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GET /api/patches/126795/?format=api
{ "id": 126795, "url": "http://patches.dpdk.org/api/patches/126795/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/patch/20230509060347.1237884-16-zhirun.yan@intel.com/", "project": { "id": 1, "url": "http://patches.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<20230509060347.1237884-16-zhirun.yan@intel.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20230509060347.1237884-16-zhirun.yan@intel.com", "date": "2023-05-09T06:03:47", "name": "[v6,15/15] doc: update multicore dispatch model in graph guides", "commit_ref": null, "pull_url": null, "state": "changes-requested", "archived": true, "hash": "a8855e2b3b370968903059406487c07db72b7810", "submitter": { "id": 1154, "url": "http://patches.dpdk.org/api/people/1154/?format=api", "name": "Yan, Zhirun", "email": "zhirun.yan@intel.com" }, "delegate": { "id": 1, "url": "http://patches.dpdk.org/api/users/1/?format=api", "username": "tmonjalo", "first_name": "Thomas", "last_name": "Monjalon", "email": "thomas@monjalon.net" }, "mbox": "http://patches.dpdk.org/project/dpdk/patch/20230509060347.1237884-16-zhirun.yan@intel.com/mbox/", "series": [ { "id": 27966, "url": "http://patches.dpdk.org/api/series/27966/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=27966", "date": "2023-05-09T06:03:32", "name": "graph enhancement for multi-core dispatch", "version": 6, "mbox": "http://patches.dpdk.org/series/27966/mbox/" } ], "comments": "http://patches.dpdk.org/api/patches/126795/comments/", "check": "success", "checks": "http://patches.dpdk.org/api/patches/126795/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@inbox.dpdk.org", "Delivered-To": "patchwork@inbox.dpdk.org", "Received": [ "from mails.dpdk.org (mails.dpdk.org [217.70.189.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id 4914642AA0;\n\tTue, 9 May 2023 08:05:54 +0200 (CEST)", "from mails.dpdk.org (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id 7670642D33;\n\tTue, 9 May 2023 08:04:42 +0200 (CEST)", "from mga09.intel.com (mga09.intel.com [134.134.136.24])\n by mails.dpdk.org (Postfix) with ESMTP id C989042D33\n for <dev@dpdk.org>; Tue, 9 May 2023 08:04:40 +0200 (CEST)", "from fmsmga007.fm.intel.com ([10.253.24.52])\n by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384;\n 08 May 2023 23:04:39 -0700", "from dpdk-zhirun-lmm.sh.intel.com ([10.67.119.94])\n by fmsmga007.fm.intel.com with ESMTP; 08 May 2023 23:04:33 -0700" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple;\n d=intel.com; i=@intel.com; q=dns/txt; s=Intel;\n t=1683612281; x=1715148281;\n h=from:to:cc:subject:date:message-id:in-reply-to:\n references:mime-version:content-transfer-encoding;\n bh=cVBFyFydx/huomX4CzztdGz9CKHuz3+cEWi6ghu8TOU=;\n b=HLqXnrUIjMWvOPGdTEJGIzC1aLnzVIRpHCfkrIwnsouq2bFkRi+HctJS\n NrgnB6nf5AgCCsGL2HEhhaj4vFmhCGdPZXBXxtj37M3qSb6kn7lRhwN5e\n 2Ml6Kp2wOJGBzPoL5wNegOL5OvFiGbrNWklGFeOLkgChF6pppIkvOk5fy\n YUL2zWD04nuHTR6VZDvve0INn741ZzgoRanlWK1u2E0AdTiZzDUbh2W6A\n 4JxWzQdhd7/O9Oe+//4SXsy6XeQfyuJ8cn72cDEpG50v7xx6f/sB49Fug\n bavxYPnOCZws0Bf5Zx69Qav1sDScQdAhH7yQU8fQiTBYfFmwnLkMGuMSd w==;", "X-IronPort-AV": [ "E=McAfee;i=\"6600,9927,10704\"; a=\"351983178\"", "E=Sophos;i=\"5.99,261,1677571200\"; d=\"scan'208\";a=\"351983178\"", "E=McAfee;i=\"6600,9927,10704\"; a=\"701700437\"", "E=Sophos;i=\"5.99,261,1677571200\"; d=\"scan'208\";a=\"701700437\"" ], "X-ExtLoop1": "1", "From": "Zhirun Yan <zhirun.yan@intel.com>", "To": "dev@dpdk.org, jerinj@marvell.com, kirankumark@marvell.com,\n ndabilpuram@marvell.com, stephen@networkplumber.org,\n pbhagavatula@marvell.com", "Cc": "cunming.liang@intel.com, haiyue.wang@intel.com,\n Zhirun Yan <zhirun.yan@intel.com>", "Subject": "[PATCH v6 15/15] doc: update multicore dispatch model in graph guides", "Date": "Tue, 9 May 2023 15:03:47 +0900", "Message-Id": "<20230509060347.1237884-16-zhirun.yan@intel.com>", "X-Mailer": "git-send-email 2.37.2", "In-Reply-To": "<20230509060347.1237884-1-zhirun.yan@intel.com>", "References": "<20230331040306.3143693-1-zhirun.yan@intel.com>\n <20230509060347.1237884-1-zhirun.yan@intel.