From owner-freebsd-hackers@FreeBSD.ORG Tue May 6 02:42:25 2003 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8C8DE37B404 for ; Tue, 6 May 2003 02:42:25 -0700 (PDT) Received: from srv1.cosmo-project.de (srv1.cosmo-project.de [213.83.6.106]) by mx1.FreeBSD.org (Postfix) with ESMTP id DA29E43F3F for ; Tue, 6 May 2003 02:42:23 -0700 (PDT) (envelope-from ticso@cicely9.cicely.de) Received: from cicely5.cicely.de (cicely5.cicely.de [IPv6:3ffe:400:8d0:301:200:92ff:fe9b:20e7]) by srv1.cosmo-project.de (8.12.9/8.12.9) with ESMTP id h469gGrN077476 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=OK); Tue, 6 May 2003 11:42:20 +0200 (CEST) (envelope-from ticso@cicely9.cicely.de) Received: from cicely9.cicely.de (cicely9.cicely.de [IPv6:3ffe:400:8d0:301:210:5aff:fe30:1c1a]) by cicely5.cicely.de (8.12.9/8.12.9) with ESMTP id h469gF0j070342 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 6 May 2003 11:42:16 +0200 (CEST) (envelope-from ticso@cicely9.cicely.de) Received: from cicely9.cicely.de (localhost [127.0.0.1]) by cicely9.cicely.de (8.12.9/8.12.8) with ESMTP id h469gEtA083519; Tue, 6 May 2003 11:42:14 +0200 (CEST) (envelope-from ticso@cicely9.cicely.de) Received: (from ticso@localhost) by cicely9.cicely.de (8.12.9/8.12.9/Submit) id h469gCbP083518; Tue, 6 May 2003 11:42:12 +0200 (CEST) (envelope-from ticso) Date: Tue, 6 May 2003 11:42:11 +0200 From: Bernd Walter To: Bogdan TARU Message-ID: <20030506094211.GQ63639@cicely9.cicely.de> References: <20030506095139.F68615-100000@fw.office.icom> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030506095139.F68615-100000@fw.office.icom> X-Operating-System: FreeBSD cicely9.cicely.de 5.0-CURRENT alpha User-Agent: Mutt/1.5.3i cc: freebsd-hackers@freebsd.org Subject: Re: collecting pv entries -- suggest increasing PMAP_SHPGPERPROC X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: ticso@cicely.de List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 May 2003 09:42:25 -0000 On Tue, May 06, 2003 at 09:55:49AM +0200, Bogdan TARU wrote: > > Hi everyone, > > I got the following message in the system log: > > /kernel: pmap_collect: collecting pv entries -- suggest increasing > PMAP_SHPGPERPROC > > The machine being more than 200km away, I cannot compile a new kernel > right away. So I was wondering if there are any tweaks that I can do > 'remotely', to solve the problem at least temporary. You should think about a remote accessible serial console. Compiling kernel doesn't require console access - although it might be helpfull if you did something wrong. > The machine in question is serving as a web server (apache + php + > phpaccelerator), and has 1GB of RAM. The following are some infos I could > find about the shared memory: That's partly unrelated. The reason is that your system uses a lot of shared memory, but shared memory doesn't have to be sysv shared memory. It's more likely that the memory used is mmaped data. Maybe your apache is sending a single big file on many connections the same time. The first check would be to see if you can avoid the situation completely, maybe by splitting extremly big and popular files. If this is not possible than you really have to increase the table as advised by the kernel. -- B.Walter BWCT http://www.bwct.de ticso@bwct.de info@bwct.de