From owner-freebsd-stable@FreeBSD.ORG  Thu Dec  6 11:06:56 2007
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
Delivered-To: freebsd-stable@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 46DEF16A4C4
	for <freebsd-stable@freebsd.org>; Thu,  6 Dec 2007 11:06:56 +0000 (UTC)
	(envelope-from pviersel@office.caiw.nl)
Received: from maquis.kabelfoon.nl (maquis-ext.kabelfoon.nl [62.45.52.209])
	by mx1.freebsd.org (Postfix) with ESMTP id 0F6F013C461
	for <freebsd-stable@freebsd.org>; Thu,  6 Dec 2007 11:06:55 +0000 (UTC)
	(envelope-from pviersel@office.caiw.nl)
Received: from [192.168.8.127] (unknown [192.168.8.127])
	by maquis.kabelfoon.nl (Postfix) with ESMTP id 1DE502FACB
	for <freebsd-stable@freebsd.org>; Thu,  6 Dec 2007 11:37:51 +0100 (CET)
User-Agent: Microsoft-Entourage/10.1.4.030702.0
Date: Thu, 06 Dec 2007 11:37:50 +0100
From: Patrick van Iersel <pviersel@office.caiw.nl>
To: <freebsd-stable@freebsd.org>
Message-ID: <C37D8F8E.39687%pviersel@office.caiw.nl>
Mime-version: 1.0
Content-type: text/plain; charset="US-ASCII"
Content-transfer-encoding: 7bit
Subject: Extreme load with local password db lookups
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: Thu, 06 Dec 2007 11:06:56 -0000

Hi,

Here's the situation. We have an web/ftp server with around 74000 users
defined in the local unix password database. On 4.9-stable which it is
running now, there is no noticable load when lookups are done (logins via
ftp, ~user lookups from apache etc.). We want to migrate this system to
6-stable.
However on 6-STABLE (FreeBSD 6.3-PRERELEASE #0: Wed Dec  5 13:35:05 CET
2007) these same lookups cause very high load and things slow down to a
crawl.

Does anybody have an idea what causes this behavior?

Thanx in advance for any insights.

Best regards,
Patrick.