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X-Authentication-Warning:	slinky.cs.nyu.edu: pechtcha owned process doing -bs
Date:	Thu, 1 May 2003 16:52:38 -0400 (EDT)
From:	Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To:	cygwin AT cygwin DOT com
To:	John R Lyon <jack AT sie DOT arizona DOT edu>
cc:	cygwin AT cygwin DOT com
Subject:	Re: Cygwin is VERY slow now
In-Reply-To:	<3EB16E7D.2090209@sie.arizona.edu>
Message-ID:	<Pine.GSO.4.44.0305011648060.25128-100000@slinky.cs.nyu.edu>
Importance:	Normal
MIME-Version:	1.0

On Thu, 1 May 2003, John R Lyon wrote:

> Lately, as I've read in some other messages, Cygwin seems painfully
> slow. However, I have this observation: "It is slow only on an updated
> version of Windows XP".
>
> I have Cygwin installed on the Windows 2000 machine I use at work and
> updated installations have continued to operate at normal speed. My most
> recent update of Cygwin was today (May 1).
>
> I have virtually identical installations on a Windows XP desktop and an
> XP laptop. They are also up to date and they are so slow that they are
> almost unusable. I first noticed the slowdown sometime last week. I DO
> NOT have the dreaded "//c" notation in my PATH.
>
> I tried disabling the virus checker and saw no improvement.
>
> My conclusion from all of this is that a recent Windows update was the
> culprit. To check this out, I just uninstalled the latest hotfix
> "Q8114993" from my laptop. To my considerable surprise, the laptop's
> version of Cygwin is now back to its original (fast) speed!
>
> Hope this helps someone and it would be nice to figure out a workaround
> since it's good to keep Windows up to date.
> - Jack

Jack,

If there is a short-running command (e.g., ls, cp, id) that gets
noticeably slower after the hotfix, an interesting piece of data would be
the output of strace on that command, both with and without the hotfix.
That would show where the time is going upon installing the hotfix.  One
possibility that's been reported is the gethostname() call, since Cygwin
just leverages winsock's implementation, and the hotfix might have changed
that.  There may be others.  The strace output would be a good start,
though.
	Igor
-- 
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     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski
    '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!

Knowledge is an unending adventure at the edge of uncertainty.
  -- Leto II


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