Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932245AbXINOe5 (ORCPT ); Fri, 14 Sep 2007 10:34:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753186AbXINOem (ORCPT ); Fri, 14 Sep 2007 10:34:42 -0400 Received: from iolanthe.rowland.org ([192.131.102.54]:57251 "HELO iolanthe.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S932115AbXINOek (ORCPT ); Fri, 14 Sep 2007 10:34:40 -0400 Date: Fri, 14 Sep 2007 10:34:40 -0400 (EDT) From: Alan Stern X-X-Sender: stern@iolanthe.rowland.org To: Matthew Dharm cc: Linus Torvalds , Adrian Bunk , Adrian Bunk , Greg KH , Andrew Morton , Kernel development list , USB development list , Oliver Neukum Subject: Re: [GIT PATCH] USB autosuspend fixes for 2.6.23-rc6 In-Reply-To: <20070914002416.GD14439@one-eyed-alien.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 932 Lines: 23 On Thu, 13 Sep 2007, Matthew Dharm wrote: > > In fact, setting max_sectors down to 64 is probably overkill -- 120 > > ought to be enough. But there may have been one or two oddball devices > > that really did have a 32-KB limit, and better safe than sorry. At one > > point an engineer from Genesys said their devices did, although they do > > seem to work perfectly well with 64-KB transfers (and that's what > > Windows gives them). > > It's worth pointing out that performance drops like a stone as this number > goes down. Does anybody have good performance figures, using a high-quality device? This is the sort of thing where it helps to have some real numbers. Alan Stern - 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/