[Babel-users] babeld slashes kernel route manipulation performance by 17000%

[Daniel Gröber]

On Thu, Apr 07, 2022 at 11:02:15PM +0200, Daniel Gröber wrote:
> Hi Toke,
> 
> On Thu, Apr 07, 2022 at 12:19:46AM +0200, Toke Høiland-Jørgensen wrote:
> > I doubt that can have fixed this, though? But if it's gone, well, good
> > news? :P
> 
> I just managed to trigger it again so probably no :) This is on
> 5.10.0-13-amd64/5.10.106-1 with babeld 1.9.1 and bird version 2.0.9.

Just got another trigger, this time with babeld 1.11 + bird 2.0.9.

Interesting tidbit: if I SIGSTOP babeld insertion performance goes right
back up. When I SIGCONT it it goes back to snailtown.

Note it's probably not babeld starving bird of CPU as this is on a quadcore
AMD GX-412TC and babeld/bird are using at most one CPU each.

--Daniel