> -----Original Message----- > From: Maxime Coquelin <maxime.coque...@redhat.com> > Sent: Tuesday, March 23, 2021 5:02 PM > To: dev@dpdk.org; Xia, Chenbo <chenbo....@intel.com>; amore...@redhat.com; > david.march...@redhat.com; olivier.m...@6wind.com; bnem...@redhat.com > Cc: Maxime Coquelin <maxime.coque...@redhat.com> > Subject: [PATCH v4 0/3] vhost: make virtqueue cache-friendly > > 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. > > Maxime Coquelin (3): > vhost: remove unused Vhost virtqueue field > vhost: move dirty logging cache out of the virtqueue > vhost: optimize vhost virtqueue struct > > lib/librte_vhost/vhost.c | 21 +++++++++---- > lib/librte_vhost/vhost.h | 56 +++++++++++++++++------------------ > lib/librte_vhost/vhost_user.c | 44 +++++++++++++++++++-------- > lib/librte_vhost/virtio_net.c | 12 ++++---- > 4 files changed, 82 insertions(+), 51 deletions(-) > > -- > 2.30.2
Series applied to next-virtio/main, Thanks!
