[TriLUG] Maximum Network Connections

[Joseph S. Tate]

On Mon, Feb 27, 2012 at 3:10 PM, Len Boyle <Len.Boyle at sas.com> wrote:

> One possible issue is that you are running out of available socket
> connections.
> This could be at the gobal level. Or at a smaller level if you have
> restrictions on which port ranges can be used.
> We have seen this  with backup servers and had to make changes to reduce
> the number of sockets tied up in the
> tcp_fin_wait_2 state. On Solaris there is a setting for this,
> /usr/sbin/ndd -set /dev/tcp tcp_fin_wait_2_flush_interval 67500 I do not
> believe that this exists in the same form on Linux.
>

I've increased the port limits to 10000-65535 to increase the port range.
There's a way to recycle or close time-wait sockets, but docs say those
solutions are dangerous.