ACPI based interrupt routing and new ACPI code ready for testing

[Sepherosa Ziehau]

On Fri, Mar 25, 2011 at 5:00 AM, Max Herrgard <herrgard at gmail.com> wrote:
> Matthew Dillon wrote:
>>
>> :However, it makes my graphics card (an ati 9200 agp) lose some speed. It
>> :usually gets ~1600 fps with glxgears and with 2) enabled it drops to ~20
>> :fps. From what I can see it gives no error about this problem.
>> :
>> ://Max
>>
>>     What about the rest of the system?  Run some simple cpu benchmarks.
>>     If those are slow also this could be an indication of an interrupt
>>     storm (and possibly even a SMI storm, similar to ruse39's issue).
>
> Do you have a suggestion for such a cpu benchmark?
>
> vmstat -i looks okay:
>
> # vmstat -i
> interrupt                                  total       rate
> clk                                      1500666        278
> sio0                                           0          0
> ppc0                                           1          0
> acpi0/vge0/uhci0/uhci1                     29597          5

This interrupt sharing may caused by interrupt routing in ACPI code.
What's the vmstat -iv on both w/ and w/o ACPI interrupt routing?

> ral0/rl0/ehci0                            145586         27
> fwohci0/pcm0/rl1/atapci0/uhci2/uhci3       60096         11
> ata0                                          37          0
> ata1                                           0          0
> irq19                                         46          0
> irq21                                      63376         11
> swi_siopoll                                    0          0
> swi_cambio                                     0          0
> swi_vm                                         0          0
> swi_taskq/swi_mp_taskq                         0          0
> Total                                    1799405        333
>
>
> //Max
>



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