Re: Max no of parallel SSH sessions with Cygwin SSHD

[Girish Sadhani <girishss86 at gmail dot com>]

Hi Corinna,

the following error was logged in the sshd.log :

2 [main] sshd 7140 d:\Sygwin\usr\sbin\sshd.exe: *** fatal error -
could not load user32, Win32 error 1114

I tried to google this but could not make too much sense of the error.
Its supposed to be a failure of a dll initialization.

And this occurs only after the sessions limit mentioned earlier are reached.

On Wed, Feb 24, 2010 at 4:18 PM, Corinna Vinschen
<corinna-cygwin@cygwin.com> wrote:
> On Feb 24 10:02, Girish Sadhani wrote:
>> Hello All,
>>
>> I am trying to use Cygwin SSHD in my project. I have defined a
>> subsystem under SSHD which gets accessed by the client.
>>
>> Each subsystem invocation spawns 3 processes (1 sshd + 1sh + 1 tclsh).
>>
>> I have observed that on WinXP only 22 parallel sessions are possible
>> whereas on a Win2k3 server 48 parallel sessions are possible. Both are
>> of a similar hardware configuration (3Ghz CPU, 2GB RAM). After which
>> it seems like some resource allocation limit is reached, though there
>> is a lot more Memory and CPU available. I have tried increasing the
>> heap allocation but it does not help the situation.
>>
>> 1. My question is that why is there a difference between the 2 OSs ?
>> 2. Does XP have resource allocation lower limits than win2k3 server ?
>> 3. How can this be overcome ? (some OS settings ..)
>
> I have no idea if that helps, but it could be related to the Windows
> subsystem settings in the registry There are three values in an argument
> called SharedSection which define default heap sizes. ?The third one is
> the value which would influence a sshd started as service. ?See
> http://support.microsoft.com/kb/184802
>
>
> Corinna
>
> --
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> Cygwin Project Co-Leader ? ? ? ? ?cygwin AT cygwin DOT com
> Red Hat
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-- 
Regards,
Girish. S. Sadhani

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