Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261284AbTIVRqK (ORCPT ); Mon, 22 Sep 2003 13:46:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261345AbTIVRqK (ORCPT ); Mon, 22 Sep 2003 13:46:10 -0400 Received: from mail.ncsa.uiuc.edu ([141.142.2.28]:22757 "EHLO mail.ncsa.uiuc.edu") by vger.kernel.org with ESMTP id S261284AbTIVRqI (ORCPT ); Mon, 22 Sep 2003 13:46:08 -0400 X-Envelope-From: hjafri@ncsa.uiuc.edu Message-Id: <5.1.0.14.2.20030922124433.0748c478@mail.ncsa.uiuc.edu> X-Mailer: QUALCOMM Windows Eudora Version 5.1 Date: Mon, 22 Sep 2003 12:46:07 -0500 To: linux-kernel@vger.kernel.org From: "Hassan M. Jafri" Subject: TCP connections dropped Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 876 Lines: 21 Kernel 2.4.19 glibc 2.2.5 I am running a parallel program on 170 nodes, with 2 processes on each nodes. so 340 total processes. Each process has a TCP connection established with every other process. So each process has 339 sockets in ESTABLISHED state. The problem occurs when I try to write() on these socket. The TCP connection gets dropped for some of the sockets of a few processes as soon as they try to write to those socket. This problem, however, does not occur, if I reduce the number of processes to less than 306 (305 TCP sockets/connections for each process). Any ideas why connections are getting dropped? -Hassan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/