Mailing-List: contact cygwin-help@sourceware.cygnus.com; run by ezmlm
List-Subscribe: <mailto:cygwin-subscribe@sources.redhat.com>
List-Archive: <http://sources.redhat.com/ml/cygwin/>
List-Post: <mailto:cygwin@sources.redhat.com>
List-Help: <mailto:cygwin-help@sources.redhat.com>, <http://sources.redhat.com/ml/#faqs>
Sender: cygwin-owner@sources.redhat.com
Delivered-To: mailing list cygwin@sources.redhat.com
Message-ID: <5D95D7082AD4D311944500062950E414532D96@sydmgw.syd.aspect.com.au>
From: Kelvin Lee <Kelvin.Lee@lansa.com.au>
To: cygwin@cygwin.com
Subject: 1.3.[12]: readdir() performance problem introduced
Date: Mon, 28 May 2001 11:09:35 +1000
MIME-Version: 1.0
X-Mailer: Internet Mail Service (5.5.2650.21)
Content-Type: text/plain;
	charset="iso-8859-1"

For 1.3.[12]:

Noticed from the behaviour of man. It took long long time before returning
"No manual entry for x" for unavailable page x.
For 1.1.7, man returned the message almost immediately.

Dug into the source code of man and did some profiling, I found that more
than 95% of time was spent on the system call readdir(). And that is several
hundred times slower than 1.1.7.

Will try to produce a patch. But need to figure out how to compile
cygwin1.dll first.

Regards,

Kelvin Lee

--
Want to unsubscribe from this list?
Check out: http://cygwin.com/ml/#unsubscribe-simple