Currently, the rte_graph_walk() and rte_node_enqueue* fast path API functions in graph lib implementation are designed to work on single-core.
This solution(RFC) proposes usage of cross-core dispatching mechanism to enhance the graph scaling strategy. We introduce Scheduler Workqueue then we could directly dispatch streams to another worker core which is affinity with a specific node. This RFC： 1. Introduce core affinity API and graph clone API. 2. Introduce key functions to enqueue/dequeue for dispatching streams. 3. Enhance rte_graph_walk by cross-core dispatch. 4. Add l2fwd-graph example and stats for cross-core dispatching. With this patch set, it could easily plan and orchestrate stream on multi-core systems. Future work: 1. Support to affinity lcore set for one node. 2. Use l3fwd-graph instead of l2fwd-graph as example in patch 06. 3. Add new parameter, like --node(nodeid, lcoreid) to config node for core affinity. Comments and suggestions are welcome. Thanks! Haiyue Wang (1): examples: add l2fwd-graph Zhirun Yan (5): graph: introduce core affinity API into graph graph: introduce graph clone API for other worker core graph: enable stream moving cross cores graph: enhance graph walk by cross-core dispatch graph: add stats for corss-core dispatching examples/l2fwd-graph/main.c | 455 +++++++++++++++++++++++++++++++ examples/l2fwd-graph/meson.build | 25 ++ examples/l2fwd-graph/node.c | 263 ++++++++++++++++++ examples/l2fwd-graph/node.h | 64 +++++ examples/meson.build | 1 + lib/graph/graph.c | 121 ++++++++ lib/graph/graph_debug.c | 4 + lib/graph/graph_populate.c | 1 + lib/graph/graph_private.h | 43 +++ lib/graph/graph_sched.c | 194 +++++++++++++ lib/graph/graph_stats.c | 19 +- lib/graph/meson.build | 2 + lib/graph/node.c | 25 ++ lib/graph/rte_graph.h | 50 ++++ lib/graph/rte_graph_worker.h | 59 ++++ lib/graph/version.map | 5 + 16 files changed, 1327 insertions(+), 4 deletions(-) create mode 100644 examples/l2fwd-graph/main.c create mode 100644 examples/l2fwd-graph/meson.build create mode 100644 examples/l2fwd-graph/node.c create mode 100644 examples/l2fwd-graph/node.h create mode 100644 lib/graph/graph_sched.c -- 2.25.1
