[Avila] Too many ethernet interrupts on Gateworks board

[Jay Lee]

Thanks for your reply. How can I replace gateworks 2.6.x kernel with 
kernel 2.6.18.4?

David Acker wrote:
> Jay Lee wrote:
>> I have GW2348-4 boards and using gateworks development kit to compile 
>> kernel. I'm experiencing exactly same problem of 2000-4000 interrupts 
>> per second. I've used kernel 2.4 and kernel 2.6 but the result was 
>> same. I've also updated madwifi driver to latest and tried on both 
>> 2.4 and 2.6 kernels but still had the same problem.
>>
>> I gave up the development software from gateworks and used snapgear 
>> 3.4.0 with Intel CSR 2.0. With this, I still noticed high interrupts 
>> however cpu utilisation was 0. I'm not sure if it has resolved the 
>> problem or cpu utilisation is being measured correctly. Moreover the 
>> default snapgear did not detect the onboard flash properly.
>>
>> Can anyone suggest me easy ways to solve this high cpu util / high 
>> interrupts problem. Is there any snapgear patch to detect the onboard 
>> flash?
>>
>
> The problem is the intel ethernet driver.  It does some kind of 
> periodic  interrupt that occurs every often that the driver uses to 
> trigger some kind of polling.  I got rid of that driver and went with 
> a real open source driver, http://www.hohnstaedt.de/ixp_npe/ .  I am 
> running 0.2.1 with 2.6.18.4, although 0.3.1 went through a review on 
> the ARM list not too long ago.  I believe that this driver will go 
> into the mainline in the near future.  There may be a way to configure 
> the intel driver to fix this but I have not tried it.  Personally, I 
> find the hohnstaedt driver much easier to follow.
> -Ack
>
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