Why does start_new_thread() create an extra process under Linux?

[Erno Kuusela]

Jon Perez <jbperez808 at wahoo.com> writes:

> Does this the fact that NPTL threads are 'just one process' mean they
> are not created using clone()?  Are NPTL threads not scheduled by
> the kernel?

they are just hidden from the /proc directory listing. 

(erno at fabulous) /home.b/erno % ls -l /proc/`pidof firefox-bin`/task
total 0
dr-xr-xr-x    3 erno     erno            0 Jul 30 17:56 28319
dr-xr-xr-x    3 erno     erno            0 Jul 30 17:56 31596
dr-xr-xr-x    3 erno     erno            0 Jul 30 17:56 31597
dr-xr-xr-x    3 erno     erno            0 Jul 30 17:56 31599
(erno at fabulous) /home.b/erno % ls -l /proc/28319 | wc -l           
     16
(erno at fabulous) /home.b/erno % ls -l /proc|grep -c 28319
0

  -- erno