From owner-freebsd-hackers@FreeBSD.ORG  Fri Jun 11 10:06:36 2010
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 724EB1065672;
	Fri, 11 Jun 2010 10:06:36 +0000 (UTC)
	(envelope-from mail25@bzerk.org)
Received: from ei.bzerk.org (tunnel490.ipv6.xs4all.nl
	[IPv6:2001:888:10:1ea::2])
	by mx1.freebsd.org (Postfix) with ESMTP id D8B048FC1D;
	Fri, 11 Jun 2010 10:06:35 +0000 (UTC)
Received: from ei.bzerk.org (BOFH@localhost [127.0.0.1])
	by ei.bzerk.org (8.14.3/8.14.3) with ESMTP id o5BA6UCK090227;
	Fri, 11 Jun 2010 12:06:30 +0200 (CEST)
	(envelope-from mail25@bzerk.org)
Received: (from bulk@localhost)
	by ei.bzerk.org (8.14.3/8.14.3/Submit) id o5BA6UCV090226;
	Fri, 11 Jun 2010 12:06:30 +0200 (CEST)
	(envelope-from mail25@bzerk.org)
Date: Fri, 11 Jun 2010 12:06:29 +0200
From: Ruben de Groot <mail25@bzerk.org>
To: Romain Tarti??re <romain@freebsd.org>, Ivan Voras <ivoras@freebsd.org>,
	freebsd-hackers@freebsd.org
Message-ID: <20100611100629.GA89804@ei.bzerk.org>
Mail-Followup-To: Ruben de Groot <mail25@bzerk.org>,
	Romain Tarti??re <romain@freebsd.org>,
	Ivan Voras <ivoras@freebsd.org>, freebsd-hackers@freebsd.org
References: <huqimj$str$1@dough.gmane.org> <20100610132652.GA54859@FreeBSD.org>
	<20100611080034.GL39829@acme.spoerlein.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20100611080034.GL39829@acme.spoerlein.net>
User-Agent: Mutt/1.4.2.3i
X-Spam-Status: No, score=-4.4 required=5.0 tests=ALL_TRUSTED,BAYES_00
	autolearn=ham version=3.2.5
X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on ei.bzerk.org
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.0.1
	(ei.bzerk.org [127.0.0.1]); Fri, 11 Jun 2010 12:06:34 +0200 (CEST)
X-Mailman-Approved-At: Fri, 11 Jun 2010 11:10:31 +0000
Cc: 
Subject: Re: Proposal - increase SYSV SEMMNI and SEMMNS
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 11 Jun 2010 10:06:36 -0000

On Fri, Jun 11, 2010 at 10:00:34AM +0200, Ulrich Sp??rlein typed:
> On Thu, 10.06.2010 at 15:26:52 +0200, Romain Tarti??re wrote:
> > On Thu, Jun 10, 2010 at 01:35:47PM +0200, Ivan Voras wrote:
> > > kern.ipc.semmni: 10 -> 50
> > > kern.ipc.semmns: 60 -> 300
> > 
> > Looks like a good idea.
> > 
> > > This change is not as critical as before [...] but increasing the
> > > defaults would be a convenience move, to save some
> > > reconfiguration-and-reboot hassle when installing software.
> > 
> > In the same vein, and while they can be tuned without a reboot, some ports
> > require to increase kern.ipc.shmmax and kern.ipc.shmall for them to work
> > correctly (e.g. multimedia/totem).
> > 
> > Maybe all these 'convenience increases of IPC related defaults' can be
> > done together?
> 
> Please just do it. We should ship with sensible defaults and not
> require tinkering for these sorts of things. I'm not sure if these
> defaults are already per-arch, but the embedded folks might want to
> retain the low defaults?

Definately! And I also think application based tuning (postgres, mono) should be done 
per application, not by default.

Ruben