Re: Problem on AMD Athlon 64

[Bill R. Jr. <bru...@te...>]

On Wed, Jun 22, 2005 at 08:00:59PM +0200, Christian Lessig wrote:
> I want to use oprofile on and AMD Athlon 64 with Fedora Core 3:
> 
> processor       : 0
> vendor_id       : AuthenticAMD
> cpu family      : 15
> model           : 15
> model name      : AMD Athlon(tm) 64 Processor 3800+
> stepping        : 0
> cpu MHz         : 2412.387
> cache size      : 512 KB
> fdiv_bug        : no
> hlt_bug         : no
> 
> Unfortunately, there is only the timer event and no processor specific:
> 
> cat /dev/oprofile/cpu_type -> timer
> 
> Is there a patch or something so that I get the event counter?
 
Are you running 32-bit or 64-bit?  IIRC, Red Hat disabled some APIC functionality
on uniprocessor x86 kernels, because it caused problems with some laptops.  You
can verify this by looking at the kernel config:

	grep APIC /boot/config-*

If you are running a 64-bit kernel, then I don't know, perhaps it is the same
issue.

Try installing the smp kernel, or build your own custom kernel.

Regards,

	Bill Rugolsky