Slow startup time on AD joined PCs

[Cristi Anichitei]

Thanks! I'll take a look at that, but I'm not able to change what runs at
system startup.

It is a bit weird that multiple users (from different organizations)
started to experience this after a Cygwin update. If I'm using an older
version I don't have these issues on the same machine (the cygserver
service does not run at system startup). Is there any change between 3.1.7
and 3.4.2 (the oldest version I was able to use in my tests) that could
have caused it?

În lun., 26 iun. 2023 la 17:12, Brian Inglis <Brian.Inglis@shaw.ca> a scris:

> On 2023-06-26 00:15, Cristi Anichitei via Cygwin wrote:
> > This has been initially reported as a Git for Windows issue:
> > https://github.com/git-for-windows/git/issues/4459
> >
> > But it has been tracked down to originate in the Cygwin project (see
> >
> https://github.com/git-for-windows/git/issues/4459#issuecomment-1580526636
> > and maybe
> >
> https://github.com/git-for-windows/git/issues/4459#issuecomment-1602566700
> ).
> >
> > Using 3.4.6.1 (from
> >
> http://mirrors.kernel.org/sourceware/cygwin/x86_64/release/cygwin/cygwin-3.4.6-1-src.tar.xz
> ),
> > running any program from /usr/bin takes at least 20 seconds, for example
> >
> > $ .\ldd.exe --version
> > ldd (cygwin) 3.4.6
> > Print shared library dependencies
> > Copyright (C) 2009 - 2023 Chris Faylor
> > This is free software; see the source for copying conditions.  There is
> NO
> > warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
> PURPOSE.
> > $ Measure-Command { .\ldd.exe --help }
> > Days              : 0
> > Hours             : 0
> > Minutes           : 0
> > Seconds           : 22
> > Milliseconds      : 552
> > Ticks             : 225529747
> > TotalDays         : 0.000261029799768519
> > TotalHours        : 0.00626471519444444
> > TotalMinutes      : 0.375882911666667
> > TotalSeconds      : 22.5529747
> > TotalMilliseconds : 22552.9747
> >
> > I have also tried this with 3.4.7 - same issue.
> >
> > Using 3.1.7 there is no slow down. I haven't tried any versions between
> > 3.1.7 and 3.4.7 yet, but I can do that.
> >
> > I'm running Windows 10 21H2 (19044.3086).
>
> https://cygwin.com/faq.html#faq.using.startup-slow
>
> Probably slow AD server or network connection, or long group membership
> lists,
> that can be ameliorated by running cygserver service at system startup, so
> only
> the first Cygwin process takes SAM/AD access hits, which are cached
> thereafter,
> and shared with all Cygwin processes on the system.
> Otherwise the first Cygwin process in each Cygwin process tree takes the
> hits,
> so if you are not running under Cygwin mintty terminal and/or Cygwin
> shell,
> every Cygwin process run from a Windows shell has to load all the SAM/AD
> info
> required to run the Cygwin process.
>
> --
> Take care. Thanks, Brian Inglis              Calgary, Alberta, Canada
>
> La perfection est atteinte                   Perfection is achieved
> non pas lorsqu'il n'y a plus rien à ajouter  not when there is no more to
> add
> mais lorsqu'il n'y a plus rien à retirer     but when there is no more to
> cut
>                                  -- Antoine de Saint-Exupéry
>