X-Recipient:	archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status:	No, hits=-1.5 required=5.0 tests=AWL,BAYES_00,T_RP_MATCHES_RCVD
X-Spam-Check-By:	sourceware.org
Message-ID:	<4CA48C58.1020004@sidefx.com>
Date:	Thu, 30 Sep 2010 09:10:48 -0400
From:	Edward Lam <edward AT sidefx DOT com>
User-Agent:	Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.9.2.9) Gecko/20100915 Thunderbird/3.1.4
MIME-Version:	1.0
To:	cygwin AT cygwin DOT com
Subject:	Re: R: Cygwin 1.7.7 fork/exec performance MUCH slower than 1.5.25
References:	<533759 DOT 75961 DOT qm AT web25504 DOT mail DOT ukl DOT yahoo DOT com>
In-Reply-To:	<533759.75961.qm@web25504.mail.ukl.yahoo.com>
X-IsSubscribed:	yes
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

> testing on /tmp/benchmark with XPS P2
>
> cygwin 1.7.8s 20100924

You're testing on the latest snapshot against his cygwin 1.7.7 results. 
This gives me hope that Cygwin can become faster because Sagi Ben-Akiva 
was willing to track down the cause of the slowdown [1]. Last I read, 
it's not clear whether the latest CVS changes are faster though [2]. 
However, it's probably worth trying out the 20100926 snapshot.

We haven't mentioned yet whether we are running under 32-bit or 64-bit 
Windows. It would be useful to know whether the problem only affects 
64-bit Windows or not. Looking at the code changes, I would have thought 
it would equally affect 32-bit Windows.

1. http://cygwin.com/ml/cygwin/2010-08/msg00964.html
2. http://cygwin.com/ml/cygwin/2010-09/msg00796.html

Regards,
-Edward

--
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 -