From owner-freebsd-stable@FreeBSD.ORG  Sat Jun 17 19:52:05 2006
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
X-Original-To: freebsd-stable@freebsd.org
Delivered-To: freebsd-stable@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 1249C16A479
	for <freebsd-stable@freebsd.org>; Sat, 17 Jun 2006 19:52:05 +0000 (UTC)
	(envelope-from maxim@macomnet.ru)
Received: from mp2.macomnet.net (mp2.macomnet.net [195.128.64.6])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 7CC5743D45
	for <freebsd-stable@freebsd.org>; Sat, 17 Jun 2006 19:52:04 +0000 (GMT)
	(envelope-from maxim@macomnet.ru)
Received: from localhost (localhost.int.ru [127.0.0.1] (may be forged))
	by mp2.macomnet.net (8.13.7/8.13.3) with ESMTP id k5HJq2Gr041882;
	Sat, 17 Jun 2006 23:52:02 +0400 (MSD)
	(envelope-from maxim@macomnet.ru)
Date: Sat, 17 Jun 2006 23:52:02 +0400 (MSD)
From: Maxim Konovalov <maxim@macomnet.ru>
To: "Marc G. Fournier" <scrappy@hub.org>
In-Reply-To: <20060617164334.K1114@ganymede.hub.org>
Message-ID: <20060617234931.W41802@mp2.macomnet.net>
References: <20060617164334.K1114@ganymede.hub.org>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Cc: freebsd-stable@freebsd.org
Subject: Re: 6.1:  kern.ipc.maxpipekva
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>, 
	<mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
	<mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 17 Jun 2006 19:52:05 -0000

On Sat, 17 Jun 2006, 16:44-0300, Marc G. Fournier wrote:

>
> Jun 17 16:00:03 pluto kernel: kern.ipc.maxpipekva exceeded; see tuning(7)
> Jun 17 16:00:04 pluto kernel: kern.ipc.maxpipekva exceeded; see tuning(7)

I thought about removing this reference but then decided that better
to add a couple of words to tuning(7) man page (and didn't add).

> but I can't seem to find anything in tuning(7) about it ... so, what
> is it and how do I monitor for it?

kern/sys_pipe.c:

 * In order to limit the resource use of pipes, two sysctls exist:
 *
 * kern.ipc.maxpipekva - This is a hard limit on the amount of pageable
 * address space available to us in pipe_map. This value is normally
 * autotuned, but may also be loader tuned.
 *
 * kern.ipc.pipekva - This read-only sysctl tracks the current amount of
 * memory in use by pipes.

-- 
Maxim Konovalov