[dpdk-dev] DMAR errors when running testpmd

Burakov, Anatoly anatoly.burakov at intel.com
Wed May 7 17:24:49 CEST 2014


Hi Tomasz,

> You guessed right...it doesn't
> "show port stats all" always shows zeros.

As I said earlier, such errors are usually related to errors in boot parameters, but your kernel cmdline looks perfectly fine, so unless there's something really odd happening, I can't see this being at fault.

Another (rather unlikely, but I'll still mention it just in case) reason could be that you're using igb_uio module that is really old (I don't remember when igb_uio gained IOMMU support, probably 1.4.x), which is why I asked about DPDK version, but since you're using 1.6.0 you should be fine.

Other than that, I'm afraid I can't think of any reasons why this could be happening. Did you try this on another board with the same OS? 

Best regards,
Anatoly Burakov
DPDK SW Engineer





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