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On Aug 26, 2013, at 17:20, Sean Luke <[log in to unmask]> wrote:

> On Aug 26, 2013, at 10:27 AM, Ralf Buschermöhle wrote:
> 
>> These are just the running nodes. Previously there have been a few thousand connections from a cluster (handled successfully).
> 
> Some more.  Try executing the following command on your BSD box to see how many sockets and files (combined) you can have open at one time:
> 
> 	sysctl kern.maxfilesperproc
> 
> On my Mac (a BSD box) I get around 10K.

Slightly more on the BSD box

kern.maxfilesperproc: 11095

> I wonder if ECJ isn't properly closing the sockets, and so you're hitting a socket limit by repeatedly adding and removing clients.  It looks correct to me though.

Yeap - to me, too. I am starting to get curious ...

Ralf