Re: [PATCH] perfcounters: IRQ and NMI support on AMD CPUs

[Ingo Molnar]

* Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> On Fri, 2009-03-06 at 00:26 +0530, Jaswinder Singh Rajput wrote:
> 
> > But kerneltop is still not working and I am not getting any NMI Interrupts.
> 
> Does the below work for you?
> 
> The BKGD suggests its 48 for all existing machines (it 
> certainly is for mine).

Yeah, this did the trick on AMD/Barcelona!

NMI:      11310      14932      11729      12705      11207      
13454      13378      10714      14526      11986      10973      
10765      12669      12093      13430       9661   Non-maskable 
interrupts

KernelTop works just fine:

------------------------------------------------------------------------------
 KernelTop:    1019 irqs/sec  kernel:27.9% [NMI, 1000000 CPU 
cycles],  (all, 16 CPUs)
------------------------------------------------------------------------------

             events         RIP          kernel function
  ______     ______   ________________   _______________

            5260.00 - ffffffff8037e420 : clear_page_c
            1065.00 - ffffffff805811a0 : page_fault
             699.00 - ffffffff8037e690 : copy_user_generic_string!
             669.00 - ffffffff80294ed8 : get_page_from_freelist
             575.00 - ffffffff804cd033 : acpi_pm_read
             551.00 - ffffffff8025fd1b : generic_exec_single
             416.00 - ffffffff80580c9c : _spin_lock
             413.00 - ffffffff802a32ad : unmap_vmas
             392.00 - ffffffff80580fc2 : _spin_lock_irqsave

Thanks!

	Ingo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/