On Mon, Jan 05, 2026 at 03:35:43PM +0100, Christoph via Bird-users wrote: > Some more lines from the logfile suggests an issue with netlink performance? > > 2026-01-05 01:16:00.367 [0001] <WARN> Netlink: File exists << many times > [...] > 2026-01-05 01:16:44.093 [0001] <WARN> kernel1: Can't scan, still pruning
This is more likely a synchronization bug. Will check though. > 2026-01-05 01:22:42.408 [0001] <BUG> kernel1.ipv4: Attempted to start > channel's already started export > 2026-01-05 01:24:21.910 [0001] <BUG> kernel1.ipv4: Attempted to start > channel's already started export And this is even more suspicious. Will check whether it's possible to reproduce that from this description and get back to you if i need more information from you. > net.core.rmem_max=16777216 > net.core.rmem_default=4194304 > net.core.wmem_max=4194304 > > Are these still sensible values or should they be increased further? > This is a BGP router getting 2 full tables. BIRD 3 should be _faster_ doing this, not slower. If you need to update these values, it's definitely _our_ bug. Maria -- Maria Matejka (she/her) | BIRD Team Leader | CZ.NIC, z.s.p.o.
