From owner-freebsd-arm@freebsd.org Wed Jul 29 11:00:19 2015 Return-Path: Delivered-To: freebsd-arm@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 10CF99AE182 for ; Wed, 29 Jul 2015 11:00:19 +0000 (UTC) (envelope-from hps@selasky.org) Received: from mail.turbocat.net (heidi.turbocat.net [88.198.202.214]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id C6270AEA for ; Wed, 29 Jul 2015 11:00:18 +0000 (UTC) (envelope-from hps@selasky.org) Received: from laptop015.home.selasky.org (cm-176.74.213.204.customer.telag.net [176.74.213.204]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.turbocat.net (Postfix) with ESMTPSA id A530B1FE022; Wed, 29 Jul 2015 13:00:17 +0200 (CEST) Message-ID: <55B8B297.1010008@selasky.org> Date: Wed, 29 Jul 2015 13:01:43 +0200 From: Hans Petter Selasky User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: Svatopluk Kraus CC: Jia-Shiun Li , "freebsd-arm@freebsd.org" Subject: Re: [RPI-B] [HEADS UP] DWC OTG TX path optimisation for 11-current References: <55A7D8CE.4020809@selasky.org> <55B23276.8090703@selasky.org> <55B73113.2020308@selasky.org> <55B8AB76.7030603@selasky.org> In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 Jul 2015 11:00:19 -0000 On 07/29/15 12:42, Svatopluk Kraus wrote: > On Wed, Jul 29, 2015 at 12:31 PM, Hans Petter Selasky wrote: >> On 07/29/15 12:08, Svatopluk Kraus wrote: >>> >>> On Tue, Jul 28, 2015 at 9:36 AM, Hans Petter Selasky >>> wrote: >>>> >>>> Hi, >>>> >>>> Can you test this: >>>> >>>> https://svnweb.freebsd.org/changeset/base/285935 >>>> >>> >>> I'm hunting some strange behaviour slowdowning my set RPI2 - usb3 hub >>> - usb3 disk during buildworld, but I have noticed the following: >>> >>> make -j6 buildworld >>> >>> before r285935 -> 60145.29 real 350932.67 user 36402.54 sys >>> after r285935 -> 67831.38 real 196310.43 user 19135.73 sys >>> >>> The kernel before r285935 was day or two older. >>> >>> These are just one-run times, however the difference is quite big. The >>> change r285935 could influence the thing I'm investigating so it's >>> worse now, but still ... >>> >> >> Regarding build times you should also take "r285068" into account. >> > > Yes, I know about that. The r285068 was applied in both kernels. > Hi, The "sys" and "user" times are down. While the "real" time is up. That means more sleeping??? There is a knob in "hw.usb.umass.throttle" which you can set to slow down the disk access. Maybe it's reading files faster than before and then starts swapping? --HPS