From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gagan Arneja Subject: Re: [RFC] New driver API to speed up small packets xmits Date: Thu, 10 May 2007 14:14:05 -0700 Message-ID: <46438B1D.1050802@gmail.com> References: <464370BA.3020907@hp.com> <20070510.133216.95506791.davem@davemloft.net> <46438568.1020403@hp.com> <20070510.140251.02302242.davem@davemloft.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: rick.jones2@hp.com, vladislav.yasevich@hp.com, ian.mcdonald@jandi.co.nz, krkumar2@in.ibm.com, johnpol@2ka.mipt.ru, netdev@vger.kernel.org To: David Miller Return-path: Received: from smtp-outbound-1.vmware.com ([65.113.40.141]:34371 "EHLO smtp-outbound-1.vmware.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1762281AbXEJVOG (ORCPT ); Thu, 10 May 2007 17:14:06 -0400 In-Reply-To: <20070510.140251.02302242.davem@davemloft.net> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org David Miller wrote: > From: Rick Jones > Date: Thu, 10 May 2007 13:49:44 -0700 > >> I'd think one would only do this in those situations/places where a >> natural "out of driver" queue develops in the first place wouldn't >> one? > > Indeed. And one builds in qdisc because your device sink is slow. There's nothing inherently there in the kernel encouraging Qdisc->q to grow. It's precisely these broken devices that can take advantage of cluster transmits. -- Gagan