Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754024AbYCOQca (ORCPT ); Sat, 15 Mar 2008 12:32:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751967AbYCOQcV (ORCPT ); Sat, 15 Mar 2008 12:32:21 -0400 Received: from mu-out-0910.google.com ([209.85.134.185]:32107 "EHLO mu-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751937AbYCOQcT (ORCPT ); Sat, 15 Mar 2008 12:32:19 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=rBSyoJDh614gBsrwRMAqRErlSXgxKvmeBLw3g08ug9B4L0M0BGVpVZgMGAWg1JnYYhWE+2zbdL5zqZ3k3H5X0TB3zMY9RQO88u4LcuL2In8n5y6NmWELsLLTw4aIb1SPaY9rkkmqQGMptq4cn8ZcHdhskZt333YBvcdjsUxVw+w= Message-ID: <2c0942db0803150932s6e654e28g5255ac7af451741b@mail.gmail.com> Date: Sat, 15 Mar 2008 09:32:16 -0700 From: "Ray Lee" To: "Marc Perkel" , Netdev Subject: Re: TCP stack optimization for high number of connections [OT] Cc: linux-kernel@vger.kernel.org In-Reply-To: <873209.1586.qm@web52510.mail.re2.yahoo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <873209.1586.qm@web52510.mail.re2.yahoo.com> X-Google-Sender-Auth: 6ad8d0c9215c41cc Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1019 Lines: 27 (CC:netdev added.) On Sat, Mar 15, 2008 at 8:47 AM, Marc Perkel wrote: > I'm running a front end spam filtering service and I > get a lot of incoming connections but not a lot of > volume of traffic. I'm experiencing some high loads > and I think it might be related to the volume of > connections it's processing. I often will be connected > to 2500 email servers at once and a lot more that are > trying to connect and being denied. > > My question - are there any optimizations I can do to > make the TCP faster for high number of short lived > connections? > > Also - how much do iptable entries slow things down > and is there any optimizations for that? > > > Marc Perkel > Junk Email Filter dot com > http://www.junkemailfilter.com -- 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/