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From:	=?ISO-8859-1?Q?Ren=E9_Berber?= <r DOT berber AT computer DOT org>
Subject:	Re: DualCores and Current Cygwin problems
Date:	Thu, 10 May 2007 21:41:56 -0500
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Joseph Kowalski wrote:

[snip]
> Don't be too sure.  The configuration I described also has an Intel=20
> PRO/1000 MT with driver from Intel (via Microsoft).
>=20
> Another experiment I didn't mention is I loaded the same software stack=
=20
> on to another machine with a single core processor (Shuttle FX41).  It=20
> also has an Intel PRO/1000 MT.  It showed no problems.
>=20
> However, I suspect this is just coincidence.  My build is "network=20
> silent".  The network adapter shouldn't be involved.

Interesting.  The problems I have seen only happen after booting up, so yes=
 it=20
looks like different problems.

On the other hand every thread in Cygwin has an associated UDP connection (=
the=20
implementation uses it), so "network silent" is not quite true... but I don=
't=20
know how fork is implemented and if it uses UDP connections also.  You coul=
d=20
monitor with TCPView if any such UDP ports are being open.

The interesting part would be to know what resource is the message "Resourc=
e=20
temporarily unavailable" talking about.  It could be a Windows XP-SP2=20
limitation: can't open more than 10 connections in a given time span (the=
=20
default after SP2 set in TCPIP.SYS), it was different before SP2 but that p=
atch=20
is very old and I've only seen these messages recently.

For me, it started when I updated Exim to 4.66, about a month or two ago,=
=20
yesterday I installed version 4.67 so the problem may change again.
--=20
Ren=E9 Berber


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