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Date: Mon, 15 Sep 2014 08:44:42 +0200
From: Bram Van Steenlandt <bram@diomedia.be>
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To: adrian@freebsd.org
Subject: Re: Listen queue guestion
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Hi,

I use python, here the parameters are (socket.AF_UNIX,socket.SOCK_STREAM)

Bram
op 14-09-14 23:05, Adrian Chadd schreef:
> Hi!
>
> What kind of sockets is it specifically using?
>
>
> -a
>
>
> On 14 September 2014 12:27, Bram Van Steenlandt <bram@diomedia.be> wrote:
>> Hi,
>>
>> I'm porting an plc automation system to freebsd and while doing so I got
>> errors like these:
>> sonewconn: pcb 0xfffff8000cecc870: Listen queue overflow: 76 already in
>> queue awaiting acceptance
>>
>> With the help of netstat I've found the problem, 2 programs communicate with
>> ipc file like sockets and the "client" was connecting too fast (it was
>> connecting and disconnecting in a small for loop).
>>
>> Still, on linux this worked and there will be cases where I may bump in to
>> this limit again (a lot of different programs communicate with one master
>> program over ipc).
>>
>> I've found kern.ipc.somaxconn but this seems to be only for TCP connections.
>>
>> Is there a sysctl or kernel parameter that allows me to set this queue a bit
>> larger ?
>>
>> Thx
>> Bram
>>
>> _______________________________________________
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