Hi, On 2018-7-5, at 17:47, n...@freebsd.org wrote: > Set hw.cxgbe.fl_pktshift=0 in loader.conf to stop the chip from doing > this. See cxgbe(4) for details on the knob. It's a historic > optimization that doesn't seem to matter on modern CPUs, so the driver > default should probably be 0 instead of 2.
thanks, I must have missed this in the man page. Looking at this in detail now, I wonder if there are other loader settings that should be set for netmap use, such as hw.cxgbe.buffer_packing=0 and/or hw.cxgbe.allow_mbufs_in_cluster=0? Thanks, Lars
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