Re: sendmail fails to deliver mail with attachments in /var/spool/mqueue

["H. Peter Anvin" <hpa@transmeta.com>]

Ralf Baechle wrote:
> 
> Jeff,
> 
> On Fri, Nov 10, 2000 at 03:29:20PM -0700, Jeff V. Merkey wrote:
> 
> > Well, here's what the sendmail folks **REAL** opinion of Linux is and
> > the way load average is calculated (senders name removed)
> >
> > [... sendmail person ...]
> >
> >  Ok, here's my blunt answer: Linux sucks.  Why does it have a load
> > > average of 10 if there are two processes running? Let's check the
> > > man page:
> > >
> > >             and the three load averages for the system.  The load
> > >             averages  are  the average number of process ready to
> > >             run during the last 1, 5 and 15 minutes.   This  line
> > >             is  just  like  the  output of uptime(1).
> > >
> > > So: Linux load average on these systems is broken.
> 
> Or the documentation is b0rken?  This is how the load figure is actually
> calculated:
> 
> /*
>  * Nr of active tasks - counted in fixed-point numbers
>  */
> static unsigned long count_active_tasks(void)
> {
>         struct task_struct *p;
>         unsigned long nr = 0;
> 
>         read_lock(&tasklist_lock);
>         for_each_task(p) {
>                 if ((p->state == TASK_RUNNING ||
>                      (p->state & TASK_UNINTERRUPTIBLE)))
>                         nr += FIXED_1;
>         }
>         read_unlock(&tasklist_lock);
>         return nr;
> }
> 

Yes, the documentation is broken.  Linus did in fact implement this
change because it made most daemons behave significantly better.  This
ought to include sendmail; it's just that on modern systems the numbers
get a little too high for it.

	-hpa

-- 
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
http://www.zytor.com/~hpa/puzzle.txt
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