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List:       openssh-unix-dev
Subject:    Re: MaxDisplays configuration option
From:       Nico Kadel-Garcia <nkadel () gmail ! com>
Date:       2016-06-05 0:05:02
Message-ID: CAOCN9ryO9xQ0msXzMwc2DV0wOHh+okChAM+4wobfSKg_8=xf=A () mail ! gmail ! com
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On Sat, Jun 4, 2016 at 4:00 PM, AG <openssh@mzpqnxow.com> wrote:
>>
>> From decades in the field, I'd say It's pretty weird. I've not
>> personally seen anything approaching that number of clients on a
>> single server in..... well, not since I worked with Multics back in
>> the 1980's. Dozens on a robust system, yes. One thousand?
>
>>> We do have some boxes with concurrent ssh-users in the lower 3-digit
>>> range. But in general this seems to be rare, especially since software
>>> is often unprepared for and untested in that amount of activity (see
>>> e.g. https://github.com/systemd/systemd/issues/1961).
>>>
>>> For the number of X displays, there was never any issue, usually since
>>> CPU and memory resources run out long before you run out of display
>>> numbers. Users just pick another box or their laptop, if applications
>>> are slow, so the number of X displays is self-limiting ;)
>>>
>>>
>>>
>>> Ciao,
>>>
>>> Alexander Wuerstlein.
>
> I should clarify, these aren't systems that have users shell access to.
> It's an X11 forward only, used as a chokepoint into a segregated network.
>
> Anyway, I will clean up the patch and add documentation and then report
> back. I've already created an entry on the bugtracker in case anyone wants
> to follow along.
>
> https://bugzilla.mindrot.org/show_bug.cgi?id=2580
>
> Thx,
> A

*Oh*. OK, that suddenly makes a great deal more sense.
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