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Subject: Re: Linux 2.4.19ac3rc3 on IBM x330/x340 SMP - "ps" time skew
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: "Albert D. Cahalan" <acahalan@cs.uml.edu>
Cc: David Luyer <david_luyer@pacific.net.au>, linux-kernel@vger.kernel.org
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Date: 01 Aug 2002 01:37:17 +0100
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On Wed, 2002-07-31 at 20:14, Albert D. Cahalan wrote:
> Alan Cox writes:
> > On Wed, 2002-07-31 at 13:59, David Luyer wrote:
> 
> >>   printf("%d\n", sysconf(_SC_NPROCESSORS_CONF));
> >> }
> >> luyer@praxis8:~$ ./cpus
> >> 4
> >> luyer@praxis8:~$ grep 'processor        ' /proc/cpuinfo
> >> processor       : 0
> >> processor       : 1
> >
> > In which case I suggest you file a glibc bug. sysconf looks at the /proc
> > stuff as I understand it
> 
> First you blame ps. Then you blame libc. How about you
> place the fault right where it belongs?

ps is certainly buggy. HZ is 100. ps grovelling around in /proc is bogus
to say the least. That code wasn't exactly well written.

> Counting processors in /proc/cpuinfo is a joke of an ABI.
> 
> Add a proper ABI now, and userspace can transition to it
> over the next 4 years.

Which is what I've been talking to Ulrich about.

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