On Fri, Aug 21, 2015 at 03:25:21PM -0700, Jarno Rajahalme wrote: > Classifier partitions allowed skipping subtables when if was known > from the flow's metadata field that the subtable cannot possibly > match. This functionality was later implemented in a more general > fashion by staged lookup, where the first stage also covers the > metadata field, among the rest of the non-packet fields in the struct > flow. While in theory skipping a subtable on the basis of the > metadata field alone could produce more effective wildcards, on the > basis of our testsuite coverage it does not seem to be the case, as > removing the partitioning feature did not result in any test failures. > > Removing the partitioning feature makes classifier lookups roughly 20% > faster when a wildcard mask is not needed, and roughly 10% faster when > a wildcard mask is needed, as tested with the test-classifier > benchmark with one lookup thread. > > Found by profiling with 'perf'. > > Signed-off-by: Jarno Rajahalme <jrajaha...@nicira.com>
Acked-by: Ben Pfaff <b...@nicira.com> _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
