[dpdk-dev] [PATCH v2] examples/vhost: fix perf regression

2016-07-21 Thread Tan, Jianfeng
Self-Nack this patch because the commit log needs change further. > -Original Message- > From: Tan, Jianfeng > Sent: Thursday, July 21, 2016 8:24 AM > To: dev at dpdk.org > Cc: yuanhan.liu at linux.intel.com; Wang, Zhihong; Xu, Qian Q; Tan, Jianfeng > Subject: [PATCH v2] examples/vhost:

[dpdk-dev] [PATCH v2] examples/vhost: fix perf regression

2016-07-21 Thread Jianfeng Tan
We find significant perfermance drop introduced by below commit, when vhost example is started with --mergeable 0 and inside vm, kernel virtio-net driver is used to do ip based forwarding. The root cause is that below commit adds support for VIRTIO_NET_F_GUEST_TSO4 and VIRTIO_NET_F_GUEST_TSO6,