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

2016-07-20 Thread Tan, Jianfeng
On 7/20/2016 2:13 PM, Yuanhan Liu wrote: > On Wed, Jul 20, 2016 at 01:50:34PM +0800, Tan, Jianfeng wrote: >> >> On 7/20/2016 12:38 PM, Yuanhan Liu wrote: >>> On Tue, Jul 19, 2016 at 01:53:11PM +, Jianfeng Tan wrote: We find significant perfermance drop introduced by below commit, wh

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

2016-07-20 Thread Yuanhan Liu
On Wed, Jul 20, 2016 at 01:50:34PM +0800, Tan, Jianfeng wrote: > > > On 7/20/2016 12:38 PM, Yuanhan Liu wrote: > >On Tue, Jul 19, 2016 at 01:53:11PM +, Jianfeng Tan wrote: > >>We find significant perfermance drop introduced by below commit, > >>when vhost example is started with --mergeable 0

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

2016-07-20 Thread Tan, Jianfeng
On 7/20/2016 12:38 PM, Yuanhan Liu wrote: > On Tue, Jul 19, 2016 at 01:53:11PM +, Jianfeng Tan wrote: >> 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 forwa

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

2016-07-20 Thread Yuanhan Liu
On Tue, Jul 19, 2016 at 01:53:11PM +, Jianfeng Tan wrote: > 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 a

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

2016-07-20 Thread Yuanhan Liu
On Wed, Jul 20, 2016 at 10:44:13AM +0800, Tan, Jianfeng wrote: > Hi Yuanhan, > > On 7/20/2016 9:44 AM, Yuanhan Liu wrote: > >On Tue, Jul 19, 2016 at 01:53:11PM +, Jianfeng Tan wrote: > >>We find significant perfermance drop introduced by below commit, > >>when vhost example is started with --m

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

2016-07-20 Thread Tan, Jianfeng
Hi Yuanhan, On 7/20/2016 9:44 AM, Yuanhan Liu wrote: > On Tue, Jul 19, 2016 at 01:53:11PM +, Jianfeng Tan wrote: >> 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 b

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

2016-07-20 Thread Yuanhan Liu
On Tue, Jul 19, 2016 at 01:53:11PM +, Jianfeng Tan wrote: > 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 a

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

2016-07-20 Thread Xu, Qian Q
org Cc: yuanhan.liu at linux.intel.com; Wang, Zhihong ; Tan, Jianfeng Subject: [dpdk-dev] [PATCH] examples/vhost: fix perf regression 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

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

2016-07-20 Thread Xu, Qian Q
My comments below. -Original Message- From: dev [mailto:dev-boun...@dpdk.org] On Behalf Of Tan, Jianfeng Sent: Wednesday, July 20, 2016 10:44 AM To: Yuanhan Liu Cc: dev at dpdk.org; Wang, Zhihong Subject: Re: [dpdk-dev] [PATCH] examples/vhost: fix perf regression Hi Yuanhan, On 7/20

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

2016-07-19 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, and