Very slow Cygwin startup on Windows 7

Corinna Vinschen
Mon Feb 9 18:51:00 GMT 2015

On Feb  9 18:18, Dennis Hagarty (dehagart) wrote:
> >> 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).
> >
> >
> >Regards,
> >Achim.
> 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.

It helps to read the announcements ;)


Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat
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