On Tue, Sep 26, 2023 at 06:12:20PM +0200, Alessandro Baggi wrote: > > > Il 26/09/23 17:30, Claudio Jeker ha scritto: > > On Tue, Sep 26, 2023 at 05:13:46PM +0200, Andreas Kähäri wrote: > > > 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. > > > > > > > ... and this is a lie. The swapper process does nothing. > > > > Ok, but why it is running?
Because it is the main() thread and nobody cleaned up that mess. -- :wq Claudio
