Re: [dpdk-dev] [PATCH 0/5] vhost: I-cache pressure optimizations

2019-05-17 Thread Maxime Coquelin
On 5/17/19 3:04 PM, David Marchand wrote: On Fri, May 17, 2019 at 2:23 PM Maxime Coquelin mailto:maxime.coque...@redhat.com>> wrote: Some OVS-DPDK PVP benchmarks show a performance drop when switching from DPDK v17.11 to v18.11. With the addition of packed ring layout support

Re: [dpdk-dev] [PATCH 0/5] vhost: I-cache pressure optimizations

2019-05-17 Thread David Marchand
On Fri, May 17, 2019 at 2:23 PM Maxime Coquelin wrote: > Some OVS-DPDK PVP benchmarks show a performance drop > when switching from DPDK v17.11 to v18.11. > > With the addition of packed ring layout support, > rte_vhost_enqueue_burst and rte_vhost_dequeue_burst > became very large, and only a par

[dpdk-dev] [PATCH 0/5] vhost: I-cache pressure optimizations

2019-05-17 Thread Maxime Coquelin
Some OVS-DPDK PVP benchmarks show a performance drop when switching from DPDK v17.11 to v18.11. With the addition of packed ring layout support, rte_vhost_enqueue_burst and rte_vhost_dequeue_burst became very large, and only a part of the instructions are executed (either packed or split ring used