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authorFlorin Coras <fcoras@cisco.com>2018-06-21 08:14:34 -0700
committerDamjan Marion <dmarion@me.com>2018-06-22 07:31:29 +0000
commit9679c81b64a5da48932ec0b6aebfb473d3e0410b (patch)
tree0db5d00e7142d1c8f4d5dfb1f0ac29bf883d1c26 /test/test_lb.py
parent02c88e41791b11e8ed5dd08c76fa7bf5991ba3d7 (diff)
session: improve session lookup speeds
It would seem that this avoids using the stack for computing the subsequent crc32 by storing the 2 x u64 ip4 5-tuple key into two registers. Probably the cast to the "convenience" data structure "masks" the fact that the key is 16B. Probably ... :-) "sh run" on an ip4 tcp sender reports that the number of clocks spent in tcp_input, where a session lookup is performed, drops ~25% (from ~100 clocks/packet to ~75 clocks/packet) Change-Id: I50d647115ac72f8407bff7e3b73328ba42f0ddb5 Signed-off-by: Florin Coras <fcoras@cisco.com>
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