Very slow Cygwin startup on Windows 7

Dennis Hagarty (dehagart)
Mon Feb 9 18:18:00 GMT 2015

>> Well, nsswitch.conf was a good suggestion - I'd left it as the default
>> (which is empty), but I added a 'files' entry and it came good again.
>> Changing the passwd and group entries to 'files db' makes it very slow
>> again.
>Limit the number of entries that Cygwin fetches from the DC.  Also,
>starting a cygserver would help.
>> Not sure what changed here, I have a very good connection to my DC,
>> but obviously something wrong here now.
>You may be surprised at how slow a DC really can be when it sees some
>load, regardless of connection speed when you try to fetch several
>thousand entries.  If I were to try a 'mkpasswd -d' on our DC I'd
>usually have to wait about an hour with very little network traffic to
>show (the resulting file would be about 4MiB).

Thanks Achim - I've recreated my passwd and group files to be sure.
I checked some domain lookups and they take a second or two for each entry - quite slow. 

So, I'll leave nsswitch where it is for now and I've started cygserver.

But I'm just wondering how this failed after I updated - I was using it successfully 30 mins previously.
I've had it configured this way for years.

Thanks for the assistance and explanations.

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