This is the mail archive of the
cygwin
mailing list for the Cygwin project.
Re: bad performance when opening many files on Win7
- From: Achim Gratz <Stromeko at NexGo dot DE>
- To: cygwin at cygwin dot com
- Date: Tue, 8 May 2012 13:19:01 +0000 (UTC)
- Subject: Re: bad performance when opening many files on Win7
- References: <874ns6z0cr.fsf@Rainer.invalid> <4F9A0FFB.4080201@cygwin.com> <87y5ph4t4z.fsf@Rainer.invalid> <loom.20120427T103825-468@post.gmane.org>
Achim Gratz <Stromeko <at> NexGo.DE> writes:
> Fetching all groups from the DC gave me some 60000 entries in a 4MiB group
> file. And if anything, things became even slower when using that file.
I finally found some reproduceable case where the lsass.exe process will go
berserk. It's all programs that scan all files in /usr/bin... there are 3800
and there seems to be no caching of any sort going on, so that always takes
about 20 seconds. :-(
I've scanned the ACL in that directory and these are the principals used:
BUILTIN\Administrators
BUILTIN\Administrators
BUILTIN\Users
BUILTIN\Users
AD\Domain Users
AD\Domain Users
NT AUTHORITY\SYSTEM
NT AUTHORITY\SYSTEM
I have these in /etc/passwd and/or /etc/group. I'm probably missing out on:
Everyone
Everyone
NT AUTHORITY\Authenticated Users
NT AUTHORITY\Authenticated Users
How does one get suitable entries for /etc/group on these (I have
Authentificated Users:S-1-5-11:11: in /etc/group, but nothing that I could map
to "Everyone")?
Regards,
Achim.
--
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