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SubjectRe: Got iperf regression while intel_iommu is on, how to cut the cost of cache flushing
Thanks, hope it could kill the most pain of the regression. I will
try them and report the result.


> You might hit a known problem for some 10Gb links.
> 3.12-rc6 has the fixes already, and stable has some pending backports :
> commit 95bd09eb27507691520d39ee1044d6ad831c1168
> tcp: TSO packets automatic sizing
> commit c9eeec26e32e087359160406f96e0949b3cc6f10
> tcp: TSQ can use a dynamic limit
> Please check that current 3.12-rc6 is OK ?

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