Bird 1.5 and 1.6 memory leak

[C. Jon Larsen]

debian stretch, bird v 1.6.3-2 is rock solid

FWIW i saw zero leaks or issues on debian wheezy, jessie, devuan jessie 
either.

on multiple rrs taking several million routes I am at:

birdc
BIRD 1.6.3 ready.
bird> show mem
BIRD memory usage
Routing tables:    126 MB
Route attributes:   93 MB
ROA tables:        112  B
Protocols:         823 kB
Total:             219 MB

alpine linux also works very well, no issues taking multiple full tables 
on core/edge as well:

(host: core1)  (user: root)  (time= 11:23:53)
  > ~ # birdc
BIRD 1.6.0 ready.
bird> show mem
BIRD memory usage
Routing tables:    182 MB
Route attributes:  156 MB
ROA tables:        192  B
Protocols:         686 kB
Total:             339 MB
bird>





On Fri, 13 Apr 2018, Willy Goiffon wrote:

> Hello,
>
> I installed different version of bird on Ubuntu 16.04 (namely, 1.5.0, 1.6.3, 
> 1.6.4).
> After leaving the daemon running for ~1 hour, the memory used by the
> host is over 8Gib. However, when running `birdc show memory`, I get
> the following:
>
>        BIRD memory usage
>        Routing tables:     21 kB
>        Route attributes:   11 kB
>        ROA tables:        192  B
>        Protocols:          22 kB
>        Total:             102 kB
>
> My config is pretty basic (edited, see attached) as we have 2 BGP
> protocols using 2 ASN (one public, one private), each exporting the
> routes learnt from the other.
>
> The leak seems to be related to the traffic going through the server,
> as the memory of the host remains still when there is no traffic
> going on. It is triggered by bird though, because I don't have the
> leak when the routes are configured statically and bird is shut down.
>
> The weird thing about this is that the memory is not used by the bird
> process itself. It's shown as used memory by the host, but no process
> is actually using this memory.
> I know that it's leaking because of bird though because it's the only
> process installed and running on this host.
>
> Has anyone ever encountered such a behavior, or can see an issue in
> my configuration?
>
> Thanks in advance for your help
> -- 
> Willy