From owner-freebsd-questions@FreeBSD.ORG  Mon Aug 11 13:05:19 2003
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 5E32137B401
	for <questions@freebsd.org>; Mon, 11 Aug 2003 13:05:19 -0700 (PDT)
Received: from parszamin.ca (DA-207164198.176.trytel.com [207.164.198.176])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 9DDB443F93
	for <questions@freebsd.org>; Mon, 11 Aug 2003 13:05:18 -0700 (PDT)
	(envelope-from pars@parszamin.ca)
Received: from parszamin.ca (localhost.parszamin.ca [127.0.0.1])
	by parszamin.ca (8.12.9/8.12.9) with ESMTP id h7BK5HTZ013154
	for <questions@freebsd.org>; Mon, 11 Aug 2003 16:05:17 -0400 (EDT)
	(envelope-from pars@parszamin.ca)
Received: (from pars@localhost)
	by parszamin.ca (8.12.9/8.12.9/Submit) id h7BK5GP4013153
	for questions@freebsd.org; Mon, 11 Aug 2003 16:05:16 -0400 (EDT)
Date: Mon, 11 Aug 2003 16:05:16 -0400
From: Pars Saberi <pars@parszamin.ca>
To: questions@freebsd.org
Message-ID: <20030811160516.A13133@tehran>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.2.5.1i
Subject: semaphores
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 11 Aug 2003 20:05:19 -0000

Hi,
 I was installing perl 5.8 and it would fails. Lost the error message, sorry.
However, running a google search on the error message gave only one 
result suggesting that my system was running out of semaphores. So,
`ipcs` showed that postgresql was using them and so stopping this db allowed
perl to be installed.

Now I can run both perl5.8 and postgresql, but, how do I know whether my
system is low on semaphores, and if so, how do I increase it ?
Here are  some outputes:
uname -a: FreeBSD 4.8-STABLE
ipcs :
farhad@tehran [/home/pars/perl]
 $ ipcs
Message Queues:
T     ID     KEY        MODE       OWNER    GROUP

Shared Memory:
T     ID     KEY        MODE       OWNER    GROUP
m  65536    5432001 --rw-------    pgsql    pgsql

Semaphores:
T     ID     KEY        MODE       OWNER    GROUP
s 131072    5432001 --rw-------    pgsql    pgsql
s 131073    5432002 --rw-------    pgsql    pgsql
s 131074    5432003 --rw-------    pgsql    pgsql

Thanks.