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Date: Thu, 25 Feb 2010 17:07:52 +0530
Message-ID: <6d19fbfd1002250337y178375f0r9004366a7b2b4a32@mail.gmail.com>
Subject: Re: Max no of parallel SSH sessions with Cygwin SSHD
From: Girish Sadhani <girishss86 AT gmail DOT com>
To: cygwin AT cygwin DOT com
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Hi Corrina,

After the change in the registry keys i was able to create 78 parallel
sessions, approximately double of the earlier 38. I have the value set
to 1024 to the earlier 512.

Thanks a lot !

On Wed, Feb 24, 2010 at 5:51 PM, Corinna Vinschen
<corinna-cygwin AT cygwin DOT com> wrote:
> On Feb 24 16:47, Girish Sadhani wrote:
>> 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 reac=
hed.
>
> Yes. =A0See the URL I sent in my first reply.
>
>>
>> On Wed, Feb 24, 2010 at 4:18 PM, Corinna Vinschen
>> <corinna-cygwin AT cygwin DOT 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 argume=
nt
>> > called SharedSection which define default heap sizes. =A0The third one=
 is
>> > the value which would influence a sshd started as service. =A0See
>> > http://support.microsoft.com/kb/184802
>
>
> Corinna
>
> --
> Corinna Vinschen =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Please, send mails re=
garding Cygwin to
> Cygwin Project Co-Leader =A0 =A0 =A0 =A0 =A0cygwin AT cygwin DOT com
> Red Hat
>
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>



--=20
Regards,
Girish. S. Sadhani

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