Hi Tvrtko Sorry for the delay, real life and other obligations got in the way. On Thu, 8 Jun 2023 at 15:26, Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx> wrote: > On 21/04/2023 13:13, Emil Velikov wrote: > Are you okay if I just paste your very fine explanation verbatim, with > credits? > Yes, feel free to use as much of if as you see reasonable. > > I also had a brief look at 01/10, although I cannot find many > > references for the pid <> tguid mappings. Be that on the kernel side > > or userspace - do you have any links that I can educate myself? > > TGID or thread group leader. For single threaded userspace TGID equals > to PID, while for multi-threaded first thread TGID equals PID/TID, while > additional threads PID/TID does not equal TGID. Clear, as mud? :) My > POSIX book is misplaced somewhere having not consulted it years... :) > Ack. /me looks into actually buying one, perhaps Thanks Emil