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n <mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://mails.dpdk.org/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n <mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org" }, "content": "Update graph documentation to introduce new multicore dispatch model.\n\nSigned-off-by: Haiyue Wang <haiyue.wang@intel.com>\nSigned-off-by: Cunming Liang <cunming.liang@intel.com>\nSigned-off-by: Zhirun Yan <zhirun.yan@intel.com>\n---\n doc/guides/prog_guide/graph_lib.rst | 59 +++++++++++++++++++++++++++--\n 1 file changed, 55 insertions(+), 4 deletions(-)", "diff": "diff --git a/doc/guides/prog_guide/graph_lib.rst b/doc/guides/prog_guide/graph_lib.rst\nindex 1cfdc86433..72e26f3a5a 100644\n--- a/doc/guides/prog_guide/graph_lib.rst\n+++ b/doc/guides/prog_guide/graph_lib.rst\n@@ -189,14 +189,65 @@ In the above example, A graph object will be created with ethdev Rx\n node of port 0 and queue 0, all ipv4* nodes in the system,\n and ethdev tx node of all ports.\n \n-Multicore graph processing\n-~~~~~~~~~~~~~~~~~~~~~~~~~~\n-In the current graph library implementation, specifically,\n-``rte_graph_walk()`` and ``rte_node_enqueue*`` fast path API functions\n+graph model chossing\n+~~~~~~~~~~~~~~~~~~~~\n+Currently, there are 2 different walking model. Use\n+``rte_graph_worker_model_set()`` to set the walking model.\n+\n+RTC (Run-To-Completion)\n+^^^^^^^^^^^^^^^^^^^^^^^\n+This is the default graph walking model. specifically,\n+``rte_graph_walk_rtc()`` and ``rte_node_enqueue*`` fast path API functions\n are designed to work on single-core to have better performance.\n The fast path API works on graph object, So the multi-core graph\n processing strategy would be to create graph object PER WORKER.\n \n+Example:\n+\n+Graph: node-0 -> node-1 -> node-2 @Core0.\n+\n+.. code-block:: diff\n+\n+ + - - - - - - - - - - - - - - - - - - - - - +\n+ ' Core #0 '\n+ ' '\n+ ' +--------+ +---------+ +--------+ '\n+ ' | Node-0 | --> | Node-1 | --> | Node-2 | '\n+ ' +--------+ +---------+ +--------+ '\n+ ' '\n+ + - - - - - - - - - - - - - - - - - - - - - +\n+\n+Dispatch model\n+^^^^^^^^^^^^^^\n+The dispatch model enables a cross-core dispatching mechanism which employs\n+a scheduling work-queue to dispatch streams to other worker cores which\n+being associated with the destination node.\n+\n+Use ``rte_graph_model_dispatch_lcore_affinity_set()`` to set lcore affinity\n+with the node.\n+Each worker core will have a graph repetition. Use ``rte_graph_clone()`` to\n+clone graph for each worker and use``rte_graph_model_dispatch_core_bind()``\n+to bind graph with the worker core.\n+\n+Example:\n+\n+Graph topo: node-0 -> Core1; node-1 -> node-2; node-2 -> node-3.\n+Config graph: node-0 @Core0; node-1/3 @Core1; node-2 @Core2.\n+\n+.. code-block:: diff\n+\n+ + - - - - - -+ +- - - - - - - - - - - - - + + - - - - - -+\n+ ' Core #0 ' ' Core #1 ' ' Core #2 '\n+ ' ' ' ' ' '\n+ ' +--------+ ' ' +--------+ +--------+ ' ' +--------+ '\n+ ' | Node-0 | - - - ->| Node-1 | | Node-3 |<- - - - | Node-2 | '\n+ ' +--------+ ' ' +--------+ +--------+ ' ' +--------+ '\n+ ' ' ' | ' ' ^ '\n+ + - - - - - -+ +- - -|- - - - - - - - - - + + - - -|- - -+\n+ | |\n+ + - - - - - - - - - - - - - - - - +\n+\n+\n In fast path\n ~~~~~~~~~~~~\n Typical fast-path code looks like below, where the application\n", "prefixes": [ "v6", "15/15" ] }