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Message-ID: <bcf536aa-dc2f-4273-9193-bd221125356e@gmail.com>
Date: Fri, 14 Nov 2025 20:29:28 +0300
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Subject: RE: slow initial Domain Controller communication after adding machine
 to another domain
To: cygwin AT cygwin DOT com
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 <1163504455 DOT 20251114115538 AT yandex DOT ru>
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From: Ilya Basin via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Ilya Basin <basinilya AT gmail DOT com>
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Hi Andrey.
No I didn't enable cygserver. There's another issue: if I try to list a directory where files are owned by a domain user of the old domain then the delay is the number of files multiplied by a few seconds. So tools like rsync are very slow. I think we need a cache for failed user id mappings.


-------- Original Message --------
From: Andrey Repin <anrdaemon AT yandex DOT ru>
Sent: Friday, November 14, 2025 at 11:55 AM UTC+3
To: Ilya Basin <basinilya AT gmail DOT com>, cygwin AT cygwin DOT com
Subject: RE: slow initial Domain Controller communication after adding machine to another domain

Greetings, Ilya Basin!

>> Hi List.
>> Be it /bin/bash.exe or even /bin/echo.exe, when I launch this program from Windows it takes 15 seconds to start.
>> procmon shows that it communicates with our domain controller port 389 (ldap) during this time.

>> I tried to completely recreate /etc/group and /etc/passwd and I tried to
>> delete them. It didn't make any difference.
>> However, mkpasswd and mkgroup themselves complete instantly.

>> Querying the Active Directory with a powershel cmdlet is fast (the port is different though: 9389).

Do you have a cygserver running?


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