schools (a big majority) are tuition-free, as foreseen by the respective laws, even often on constitutional level. Segregation of students by parent wealth or income is looked down upon, to the point of being an exception to the constitutionally guaranteed freedom to have private schools (Article 7 section 4 of the German constitution, Sondierungsverbot). Of the private gymnasia, the vast majority is run by the Catholic Church on very low tuition fees (which is more easy as by Concordat, the Church receives a high percentage of the amount of money the State need not spend for a pupil in a Church-school); fees for schools who need to earn money by teaching are higher. Schools with fees generally offer scholarships.

    In 2005, the German government spent €5,400 per student for those attending public gymnasium. This is less than what was spent on a student attending Hauptschule, but more than was spent on those attending Realschule.[22] Some Hauptschule and Gesamtschule students have special needs requiring extra help, so those schools cannot operate as cost-effectively as gymnasia.

    I myself went to a public Gymnasium and can still remember that among my classmates we had a wide range re “parent income and status”.

    Literally from:

    • ‘single parent that barely gets by’
    • ‘teacher parents’
    • attorneys / judges / cardiologist / engineers / etc.
    • CEO parent of an international company

    I literally:

    • went through elementary school
    • got a recommendation for going to a Gymnasium at end of 4th year based on my performance
    • picked one out of the available Gymnasiums in my area (within what was doable by bus on a daily basis)
    • then went there

    And even if you go to “Hauptschule”, that’s not the end of education. One can still do what’s called “M-Zweig”, which gets you the equivalent degree of “Realschule”. Then one can go to “FOS”, which gets you a degree close to that of Gymnasium. It at least allows for going to a “university of applied sciences”, which is less geared towards academics and more towards industry. Still can get you your masters degree or if a doctors degree if one really wants that and partners with an “academic university” (AFAIR).

    Some children simply take that other route. Still, it comes down to ability of the child. Of course, having a non-supportive environment that doesn’t believe in achild can make things harder on it. Some children might actually be motivated by “potentially escaping that”.

    But to say this education system is a “class filter” is just wrong.


  • I went through setting up netdata for a sraging (in progression for a production) server not too long ago.

    The netdata docs were quite clear on that fact that the default configuration is a “showcase configuration”, not a “production ready configuration”!

    It’s really meant to show off all features to new users, who then can pick what they actually want. Great thing about disabling unimportant things is that one gets a lot more “history” for the same amount of storage need, cause there are simply less data points to track. Similar with adjusting the rate which it takes data points. For instance, going down from default 1s internal to 2s basically halfs the CPU requirement, even more so if one also disables the machine learning stuff.

    The one thing I have to admit though is that “optimizing netdata configs” really isn’t that quickly done. There’s just a lot of stuff it provides, lots of docs reading to be done until one roughly gets a feel for configuring it (i.e. knowing what all could be disabled and how much of a difference it actually makes). Of course, there’s always a potential need for optimizations later on when one sees the actual server load in prod.


  • bellsDoSing@lemm.eetoLinux@lemmy.mlKDE 6 FOR ARCH LINUX IS HEREEEEEEE
    link
    fedilink
    arrow-up
    2
    arrow-down
    1
    ·
    edit-2
    10 months ago

    Same here! Been using manjaro for more than 5 years by now on all my dev machines and I really like not being overrun by updates.

    Once you form the habit of checking latest “stable update” forum thread (the eqivalent of checking the arch frontpage before an upgrade) and check for potential “manual interventions” (if any), then it gives you suprisingly good stability. But it’s still rolling release and “pretty current”.

    And stability simply becomes more of a factor once your metaphorical “plate” becomes choke full and the last thing you want from your underlying OS is to act up on its own due to an update.





  • Just looked it up a bit: https://microsoft.github.io/monaco-editor/

    AFAIU, monaco is just about the editor part. So if an electron application doesn’t need an editor, this won’t really help to improve performance.

    Having gone through learning and developing with electron myself, this (and the referenced links) was a very helpful resource: https://www.electronjs.org/docs/latest/tutorial/performance

    In essence: “measure, measure, measure”.

    Then optimize what actually needs optimizing. There’s no easy, generic answer on how to get a given electron app to “appear performant”. I say “appear”, because even vscode leverages various strategies to appear more performant than it might actually be in certain scenarios. I’m not saying this to bash vscode, but because techniques like “lazy loading” are simply a tool in the toolbox called “performance tuning”.

    BTW: Not even using C++ will guarantee a performant application in the end, if the application topic itself is complex enough (e.g. video editors, DAWs, etc.) and one doesn’t pay attention to performance during development.

    All it takes is to let a bunch of somewhat CPU intensive procedures pile up in an application and at some point it will feel sluggish in certain scenarios. Only way out of that is to measure where the actual bottlenecks are and then think about how one could get away with doing less (or doing less while a bunch of other things are going on and then do it when there’s more of an “idle” time), then make resp. changes to the codebase.


  • Yeah, that browser zoom. And I too used / use Firefox. I’m not saying these kind of sites are common, but nevertheless I’ve encountered them occasionally. Back then, the most pragmatic workaround was to use desktop zooming of Xfce.

    My intention on the previous comment was simply to give some examples of desktop zooming that go beyond the typical accessibility viewpoint (e.g. vision impairment).



  • Yeah, AFAIR, the issue of “windows messing up grub” could happen when it’s installed on the same disk (e.g. on a laptop with one disk). Something about it overwriting the “MBR sector”. At least that was a problem back before UEFI.

    I too have been dual booting Windows 10 and Linux for many years now, each having their own physical disk, Linux one always being first in boot order. Not once did a Windows 10 update mess up grub for me with this setup.


  • Not the same as “on demand zooming”, which let’s one stick with a high, native resolution, but zoom in when required (e.g. websites with small text that can’t be zoomed via browser’s font size increase; e.g. referencing some UI stuff during UI design, without having to take a screenshot and pasting + zooming it in e.g. GIMP).


  • You didn’t mention how big those volumes are and how frequently the data changes.

    Assuming it’s not that much data:

    • use tar to archive each volume first, while using proper options to preserve permissions and whatever else is important for your usecase
    • use restic to backup those archives
    • use a proper pruning strategy to not let your backups get too big:
      • I’m not that familiar with restic, but maybe you can backup those archives separately and apply a more aggressive pruning strategy just for them
      • simply might be needed, cause deduplication (AFAIK) might not be that great with backing up archives
      • but maybe if the volume data and the resulting archive doesn’t change that often, deduplication would be sufficient even with a not so aggressive pruning strategy