Messages in this thread | | | Date | Fri, 10 Nov 2000 17:46:29 -0800 | From | "H. Peter Anvin" <> | Subject | Re: sendmail fails to deliver mail with attachments in /var/spool/mqueue |
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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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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