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[v2,0/1] hash: separate lf and rw lock lookup code paths

Message ID 20181110185534.5444-1-honnappa.nagarahalli@arm.com
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Series hash: separate lf and rw lock lookup code paths | expand

Message

Honnappa Nagarahalli Nov. 10, 2018, 6:55 p.m. UTC 
The lock-free algorithm has caused significant lookup
performance regression for certain use cases. The
regression is attributed to the use of non-relaxed
memory orderings.

To address the issue, 2 versions of the lookup functions
are created. One that uses the RW lock and the one that
is lock-free. This restores the performance regression
caused for use cases that used RW lock version of the
lookup function.

v2:
1) Adjusted the function call to take the lock in
   __rte_hash_lookup_with_hash_l (Jerin)
2) Squash all the intermediate commits into a single one

Honnappa Nagarahalli (1):
  hash: separate lf and rw lock lookup code paths

 lib/librte_hash/rte_cuckoo_hash.c | 304 ++++++++++++++++++++++++++++--
 1 file changed, 290 insertions(+), 14 deletions(-)

-- 
2.17.1