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Date: Fri, 20 Feb 2015 21:20:11 +0100
From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: cygwin@cygwin.com
Subject: Re: Very slow Cygwin startup on Windows 7
Message-ID: <20150220202011.GA31682@calimero.vinschen.de>
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References: <869208266.20150210030528@yandex.ru> <3FEEC3A37A0B0A48AA326075128C32EE4EE263B8@xmb-rcd-x01.cisco.com> <20150218111515.GL8493@calimero.vinschen.de> <3FEEC3A37A0B0A48AA326075128C32EE4EE26DE4@xmb-rcd-x01.cisco.com> <20150218125429.GN8493@calimero.vinschen.de> <3FEEC3A37A0B0A48AA326075128C32EE4EE275A7@xmb-rcd-x01.cisco.com> <20150219103235.GD26084@calimero.vinschen.de> <3FEEC3A37A0B0A48AA326075128C32EE4EE27AEC@xmb-rcd-x01.cisco.com> <20150220162024.GZ26084@calimero.vinschen.de> <737114862.20150220205044@yandex.ru>
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On Feb 20 20:50, Andrey Repin wrote:
> Greetings, Corinna Vinschen!
>=20
> > So what I did now for testing is to add a timer.  If cygserver is not
> > running, the startup procedure still fetches the group info from the
> > user's token... but if it couldn't finish the job within 300ms, it
> > just stops collecting this information and moves on.
>=20
> > That should have a "mixed" effect in slow scenarios.  The startup will
> > not take longer than about 300ms, so it's comparatively fast from a
> > human perspective, but it will not entirely give up on collecting group
> > information so subsequent calls fetching group info will be faster.
>=20
> > The value itself, 300ms, is disputable, of course.  I just chose it from
> > my gut feeling.  If this method is a usable compromise, maybe 400 or
> > 500ms is good enough, I don't know.
>=20
> If this startup timer does not affect subsequent calls to the same facili=
ties,
> and only in effect during initial startup, it can be anything. 300 or 500=
ms,
> not really relevant. I see how you can be a member of 200 groups, and I r=
eally
> don't see it as bad thing, other than certain administrative tasks may be
> slow, but in more common scenario we can expect lower number of groups and
> faster response times in general.
>=20
> > I uploaded new developer snapshots containing this change to
>=20
> >   https://cygwin.com/snapshots/
>=20
> > Please give them a try.
>=20
> I should, like, REALLY get myself together to migrate to samba4 already >=
.<

Or install a Windows 2012R2 DC using the evaluation version:

https://msdn.microsoft.com/en-us/evalcenter/dn205302.aspx


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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