24.02.2021, 10:50, "Olivier Cochard-Labbé" <oliv...@freebsd.org>: > On Wed, Feb 24, 2021 at 1:22 AM Marek Zarychta < > zarych...@plan-b.pwste.edu.pl> wrote: > >> > >> >> Please let me ask only one final question. Does adding: >> >> net.route.algo.inet.algo=dpdk_lpm4 >> net.route.algo.inet6.algo=dpdk_lpm6 >> >> to /etc/sysctl.conf make any sense? I see that right FIB_ALGO is >> automatically picked up when the module is available. > > My understanding is the network stack will switch to the optimum algorithm > regarding the number of routes installed. > cf "Automatic algorithm selection" chapter here: > https://reviews.freebsd.org/D27401 > > So you don't need to set this sysctl. To add some points to Olivier's explanation: indeed, algorithm selection SHOULD happen automatically. Some things to keep in mind: when the BGP sessions flaps kernel routes may go from the full-view to near-zero and vice versa. In that case, automatic selection will switch to lockless_radix for the range between 10..1000 routes (or similar). Lockless radix schedules rebuild for every change, so the speed of deleting/adding first 1k routes may be slower than expected.
> > Regards, > > Olivier > _______________________________________________ > freebsd-net@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org" _______________________________________________ freebsd-net@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
