Subject: Re: New sysctl "net.listen_backlog"?
To: Todd Vierling <>
From: Marc Slemko <>
List: tech-net
Date: 09/14/1998 11:48:42
On Mon, 14 Sep 1998, Todd Vierling wrote:

> I'd like to address PR 5750 by adding a sysctl "net.listen_backlog" which
> specifies the upper limit of the connection backlog of a listen() call.
> The kernel default for this value would be 5, _but_ the definition of
> SOMAXCONN in <sys/socket.h> would be changed to something intended to make
> reasonable use of an increased value by default (say, 32).  Since listen()
> silently reduces a larger-than-the-limit number automatically, this would
> not interfere with program operation.
> Comments?

What is any modern OS doing defaulting to something tiny like 5 or 32?
That is very broken.