On 8/8/17 12:23 PM, Vincent Bernat wrote: > If the user hasn't installed any custom rules, don't go through the > whole FIB rules layer. This is pretty similar to f4530fa574df (ipv4: > Avoid overhead when no custom FIB rules are installed). > > Using a micro-benchmark module [1], timing ip6_route_output() with > get_cycles(), with 40,000 routes in the main routing table, before this > patch: ... > At the frequency of the host during the bench (~ 3.7 GHz), this is > about a 100 ns difference on the median value. > > A next step would be to collapse local and main tables, as in > 0ddcf43d5d4a (ipv4: FIB Local/MAIN table collapse). > > [1]: > https://github.com/vincentbernat/network-lab/blob/master/lab-routes-ipv6/kbench_mod.c > > Signed-off-by: Vincent Bernat <vinc...@bernat.im> > Reviewed-by: Jiri Pirko <j...@mellanox.com> > --- > include/net/netns/ipv6.h | 1 + > net/ipv6/fib6_rules.c | 40 +++++++++++++++++++++++++++------------- > net/ipv6/route.c | 1 + > 3 files changed, 29 insertions(+), 13 deletions(-) >
LGTM. Acked-by: David Ahern <dsah...@gmail.com>
