System freezes with Bird running on FreeBSD 11.1

[Clistenes Viana]

Following the outputs;

 # netstat -nr4 | wc -l
   688431

 # time netstat -nr > /dev/null
 3.474u 1.063s 0:04.57 99.1% 183+183k 0+0io 6pf+0w
 3.519u 1.196s 0:04.71 99.7% 183+183k 0+0io 0pf+0w
 3.468u 0.841s 0:04.31 99.7% 183+183k 0+0io 0pf+0w
 3.492u 0.841s 0:04.33 100.0% 183+183k 0+0io 0pf+0w
‪
More info about bird;

 # birdc show protocols all
 BIRD 1.6.3 ready.
 name proto table state since info
 pDirect Direct master up 16:56:18
   Routes: 2 imported, 0 exported, 2 preferred
 
 pDevice Device master up 16:56:18
   Routes: 0 imported, 0 exported, 0 preferred
 
 pKernel Kernel master up 16:56:18
   Routes: 696 imported, 688426 exported, 6 preferred
   Route change stats: received rejected filtered ignored accepted
     Import updates: 701 0 0 0 701
     Import withdraws: 5 0 --- 0 5
     Export updates: 2231443 739 126 --- 2230578
     Export withdraws: 22269 --- --- --- 22303
 
 pStaticOSPF Static master up 16:56:18
   Routes: 1 imported, 0 exported, 1 preferred
 
 pOspf OSPF master up 16:56:18 Running
   Routes: 701 imported, 4 exported, 700 preferred
   Route change stats: received rejected filtered ignored accepted
     Import updates: 831 0 72 0 759
     Import withdraws: 51 0 --- 84 39
     Export updates: 2231442 757 2230681 --- 4
     Export withdraws: 22269 --- --- --- 0
 
 pStaticBGP Static master up 16:56:18
   Routes: 62 imported, 0 exported, 62 preferred
 
 pWithDRAXXvia2 BGP master up 16:56:27 Established
   Routes: 687726 imported, 62 exported, 687711 preferred
   Route change stats: received rejected filtered ignored accepted
     Import updates: 1528118 0 0 237156 1290962
     Import withdraws: 22146 0 --- 0 22146
     Export updates: 2231378 2229821 1495 --- 62
     Export withdraws: 22269 --- --- --- 0
 
 pWithDRAXXvia3 BGP master up 16:56:26 Established
   Routes: 687726 imported, 62 exported, 15 preferred
   Route change stats: received rejected filtered ignored accepted
     Import updates: 1524020 0 0 239253 1284767
     Import withdraws: 22113 0 --- 0 22113
     Export updates: 2231378 2229821 1495 --- 62
     Export withdraws: 22269 --- --- --- 0
 

-------- Mensagem original --------

Data: Wed, 03 Jan 2018 14:43:35 +0100
Assunto: Re: System freezes with Bird running on FreeBSD 11.1
Cc: bird-users at network.cz <bird-users at network.cz>
Para: Clistenes Viana <cviana at vianet.com.br>
De: Ondrej Zajicek <santiago at crfreenet.org>
On Wed, Jan 03, 2018 at 11:30:48AM -0200, Clistenes Viana wrote:
> Hello Guys,
> 
> Let me do a question about bird 1.6.3 to see if you can help me on
> this, we are trying to running it in a server with freebsd 11.1, but
> the system freeze every 20 seconds, looking for the logs we found
> some
> I/O loop cycle messages like this:
> 
> Jan  2 14:03:15 tau bird: I/O loop cycle took 12509 ms for 8 events


Hello

How many routes do you have in kernel routing table?

How much time it takes to run something like netstat -nr > /dev/null ?


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