From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 19 Nov 2002 16:45:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 19 Nov 2002 16:45:00 -0500 Received: from [207.22.154.234] ([207.22.154.234]:57028 "HELO oa2.largo.com") by vger.kernel.org with SMTP id ; Tue, 19 Nov 2002 16:44:58 -0500 Subject: Off List Message - Kernel Problem - Respond To Me From: Dave Richards To: linux-kernel@vger.kernel.org Content-Type: text/plain Organization: Message-Id: <1037742240.31569.9.camel@oa3> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.0 Date: 19 Nov 2002 16:44:00 -0500 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hello- The City of Largo is a big KDE/Linux shop, as many of you are aware we run about 800 unique users, on 450 thin clients running the KDE desktop. We upgraded from RedHat 7.2 to RedHat 7.3 and therefore from KDE 2.x to KDE 3.x. There seems to be a scaling problem that was introduced in KDE 3.x that we cannot resolve. Previously a Dual 933Mhz system would easily run 200+ users at once, but now the KDE 3.x runs out of resources around 91 users. We have been told that it's related to the maximum number of threads allowed in the 2.4 kernel itself and is not something that can be fixed. When we get to the 91st person, we started getting this message--> Nov 19 14:09:41 desktop_a kernel: ldt allocation failed We get this error over and over again and no additional users can log into the server. I'm not on the linux-kernel list, but if anyone has insight into this issue, please drop me a line. If you know a way to fix this in the 2.4 kernel too, or can verify that we have to wait for 2.5/2.6 we need to know that too. Thanks as always for your help Dave Richards City of Largo, FL Systems Administrator. -- Dave Richards