On Mon, 25 Sep 2017 14:55:36 -0700 Alexander Duyck <alexander.du...@gmail.com> wrote:
> From: Alexander Duyck <alexander.h.du...@intel.com> > > The following change is meant to update the adaptive ITR algorithm to > better support the needs of the network. Specifically with this change what > I have done is make it so that our ITR algorithm will try to prevent either > starving a socket buffer for memory in the case of Tx, or overruing an Rx > socket buffer on receive. > > In addition a side effect of the calculations used is that we should > function better with new features such as XDP which can handle small > packets at high rates without needing to lock us into NAPI polling mode. > > Signed-off-by: Alexander Duyck <alexander.h.du...@intel.com> > --- > > So I am putting this out to a wider distribution list than normal for a > patch like this in order to get feedback on if there are any areas I may > have overlooked. With this patch is should address many of the performance > limitations seen with pktgen and XDP in terms of workloads that the old > adaptive scheme wasn't handling. Thanks a lot Alex! I've tested the patch with XDP redirect (map), and the issue I reported in [1] is solved with this patch. [1] Subject: "XDP redirect measurements, gotchas and tracepoints" http://lkml.kernel.org/r/20170821212506.1cb0d...@redhat.com -- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat LinkedIn: http://www.linkedin.com/in/brouer
