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| author |   Florin Coras <fcoras@cisco.com> | 2018-06-21 08:14:34 -0700 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2018-06-22 07:31:29 +0000 |
| commit | 9679c81b64a5da48932ec0b6aebfb473d3e0410b (patch) | |
| tree | 0db5d00e7142d1c8f4d5dfb1f0ac29bf883d1c26 /doxygen | |
| parent | 02c88e41791b11e8ed5dd08c76fa7bf5991ba3d7 (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>
Diffstat (limited to 'doxygen')
0 files changed, 0 insertions, 0 deletions