Re: [PATCH] Staircase scheduler v7.4

Willy Tarreau
2004-06-25T19:16:05Z

Hi Michael,

On Fri, Jun 25, 2004 at 08:44:22PM +0200, Michael Buesch wrote:

> I don't know what the file wchan is good for, but here is
> it's output:
> mb@lfs:/proc/11000> cat wchan
> sys_wait4

I bet the process is waiting for a SIGCHLD from a previously forked
process. Con, would it be possible that under some circumstances,
a process does not receive a SIGCHLD anymore, eg if the child runs
shorter than a full timeslice or something like that ? In autoconf
scripts, there are lots of very short operations that might trigger
such unique cases.

Cheers,
Willy