From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from charlotte.tuxdriver.com ([70.61.120.58]:57825 "EHLO smtp.tuxdriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751395Ab1BPQAf (ORCPT ); Wed, 16 Feb 2011 11:00:35 -0500 Date: Wed, 16 Feb 2011 10:50:11 -0500 From: "John W. Linville" To: "Nathaniel J. Smith" Cc: linux-wireless@vger.kernel.org, wey-yi.w.guy@intel.com, ilw@linux.intel.com Subject: Re: [PATCH 0/5] iwlwifi: Auto-tune tx queue size to maintain latency under load Message-ID: <20110216155011.GC10287@tuxdriver.com> References: <1297619803-2832-1-git-send-email-njs@pobox.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <1297619803-2832-1-git-send-email-njs@pobox.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: On Sun, Feb 13, 2011 at 09:56:37AM -0800, Nathaniel J. Smith wrote: > This patch series teaches the driver to measure the average rate of > packet transmission for each tx queue, and adjusts the queue size > dynamically in an attempt to achieve ~2 ms of added latency. How did you pick this number? Is there research to support this as the correct target for link latency? John -- John W. Linville Someday the world will need a hero, and you linville@tuxdriver.com might be all we have. Be ready.