slow unless CPU is in use, part 2

[John Baldwin]

On Thursday 08 March 2007 03:27:09 am Keith Pitcher wrote:
> A followup and more information about the system being slow unless the
> CPU is in use, then things work well.
> 
> I tried to boot from the latest amd64 snapshot, to see if it was a 6.2
> to 7.0 upgrade issue but the laptop doesn't seem to like it in that it
> core dumps almost instantly after the loader starts and I can't see what
> scrolls by. I did cvsup today and recompiled everything, but I'm still
> having the issue of dragging (Up to 5 seconds to switch ttys if nothing
> is running, or for a character to display after being entered).
> 
> I haven't narrowed down what level of CPU usage makes things fast.
> Things that I know do the trick are mpg123, or compiling a port..
> 
> As the hardware worked fine under 6.2 for a week, and I've been using
> visual studio under vista without issues (Other than Vista doesn't like
> parts of VS 05 that is...), I don't believe there's an issue of an
> overheating CPU or other hardware issues.

Try sysctl machdep.cpu_idle_hlt=0.  It will make yuor machine run warmer 
though.

> pci0: <ACPI PCI bus> on pcib0
> pcib0: HT Bridge at 0:14:0 has non-default MSI window 0x602000a
> pcib0: HT Bridge at 0:16:1 has non-default MSI window 0x0

I would really like to see the output of 'pciconf -lc' on this machine.

-- 
John Baldwin