MAX_SESSIONS Increase Impact

Damien Miller djm at
Sun Dec 9 09:15:04 EST 2007

On Fri, 7 Dec 2007, Shively, Gregory wrote:

> I'm hoping this is the the right location for this question....
> I've been working with some developers that are desiring to use the
> multiplexing capabilities of OpenSSH, but have hit the default limit of
> 10. I've seen some discussions of increasing this default limit
> previously and have noticed that some of the Linux distros have
> increased the number to 64; I'm curious of the impact. The developers
> that I'm working with have discussed approx 90'ish slave processes using
> the master ssh process, so I've been thinking about using 128 for
> possible furture increases by this group.

I'd like it to be uncapped and purely dynamic, but we need to audit
the server to make sure it doesn't fatal() when it hits a fd limit in
an unexpected place.


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