Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753359AbZIITRj (ORCPT ); Wed, 9 Sep 2009 15:17:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752789AbZIITRi (ORCPT ); Wed, 9 Sep 2009 15:17:38 -0400 Received: from mx1.redhat.com ([209.132.183.28]:21561 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752613AbZIITRi (ORCPT ); Wed, 9 Sep 2009 15:17:38 -0400 Date: Wed, 9 Sep 2009 15:16:37 -0400 From: Chuck Ebbert To: Paul Sheer Cc: linux-kernel@vger.kernel.org, roque@di.fc.ul.pt Subject: Re: TCP kernel tables overflowing after sustained 1000 new connections per second Message-ID: <20090909151637.6e5fb595@dhcp-100-2-144.bos.redhat.com> In-Reply-To: References: Organization: Red Hat, Inc. Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 786 Lines: 18 On Wed, 9 Sep 2009 20:46:07 +0200 Paul Sheer wrote: > I am developing a high-performance application, and testing against Apache. > It makes 1000 new connections to Apache per second. > > After 16 seconds the test grinds to a halt. A Linux kernel problem. There are > several hurdles to overcome when trying to sustain such through-put. Some > are configuration issues, others I believe are real problems with the kernel > internals. I'll discuss these all below. > You should send this to netdev@vger.kernel.org . -- 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/