On Tue, Mar 23, 2021 at 10:02 AM Maxime Coquelin <maxime.coque...@redhat.com> wrote: > > As done for Virtio PMD, this series improves cache utilization > of the vhost_virtqueue struct by removing unused field, > make the live-migration cache dynamically allocated at > live-migration setup time and by moving fields > around so that hot fields are on the first cachelines. > > With this series, The struct vhost_virtqueue size goes > from 832B (13 cachelines) down to 320B (5 cachelines). > > With this series and the virtio one, I measure a gain > of up to 8% in IO loop micro-benchmark with packed > ring, and 5% with split ring. > > I don't have a setup at hand to run PVP testing, but > it might be interresting to get the numbers as I > suspect the cache pressure is higher in this test as > in real use-cases. > > Changes in v4: > ============== > - Fix missing changes to boolean (Chenbo) >
For the series, Reviewed-by: David Marchand <david.march...@redhat.com> Merci ! -- David Marchand
