Hi, On 2015-12-10, at 20:42, Denis Pearson <dennix.pear...@gmail.com> wrote: > I can probably find out a snapshot with the code at the time and extract a > diff, yes. I just don't know how it worths wasting the time when the problem > is not reproducible on the current 1.4.8 driver which will hopefully get into > -CURRENT (if it's not already there?).
per my last email, I do see the same issues with 1.4.8. This is with a single netperf TCP flow, no NIC parameter tuning and no RSS or PCBGROUP in the kernel. > This is why I suggested a transceiver change or replug first. I will test this next week. (However, the same testbed booted into Linux doesn't see these low netperf numbers.) It really smells like a TSO/LRO (= packet rate) issue. If I configure jumbograms, performance jumps up as expected. Lars
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