[tac_plus] SOMAXCONN too small

[Heasley]

> Am 17.10.2014 um 06:24 schrieb Stephen Satchell <satch at ine.com>:
> 
> In our shop, we have a number of NAS devices talking to a pair of tac_plus servers in a failover configuration.  The configuration file changes constantly.  (Don't ask.)  What we have been experiencing is that during periods of heavy login activity, some of the users have been left high and dry, sparking tech support calls and a degraded customer experience.
> 
> Investigating the source, I see that SOMAXCONN is set to 5 (by default?  Didn't see any way to adjust from ./configure) which for our application is, I suspect, too small.
> 
> Is there a particular reason your LISTEN queue is so short?  Or is this one of the those situations where "5 should be enough for the usual cases"?
> 
> I'll be patching the source to boost this to 50 to see what happens.

I dont see why 50 should be a problem. Fbsd default is 128. i suppose one may prefer a client find no connection and roll to another server vs wait. So, its probsbly better left to the default or cmdline option. 

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