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Subject: Re: New Opteron box, dedicated to PostgreSQL
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Axel Rau wrote:

>> kern.ipc.somaxconn=2048
> This one is new to me.

Shouldn't make a difference, it's TCP "backlog" size - how many clients 
will be allowed to wait on the server's accept() call. It shouldn't make 
a difference except if you have *really* high connections/sec, and then 
only up to maximum connections you allow. It's practically never a 
factor in performance.