stable 10GBE under 3.4.2 or 3.5.0-rc2

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Hi list,

i've still problems with stable network speed under recent kernels. With 3.0.32 i get stable 9.90 Gbit/s in both directions. With 3.4.2 or 3.5.0-rc2 it drops sometimes down to around 1 Gbit/s. Sadly i've no idea when this happen? It works sometimes for minutes at 9.9Gbit/s and then suddently only with 3-4Gbit/s or even 1Gbit/s using recent kernels.

I'm using various tunings recommanded by intel (Improving Performance) => http://downloadmirror.intel.com/5874/eng/README.txt

Has anybody a hint for me or additional settings intel does not mention?

Stefan
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