On Tue, Sep 26, 2023 at 04:59:22PM +0200, Alessandro Baggi wrote:
> Hi list,
> running this python3 script:
>
> #!/usr/bin/env python3
> import psutil
>
> pids = psutil.pids()
> for i in pids:
> p = psutil.Process(i)
> with p.oneshot():
> print(str(i) + " " + p.name())
>
> The result start with:
>
> 0 swapper
> 1 init
> 536 smtpd
> 868 ksh
> ...
>
> This process does not appear in ps, top and htop.
$ ps -p 0
PID TT STAT TIME COMMAND
0 ?? DK 0:02.19 (swapper)
For top, you need to press S to show system processes. I don't use
htop, but I assume it has a similar capability to show system processes.
>
> How could be that there is a process with PID 0 before init?
> Probably I'm missing something about OpenBSD core.
>
> Can someone point me in the right direction?
>
See uvm_init(9):
The swapper process swaps in runnable processes that are
currently swapped out, if there is room.
> Thank you in advance.
>
> Alessandro.
--
Andreas (Kusalananda) Kähäri
Uppsala, Sweden
.
