From: Marvin Liu <yong.liu@intel.com> To: maxime.coquelin@redhat.com, chenbo.xia@intel.com, zhihong.wang@intel.com Cc: dev@dpdk.org, Marvin Liu <yong.liu@intel.com> Subject: [dpdk-dev] [PATCH v3 0/5] vhost add vectorized data path Date: Fri, 9 Oct 2020 16:14:05 +0800 Message-ID: <20201009081410.63944-1-yong.liu@intel.com> (raw) In-Reply-To: <20200819032414.51430-2-yong.liu@intel.com> Packed ring format is imported since virtio spec 1.1. All descriptors are compacted into one single ring when packed ring format is on. It is straight forward that ring operations can be accelerated by utilizing SIMD instructions. This patch set will introduce vectorized data path in vhost library. If vectorized option is on, operations like descs check, descs writeback, address translation will be accelerated by SIMD instructions. On skylake server, it can bring 6% performance gain in loopback case and around 4% performance gain in PvP case. Vhost application can choose whether using vectorized acceleration, just like external buffer feature. If platform or ring format not support vectorized function, vhost will fallback to use default batch function. There will be no impact in current data path. v3: * rename vectorized datapath file * eliminate the impact when avx512 disabled * dynamically allocate memory regions structure * remove unlikely hint for in_order v2: * add vIOMMU support * add dequeue offloading * rebase code Marvin Liu (5): vhost: add vectorized data path vhost: reuse packed ring functions vhost: prepare memory regions addresses vhost: add packed ring vectorized dequeue vhost: add packed ring vectorized enqueue doc/guides/nics/vhost.rst | 5 + doc/guides/prog_guide/vhost_lib.rst | 12 + drivers/net/vhost/rte_eth_vhost.c | 17 +- lib/librte_vhost/meson.build | 16 ++ lib/librte_vhost/rte_vhost.h | 1 + lib/librte_vhost/socket.c | 5 + lib/librte_vhost/vhost.c | 11 + lib/librte_vhost/vhost.h | 239 +++++++++++++++++++ lib/librte_vhost/vhost_user.c | 26 +++ lib/librte_vhost/virtio_net.c | 258 ++++----------------- lib/librte_vhost/virtio_net_avx.c | 344 ++++++++++++++++++++++++++++ 11 files changed, 718 insertions(+), 216 deletions(-) create mode 100644 lib/librte_vhost/virtio_net_avx.c -- 2.17.1
next prev parent reply other threads:[~2020-10-09 8:20 UTC|newest] Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-08-19 3:24 [dpdk-dev] [PATCH v1 " Marvin Liu 2020-08-19 3:24 ` [dpdk-dev] [PATCH v1 1/5] vhost: " Marvin Liu 2020-09-21 6:48 ` [dpdk-dev] [PATCH v2 0/5] vhost " Marvin Liu 2020-09-21 6:48 ` [dpdk-dev] [PATCH v2 1/5] vhost: " Marvin Liu 2020-09-21 6:48 ` [dpdk-dev] [PATCH v2 2/5] vhost: reuse packed ring functions Marvin Liu 2020-09-21 6:48 ` [dpdk-dev] [PATCH v2 3/5] vhost: prepare memory regions addresses Marvin Liu 2020-10-06 15:06 ` Maxime Coquelin 2020-09-21 6:48 ` [dpdk-dev] [PATCH v2 4/5] vhost: add packed ring vectorized dequeue Marvin Liu 2020-10-06 14:59 ` Maxime Coquelin 2020-10-08 7:05 ` Liu, Yong 2020-10-06 15:18 ` Maxime Coquelin 2020-10-09 7:59 ` Liu, Yong 2020-09-21 6:48 ` [dpdk-dev] [PATCH v2 5/5] vhost: add packed ring vectorized enqueue Marvin Liu 2020-10-06 15:00 ` Maxime Coquelin 2020-10-08 7:09 ` Liu, Yong 2020-10-06 13:34 ` [dpdk-dev] [PATCH v2 0/5] vhost add vectorized data path Maxime Coquelin 2020-10-08 6:20 ` Liu, Yong 2020-10-09 8:14 ` Marvin Liu [this message] 2020-10-09 8:14 ` [dpdk-dev] [PATCH v3 1/5] vhost: " Marvin Liu 2020-10-09 8:14 ` [dpdk-dev] [PATCH v3 2/5] vhost: reuse packed ring functions Marvin Liu 2020-10-09 8:14 ` [dpdk-dev] [PATCH v3 3/5] vhost: prepare memory regions addresses Marvin Liu 2020-10-09 8:14 ` [dpdk-dev] [PATCH v3 4/5] vhost: add packed ring vectorized dequeue Marvin Liu 2020-10-09 8:14 ` [dpdk-dev] [PATCH v3 5/5] vhost: add packed ring vectorized enqueue Marvin Liu 2020-10-12 8:21 ` [dpdk-dev] [PATCH v3 0/5] vhost add vectorized data path Maxime Coquelin 2020-10-12 9:10 ` Liu, Yong 2020-10-12 9:57 ` Maxime Coquelin 2020-10-12 13:24 ` Liu, Yong 2020-10-15 15:28 ` Liu, Yong 2020-10-15 15:35 ` Maxime Coquelin 2020-08-19 3:24 ` [dpdk-dev] [PATCH v1 2/5] vhost: reuse packed ring functions Marvin Liu 2020-08-19 3:24 ` [dpdk-dev] [PATCH v1 3/5] vhost: prepare memory regions addresses Marvin Liu 2020-08-19 3:24 ` [dpdk-dev] [PATCH v1 4/5] vhost: add packed ring vectorized dequeue Marvin Liu 2020-09-18 13:44 ` Maxime Coquelin 2020-09-21 6:26 ` Liu, Yong 2020-09-21 7:47 ` Liu, Yong 2020-08-19 3:24 ` [dpdk-dev] [PATCH v1 5/5] vhost: add packed ring vectorized enqueue Marvin Liu
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20201009081410.63944-1-yong.liu@intel.com \ --to=yong.liu@intel.com \ --cc=chenbo.xia@intel.com \ --cc=dev@dpdk.org \ --cc=maxime.coquelin@redhat.com \ --cc=zhihong.wang@intel.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: link
DPDK patches and discussions This inbox may be cloned and mirrored by anyone: git clone --mirror https://inbox.dpdk.org/dev/0 dev/git/0.git # If you have public-inbox 1.1+ installed, you may # initialize and index your mirror using the following commands: public-inbox-init -V2 dev dev/ https://inbox.dpdk.org/dev \ dev@dpdk.org public-inbox-index dev Example config snippet for mirrors. Newsgroup available over NNTP: nntp://inbox.dpdk.org/inbox.dpdk.dev AGPL code for this site: git clone https://public-inbox.org/public-inbox.git