Subject: Re: Jerky system behavior.
To: Wolfgang Solfrank <>
From: Richard Rauch <>
List: port-amd64
Date: 03/04/2005 13:08:09
On Fri, Mar 04, 2005 at 05:46:17PM +0100, Wolfgang Solfrank wrote:
> Hi,
> >About August or so of last year, I upgraded from one -current to
> >another on my AMD64 box and suddenly started seeing a jerkiness to the
> >system.  Others reported it and I figured that it was a short-lived
> >kernel issue.  I recently did a new CVS update and built a fresh
> >kernel.  The problem is still there.
> >
> >(I only recall AMD64 people remarking about it, so I assume that
> >it's AMD64-specific.)
> Hmm, since I see this on an i386 box with an MPACPI kernel, too, I currently
> suspect the ACPI interpreter taking too much time.  Investigating this
> further is somewhere on my todo list, but didn't make it to the top yet ;-(.

I see this even without MPACPI enabled:

$ grep -i mpacpi socrates
#options        MPACPI
#options        MPACPI_SCANPCI          # MPBIOS configures PCI roots

(Yes.  Flying in the face of convention and stirring up great tides
of controversy, no doubt, I use lower-cased kernel config files.

  "I probably don't know what I'm talking about."