This series reduces kernel datapath lock contention. I have included
the NUMA stats patches, as the rest do not apply cleanly without them.
I have added netperf TCP_CRR results (connections/second) as the first
column in the list below. These are in a specific 2-socket server,
YMMV.
I have included the current master as a baseline. The numbers are for
the best run after a warmup, representing a case when revalidation is
not necessary, but stats are still pushed continuously.
Finally, I have manually set the max_idle to 750ms, so that it would
not skew the results (too high max_idle will cause handlers to not be
able to push all flows, which leads to more upcalls, and more TCP
latency -> lower TCP_CRR score.)
Jarno Rajahalme (13):
19k Master
17k datapath: Remove 5-tuple optimization.
45.1k datapath: Per NUMA node flow stats.
datapath: Fix race.
datapath: Avoid assigning a NULL pointer to flow actions.
datapath: Use TCP flags in the flow key for stats.
datapath: Clarify locking.
45.2k datapath: Minimize dp and vport critical sections.
52.3k datapath: Minimize ovs_flow_cmd_del critical section.
52.3k datapath: Minimize ovs_flow_cmd_new_or_set critical section.
datapath: Store alloced size with sw_flow_acts.
52.7k datapath: Remove memory allocations from ovs_flow_cmd_execute.
56.2k datapath: Build netlink reply only if needed.
56.8k datapath: Do not return actions from flow delete.
datapath/datapath.c | 528 +++++++++++++++++++++++++----------------------
datapath/flow.c | 181 ++++++++--------
datapath/flow.h | 19 +-
datapath/flow_netlink.c | 78 ++-----
datapath/flow_netlink.h | 3 +-
datapath/flow_table.c | 59 +++---
datapath/flow_table.h | 6 +-
7 files changed, 445 insertions(+), 429 deletions(-)
--
1.7.10.4
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