X-Spam-Check-By: sourceware.org
Message-ID: <4597ACA2.6010406@algonet.se>
Date: Sun, 31 Dec 2006 13:27:14 +0100
From: Magnus Holmgren <lear AT algonet DOT se>
User-Agent: Thunderbird 1.5.0.9 (Windows/20061207)
MIME-Version: 1.0
To: cygwin AT cygwin DOT com
Subject: Re: Cygwin slower on one computer
References: <45804D3A DOT 6060602 AT algonet DOT se> <4593B234 DOT 6010505 AT algonet DOT se> <45969AB6 DOT 8000709 AT t-online DOT de>
In-Reply-To: <45969AB6.8000709@t-online.de>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
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

Christian Franke wrote:

> The root of the problem is the "host intrusion prevention system" driver 
> khips.sys.
> 
> Even if this feature is turned off (or unavailable in the free version), 
> the driver keeps running and slows down fork() considerably.
> (It probably hooks somewhere into Read/WriteProcessMemory())
> 
> Stopping the firewall service does not help.
> Only stopping the driver ("sc stop khips") or uninstalling KPF helps.

Interesting. Didn't know it could be turned off more effectively. 
Unfortunately, that doesn't fix all of the slowdown KPF causes for me. I 
think the program file checksumming done in the application behavior 
blocking causes the rest (making my test case take almost twice as long 
to run, even with the behavior blocking turned off). Didn't find any 
service to really disable that.

   Magnus


--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/