From owner-freebsd-stable@FreeBSD.ORG Sun Jun 8 18:58:37 2014 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 24038385 for ; Sun, 8 Jun 2014 18:58:37 +0000 (UTC) Received: from mail-oa0-x230.google.com (mail-oa0-x230.google.com [IPv6:2607:f8b0:4003:c02::230]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id E11492EE9 for ; Sun, 8 Jun 2014 18:58:36 +0000 (UTC) Received: by mail-oa0-f48.google.com with SMTP id g18so5009144oah.35 for ; Sun, 08 Jun 2014 11:58:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=AlRBB8b+lv/PyIdK+2QUrwpKbKQpr4wTZZDADGIVqVo=; b=qG/s1SXTUh43Ak/bE4LkhD6AihYLPfR9XIQxCSPlbrUXl7XKKTOlxNB7OGrxZiGX6t swJrUDlEiIoE45DuHxlcSghq+zOqmrKSDyaKSlgPD5Pb3kz+DUZZJLpFnPmtNmyMxInx BSn2YfAC1loe+4D2HvGtiuM045bmC7s0m37Gzl3ga1uXhMccK46MeVaBPrGTR0Z0HeqR ztEfIZUmin8PsXzhE8FRzxIBqjfBNqkI73HYrJyFiI6lrj5w3dd72GEwaHZE4qVyPCu5 6B/r3sQaqtImXD0VqKMFig3H9cPi5HLSCxxC3gq33gt+kIfNy6IAMeHpN7HaVqtjNWpe V5Kg== MIME-Version: 1.0 X-Received: by 10.182.20.105 with SMTP id m9mr20203632obe.36.1402253916258; Sun, 08 Jun 2014 11:58:36 -0700 (PDT) Received: by 10.76.170.39 with HTTP; Sun, 8 Jun 2014 11:58:36 -0700 (PDT) In-Reply-To: <5394A848.7030609@m5p.com> References: <5394A848.7030609@m5p.com> Date: Sun, 8 Jun 2014 20:58:36 +0200 Message-ID: Subject: Re: Not to beat a dead horse, but ... From: Andreas Nilsson To: George Mitchell Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.18 Cc: FreeBSD Stable Mailing List X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 08 Jun 2014 18:58:37 -0000 On Sun, Jun 8, 2014 at 8:15 PM, George Mitchell wrote: > When I run this command on 10-STABLE on a uniprocessor system while > running the misc/dnetc port: > > cd /usr/src > time make buildworld && time make buildkernel && time make installkernel > > On revision 266422 with SCHED_ULE, I get (showing the time lines only): > > 7045.988u 897.681s 4:00:33.89 55.0% 29430+492k 27927+17003io > 30943pf+519w > 1155.683u 149.422s 52:49.60 41.1% 25418+410k 7452+20843io > 12166pf+248w > 7.101u 4.838s 8:03.57 2.4% 5905+221k 1179+9461io 1345pf+67w > > On revision 267211 with SCHED_4BSD: > > 6950.087u 665.074s 2:40:36.19 79.0% 29929+502k 33651+17368io > 31151pf+151w > 1148.066u 134.312s 26:40.95 80.1% 26234+426k 9681+24613io > 11917pf+106w > 6.774u 4.369s 0:33.90 32.8% 3110+320k 1388+10979io 1514pf+3w > > Since the majority of my systems are uniprocessors and I like to > run dnetc, SCHED_ULE has been a dealbreaker for me since day one. > Consequently I can't use freebsd_update. > > The party line seems to be, "Well, everybody knows SCHED_ULE sucks > on uniprocessors." Hello? Not everybody has upgraded to multiple > core or hyperthreaded processors yet. Do we really want to write > off every uniprocessor piece of hardware out here? > Yes? Can you even buy a system today that is uniprocessor? My phone is a dual core thing, and it got written of because of its "meagre" hardware. Top of the line phones has 8 cores. So, seriously, what non-ancient system have you acquired that is uniprocessor? Please include links for available hardware for laptops, desktops or servers. /A > > The other assertion I hear is that SCHED_ULE really excels on some > unspecified workload or other. I'd love to see exactly how much > better it does than 4BSD on these mythological loads. -- George > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" >