Spyke
lemmy.zip

You really shouldn't do that. You risk leaving behind children and locks

22

That's why you should ask nicely first with kill -SIGHUP
Then if that doesn't work you can clean up the murder scene later.

1
systemglitchreply
lemmy.world

I feel like it's easy enough to kill on windoes as well. Windows is down to about once every two years where it completely hangs.

8

I haven't had a issue with Windows in at least 8 years. Admittedly I primarily use Linux but still. It isn't the unstable mess people here thing it is. It isn't private in the least but that's a different story.

11
lemmy.ml

Tbf, thanks to X11 Linux isn't safe from stuff like that.

When I use my VR glasses, Steam sometimes creates an uncloseable X window that isn't attached to any process. I don't think even killing XWayland gets rid of it.

47
fallingcatsreply
discuss.tchncs.de

On Plasma Desktop, pressing Ctrl+Alt+ESC kills anything you click on next, instantly. There is truly nothing you can't kill that way, even the desktop itself.

44
flying_sheepreply
lemmy.ml

Don't think I haven't tried that.

I also tried the debug menu, xkill using the window ID, … it's immortal.

8

I've run into this, seems like steam VR can't relaunch properly unless you close till that dead window with a reboot.

5
lemmy.ml

I'm not sure what this comic is trying to say but in my recent experience a single misbehaving website can still consume all available swap at which point Linux will sometimes completely lock up for many minutes before the out-of-memory killer decides what to kill - and then sometimes it still kills the desktop environment instead of the browser.

(I do know how to use oom_adj; I'm talking about the default configuration on popular desktop distros.)

31

Yeah, OOM not being aggressive enough (i.e. not triggering at all) is an age old issue. There's earlyoom or nohang for this, further ressources in the description.

6
QuazarOmegareply
lemy.lol

Real, happened too many times to me. What's that about configuring the OOM, can you give it priorities?

2
Arthur Bessereply
lemmy.ml

The canonical documentation is https://www.kernel.org/doc/Documentation/filesystems/proc.rst (ctrl-f oom) but if you search a bit you'll find various guides that might be easier to digest.

https://www.baeldung.com/linux/memory-overcommitment-oom-killer looks like an informative recent article on the subject, and reminds me that my knowledge is a bit outdated. (TIL about the choom(1) command which was added to util-linux in 2018 as an alternative to manipulating things in /proc directly...)

https://dev.to/rrampage/surviving-the-linux-oom-killer-2ki9 from 2018 might also be worth reading.

How to make your adjustments persist for a given desktop application is left as an exercise to the reader :)

4

Linux is slow at killing apps when you run out of memory because it was designed to also run on low spec hardware even if very slowly (making the ui totally unrensposnive) due to swapping.

This comic is about the kill command, how Linux kernel is handling force stopping apps vs (old?) Windows when if App frozed it was hard to close it. Now with modern apps and hardware you very rarely see that as most apps are designed to have asynchronous logic that is correctly handled, but it's still more or less relevant.

0

I recently had some processes lock up on Linux, and after searching what the "D" symbol in ps aux was (Uninterruptable sleep), i found this little line:

The only non-sophisticated way to get rid of them is to reboot the system

18

$ kill -l

 1) SIGHUP	 2) SIGINT	 3) SIGQUIT	 4) SIGILL	 5) SIGTRAP
 6) SIGABRT	 7) SIGBUS	 8) SIGFPE	 9) SIGKILL	10) SIGUSR1
11) SIGSEGV	12) SIGUSR2	13) SIGPIPE	14) SIGALRM	15) SIGTERM
16) SIGSTKFLT	17) SIGCHLD	18) SIGCONT	19) SIGSTOP	20) SIGTSTP
21) SIGTTIN	22) SIGTTOU	23) SIGURG	24) SIGXCPU	25) SIGXFSZ
26) SIGVTALRM	27) SIGPROF	28) SIGWINCH	29) SIGIO	30) SIGPWR
31) SIGSYS	34) SIGRTMIN	35) SIGRTMIN+1	36) SIGRTMIN+2	37) SIGRTMIN+3
38) SIGRTMIN+4	39) SIGRTMIN+5	40) SIGRTMIN+6	41) SIGRTMIN+7	42) SIGRTMIN+8
43) SIGRTMIN+9	44) SIGRTMIN+10	45) SIGRTMIN+11	46) SIGRTMIN+12	47) SIGRTMIN+13
48) SIGRTMIN+14	49) SIGRTMIN+15	50) SIGRTMAX-14	51) SIGRTMAX-13	52) SIGRTMAX-12
53) SIGRTMAX-11	54) SIGRTMAX-10	55) SIGRTMAX-9	56) SIGRTMAX-8	57) SIGRTMAX-7
58) SIGRTMAX-6	59) SIGRTMAX-5	60) SIGRTMAX-4	61) SIGRTMAX-3	62) SIGRTMAX-2
63) SIGRTMAX-1	64) SIGRTMAX
9
mvirts
lemmy.world

Imho desktop Linux is usually set up where a single bad app can lock up the whole system. This is not every Linux system, but I run across it more than I would like. I believe part of this is an optimistic approach to memory management which makes the system run better overall most of the time.

Windows seems slow as hell most of the time, but killing a process seems to work reliably (not clicking on the hung app takeover UI, using task kill or task manager)

I don't understand these memes about killing processes in Linux vs Windows.

7

The killing process on Windows used to work better. Since about Windows 8 it's not been quite the same.

4
lemm.ee

Quite often double click on the close button will kill a hung app on Windows. Not Al the time, maybe 70%.

7
kn0wmad1creply
programming.dev

There's an old addage when working with any Microsoft product:

"Wait longer"

In other words, your first click was probably doing its thing. You just needed to wait a little longer to see it work.

11

Good one! I'm literally dealing with this right now on a server. Turns out you're expected to deal with long running processes that spawn too many threads yourself, or else....

1

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