Re: BIRD crashes with 1000 peers

[Alexander V. Chernikov]

https://gitlab.labs.nic.cz/labs/bird/commit/3aed0a6ff7b2b811a535202fd787281d2ac3340912.02.2016, 19:15, "Daniel Seidenstücker" <d.seidenstuec...@googlemail.com>:

Dear BIRD community,

 

I want to connect BIRD 1.5.0 with more than 1000 ExaBGP peers on Ubuntu 14.04 LTS 64 Bit. Connecting 1000 peers works but if I increase the peer count to more than 1024 it fails due to the soft file limit of 1024.

To raise that I tried the usual (ulimit, /etc/security/limits.conf) but BIRD doesn’t take these new limits. Later I found the advice to add  “ulimit -n 10000” to the init.d script before each “start-stop-daemon” command. After restarting BIRD it gets the correct soft and hard limits (cat /proc/<pid>/limits | grep files). But now only 750 peers work and connecting 1000 peers crashs bird without any error message in syslog (“log syslog all” configured). (I did not test 751-999 peers.)

You need to recompile bird with different FD_SETSIZE limit. For example, https://cs.uwaterloo.ca/~brecht/servers/openfiles.html can be used as a guide.

As for the crashes, they were fixed by https://gitlab.labs.nic.cz/labs/bird/commit/338f85ca7721fac16394ccabd561ddb5ccaacb36 && https://gitlab.labs.nic.cz/labs/bird/commit/3aed0a6ff7b2b811a535202fd787281d2ac33409

 

It would be nice if somebody could help meJ.

 

Thanks,

Daniel Seidenstuecker