From owner-freebsd-bugs@FreeBSD.ORG  Tue Jul 29 05:40:04 2008
Return-Path: <owner-freebsd-bugs@FreeBSD.ORG>
Delivered-To: freebsd-bugs@hub.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 6578F106566B
	for <freebsd-bugs@hub.freebsd.org>;
	Tue, 29 Jul 2008 05:40:04 +0000 (UTC)
	(envelope-from gnats@FreeBSD.org)
Received: from freefall.freebsd.org (freefall.freebsd.org
	[IPv6:2001:4f8:fff6::28])
	by mx1.freebsd.org (Postfix) with ESMTP id 63E478FC0A
	for <freebsd-bugs@hub.freebsd.org>;
	Tue, 29 Jul 2008 05:40:04 +0000 (UTC)
	(envelope-from gnats@FreeBSD.org)
Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1])
	by freefall.freebsd.org (8.14.2/8.14.2) with ESMTP id m6T5e4q4088803
	for <freebsd-bugs@freefall.freebsd.org>; Tue, 29 Jul 2008 05:40:04 GMT
	(envelope-from gnats@freefall.freebsd.org)
Received: (from gnats@localhost)
	by freefall.freebsd.org (8.14.2/8.14.1/Submit) id m6T5e4EA088801;
	Tue, 29 Jul 2008 05:40:04 GMT (envelope-from gnats)
Date: Tue, 29 Jul 2008 05:40:04 GMT
Message-Id: <200807290540.m6T5e4EA088801@freefall.freebsd.org>
To: freebsd-bugs@FreeBSD.org
From: Nate Eldredge <neldredge@math.ucsd.edu>
Cc: 
Subject: Re: bin/125185: csh(1) exit on signal 11
X-BeenThere: freebsd-bugs@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: Nate Eldredge <neldredge@math.ucsd.edu>
List-Id: Bug reports <freebsd-bugs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
	<mailto:freebsd-bugs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-bugs>
List-Post: <mailto:freebsd-bugs@freebsd.org>
List-Help: <mailto:freebsd-bugs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
	<mailto:freebsd-bugs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 29 Jul 2008 05:40:04 -0000

The following reply was made to PR bin/125185; it has been noted by GNATS.

From: Nate Eldredge <neldredge@math.ucsd.edu>
To: bug-followup@FreeBSD.org, 666.root@gmail.com
Cc:  
Subject: Re: bin/125185: csh(1) exit on signal 11
Date: Mon, 28 Jul 2008 22:35:31 -0700 (PDT)

 FWIW, I ran the test at http://berlin.ccc.de/~packet/fork_test.c, 
 modifying it to malloc() 10 MB first, to make it have about the same size 
 as a csh process.  On my 1.8 GHz amd64 running 7.0-RELEASE I get
 
 measured fork time: 251396 nsecs
 measured vfork time: 243734 nsecs
 
 a difference of about 3%.  So the penalty for switching back to fork() 
 instead of vfork() wouldn't be very much, and this is certainly the 
 simplest fix -- a one-byte patch :)
 
 Thoughts?
 
 -- 
 
 Nate Eldredge
 neldredge@math.ucsd.edu