On Fri, 25 Aug 2017 08:24:49 -0700, Jacob Keller wrote: > Under some circumstances, such as with many stacked devices, it is > possible that dev_hard_start_xmit will bundle many packets together, and > mark them all with xmit_more.
Excuse my ignorance but what are those stacked devices? Could they perhaps be fixed somehow? My intuition was that long xmit_more sequences can only happen if NIC and/or BQL are back pressuring, and therefore we shouldn't be seeing a long xmit_more "train" arriving at an empty device ring...