X-Recipient:	archive-cygwin AT delorie DOT com
DomainKey-Signature:	a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:from:to:subject:date:message-id:references
	:in-reply-to:content-type:content-transfer-encoding
	:mime-version; q=dns; s=default; b=JfU2z0IeXSPocDW2cdwSWnRJfovLZ
	Uv0jRQKR0CfosiLRTEjffGDQkseTnXtrpfij6HKiIi8BpvnX84+PL62GrVqyjsQn
	x7g/1O5aL6fK8eHqKL8Y7i6kWj5YJLrDIgmufI5Lhtac/ENZPILyf7creNgUeF/8
	LjqIYNjMfFiltQ=
DKIM-Signature:	v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:from:to:subject:date:message-id:references
	:in-reply-to:content-type:content-transfer-encoding
	:mime-version; s=default; bh=WMXa23V0fZYL0cf/OfM0MVsSiEY=; b=l7A
	sCeLsIGfMaDlIjvqTr9hUi/6RPT64/e5Qu8FXVdQk6jKos3G1zpLv4UfCFcGkoC1
	Zc9+2fPQpP+TqsODPmm2ujZT/ReKpHbpIdcl8Ar/CKTEz+52m0n5RB/clVn9g6x+
	4/9bH4BO0rVjhevMoujJV8V1W+lzRR3DCh+M6gYw=
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
Authentication-Results:	sourceware.org; auth=none
X-Virus-Found:	No
X-Spam-SWARE-Status:	No, score=0.4 required=5.0 tests=AWL,BAYES_00,SPF_PASS,T_RP_MATCHES_RCVD autolearn=ham version=3.3.2
X-HELO:	alln-iport-3.cisco.com
X-IronPort-Anti-Spam-Filtered:	true
X-IronPort-Anti-Spam-Result:	A0BRBQBhFeNU/5pdJa1bgwaBMMAdhUyCTwKBEkMBAQEBAQF8hAwBAQEDATpPAgEIIhQQMhcBDQIEG4gfCM88AQEBAQEBAQEBAQEBAQEBAQEBGosPhBcmOIMWgRQFjziKT443gz4ig26BckF/AQEB
From:	"Dennis Hagarty (dehagart)" <dehagart AT cisco DOT com>
To:	"cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject:	RE: Very slow Cygwin startup on Windows 7
Date:	Tue, 17 Feb 2015 10:23:36 +0000
Message-ID:	<3FEEC3A37A0B0A48AA326075128C32EE4EE263B8@xmb-rcd-x01.cisco.com>
References:	<3FEEC3A37A0B0A48AA326075128C32EE4DC9F0E8 AT xmb-rcd-x01 DOT cisco DOT com> <87mw4nugdx DOT fsf AT Rainer DOT invalid> <3FEEC3A37A0B0A48AA326075128C32EE4DC9F137 AT xmb-rcd-x01 DOT cisco DOT com> <869208266 DOT 20150210030528 AT yandex DOT ru>
In-Reply-To:	<869208266.20150210030528@yandex.ru>
MIME-Version:	1.0
X-IsSubscribed:	yes
X-MIME-Autoconverted:	from quoted-printable to 8bit by delorie.com id t1HANsij024476

>>>> 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.

>If you are accepting suggestions, and up for some experimentation, try this:

># getent passwd $(id -u) > /etc/passwd
># getent group $(id -G) > /etc/group
># echo -e "#\npasswd: files db\ngroup: files db\n" > /etc/nsswitch.conf
>
>and start bash without cygserver running. Just for test.
>The idea is to have "your" groups in files so that in simple case of (just
>startup" Cygwin don't have to talk to DC all too much. If at all.

>You'd still need to run cygserver to benefit from long-time caching, though.

Apologies for my slow response - urgent RFI's.

Ok, so I reverted nsswitch to the 'files db' setting.
I stopped cygserver
I ran your commands to recreate /etc/passwd and /etc/group 
(they now contain 1 line and 3 lines respectively - before it had about 10 & 21 lines in each)

To create a bash terminal window (from cmd) takes about 5-6 minutes.
cmd /v:on /c "echo !TIME! & C:\cygwin64\bin\mintty.exe /bin/echo "test" & echo !TIME!"
11:01:20.27
11:06:59.78 = 5:39.51

Starting cygserver:
11:08:31.55
11:08:31.62 = 0:00.07

Stopping it again:
11:09:19.02
11:15:04.45 = 05:45.43

With the 'db' entry excluded as a control:
11:15:56.80
11:15:56.90 = 00:00.10

I reverted back to use files+db and my larger passwd and group files, turned on cygserver:
11:19:34.31
11:19:34.38 = 00:00.07

Regards
Dennis



--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

- Raw text -