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From: Achim Gratz <Stromeko@Nexgo.DE>
To: cygwin@cygwin.com
Subject: Re: [ANNOUNCEMENT] TEST RELEASE: Cygwin 2.3.0-0.4
Date: Mon, 26 Oct 2015 16:14:00 -0000	[thread overview]
Message-ID: <562E4ED0.7020907@Nexgo.DE> (raw)
In-Reply-To: <20151026100756.GC31990@calimero.vinschen.de>

Am 26.10.2015 um 11:07 schrieb Corinna Vinschen:
> Erm, really?  I tested this locally with a directory with hundreds
> of files, each of which belonged to another user or group, and that
> resulted in a 25% slowdown.  Not 1000%.  Oh boy.

That test is almost as bad as it can ever get.  Given that enumerating 
all AD accouts with mkpasswd takes about 2 hours and I'm doing something 
very similar here, I'm not even surprised.  I was more surprised to see 
the server go so fast, but my guess is that it can use jumbo frames to 
talk to the AD.

>> While that hurts, the more usual case with many files from the
>> same user doesn't feel any slower at the moment.  The access through VPN
>> will be interesting, though...
>
> Did you try this in the meantime?

No, sorry.

> Given the above result, I'm wondering if we can afford using AuthZ at
> all.  OTOH I don't see any other way to get the correct POSIX permissions
> from a non-Cygwin ACL :(

If you really want fast but incorrect there's always the "noacl" mount 
option.

-- 
Achim.

(on the road :-)

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  reply	other threads:[~2015-10-26 16:03 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-23  1:52 Corinna Vinschen
2015-10-23 12:35 ` Achim Gratz
2015-10-23 12:55   ` Corinna Vinschen
2015-10-23 13:10     ` Corinna Vinschen
2015-12-21 13:23       ` Thomas Wolff
2015-12-21 15:01         ` Corinna Vinschen
2015-10-23 14:52 ` Achim Gratz
2015-10-26 11:13   ` Corinna Vinschen
2015-10-26 16:14     ` Achim Gratz [this message]
2015-10-27 10:10       ` Corinna Vinschen
2015-10-27 13:28         ` Achim Gratz
2015-10-27 15:11           ` Corinna Vinschen
2015-12-06  9:58   ` Achim Gratz
2015-12-06 14:08     ` Corinna Vinschen
2015-12-06 14:29       ` Achim Gratz
2015-12-06 19:04         ` Corinna Vinschen
2015-12-06 19:50           ` Achim Gratz

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