From owner-freebsd-current@FreeBSD.ORG Mon Mar 18 14:27:40 2013 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 7F50DD3C; Mon, 18 Mar 2013 14:27:40 +0000 (UTC) (envelope-from m.e.sanliturk@gmail.com) Received: from mail-vc0-f172.google.com (mail-vc0-f172.google.com [209.85.220.172]) by mx1.freebsd.org (Postfix) with ESMTP id 03763DFB; Mon, 18 Mar 2013 14:27:39 +0000 (UTC) Received: by mail-vc0-f172.google.com with SMTP id hr11so2963131vcb.17 for ; Mon, 18 Mar 2013 07:27:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:in-reply-to:references:date:message-id :subject:from:to:cc:content-type; bh=38I3sVwA8+zcG7YuUOppaWqjzz2bvtq54L958yBo5tM=; b=p3aDn4G7DT0RWViLuiZEYm9nn+wSqH4sP8zRkaKJAhTr3lNwzN1CWTWLPiGshq9DT2 RciMNTx8qjOSPyLinA+eWLTP5aUiqm+JizZQUolA/9gvhxXNmP1W/TIdcjboOglnbptA 60xPxwAy9ducQDDwy3nijgQKmdLUPREr3min4ag9MPdDG7Nypz12A3REcge99bn1SnUr zAgxB+ojWWwncRl7NxqP+nRnRAQo1hVU4sZ9Ly/VjoZ1LRaibYXNr0pBaSLxAUGwWMWj zFk+d92sjsQq6Os18wsQA3YfpF5SGhCRHHAtCGT+3knFjFdFTCbyClhrp6MKirYrjAAT CAMw== MIME-Version: 1.0 X-Received: by 10.52.68.116 with SMTP id v20mr17027453vdt.126.1363616858871; Mon, 18 Mar 2013 07:27:38 -0700 (PDT) Received: by 10.58.132.203 with HTTP; Mon, 18 Mar 2013 07:27:38 -0700 (PDT) In-Reply-To: <514715F9.2080506@freebsd.org> References: <35878.1363607691@critter.freebsd.dk> <514715F9.2080506@freebsd.org> Date: Mon, 18 Mar 2013 07:27:38 -0700 Message-ID: Subject: Re: FreeBSD is very slow when Memory chip sizes are imbalanced in slots From: Mehmet Erol Sanliturk To: Nathan Whitehorn Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.14 Cc: freebsd-current@freebsd.org X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Mar 2013 14:27:40 -0000 On Mon, Mar 18, 2013 at 6:26 AM, Nathan Whitehorn wrote: > On 03/18/13 07:18, Mehmet Erol Sanliturk wrote: > > On Mon, Mar 18, 2013 at 4:54 AM, Poul-Henning Kamp >wrote: > > > >> In message >> DjjMoe5ttGA@mail.gmail.com>, Tom Evans writes: > >> > >>> You say this, have you actually measured/checked. sysutils/dmidecode > >>> will interrogate your BIOS and tell us what it thinks is installed in > >>> each RAM socket. It is not uncommon for RAM to say one thing on the > >>> outside, and report something completely different to the BIOS. > >> > >> I can only second Tom's call for a proper scientific approach to > >> debugging this issue, rather than just assume that it is the > >> operating systems fault. > >> > >> -- > >> Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > >> phk@FreeBSD.ORG | TCP/IP since RFC 956 > >> FreeBSD committer | BSD since 4.3-tahoe > >> Never attribute to malice what can adequately be explained by > incompetence. > >> > > > > > > I am a graduate of Operations Research and Statistics option of a > > Mathematics department . > > All of your considerations are considered . It is so much apparent that , > > the cause is FreeBSD . > > > > In my previous year message and in its subsequent messages , there are > > sufficiently detailed information . > > > > > > This message is caused from the following fact : > > > > In previous year case , KDE used was a cause , but FluxBox was working > fast > > . > > Now , I have installed 10.0 current . It does not have KDE in packages . > I > > have installed FluxBox . > > It is not a few second slow : Many minutes to start Firefox , and > activate > > a menu of it ! > > > > What is the point of measuring milliseconds when the difference is around > > many minutes ? > > > > PC-BSD installation ( it is a graphical installation after starting X ) > is > > taking many hours to reach 20 percent completion . > > The same is for GhostBSD : Start it at night , at the next morning , it > is > > likely that it is not finished yet . > > > > > > Then : WQhat will be measured ? > > > > Linux installations are around 30 minutes . > > Starting/Opening menus are instantenous : I do no have chronometer , but > > everything is within a second . > > > > > > Thank you very much . > > The problem is that "slow" doesn't mean anything. An incomplete list of > things it might be related to: > 1. Something to do with the way KDE is built (options, system compiler) > 2. A disk I/O issue > 3. A memory speed issue > 4. Some other process using CPU that isn't running on Linux > 5. A scheduler issue triggered by some property of the machine > > Doing some of these smaller tests will help pin down which of these are > causing the problem. Without that, there's no possibility to even start > debugging. Even just running top and seeing whether you are spinning in > a user thread, in the kernel, or waiting while the slow things are > happening would be extremely helpful. > -Nathan > _______________________________________________ > > In the following messages , there are some values for possible combinations on two identical main boards with 2 and 4 core processors : http://lists.freebsd.org/pipermail/freebsd-current/2012-February/031836.html http://lists.freebsd.org/pipermail/freebsd-current/2012-February/031912.html http://lists.freebsd.org/pipermail/freebsd-current/2012-February/031928.html http://lists.freebsd.org/pipermail/freebsd-current/2012-February/032012.html FreeBSD 9.1 Stable ( 2013-03-09 ) top in console mode : Load averages : 0.22 0.53 0.28 33 processes , 1 running , 32 sleeping CPU : 1.5 ... 3.5 % user 0.0 % nice 0.6 .. 1.5 % system 0.0 ... 0.4 interrupt ~ 0.95 % idle top in X + FluxBox : Load averages : 0.22 0.53 0.28 xterm ( top ) xterm ( Firefox ) 44 processes , 1 running , 43 sleeping CPU : 1.5 ... 3.5 % user 0.0 % nice 0.0 .. 1.5 % system 0.0 ... 0.4 interrupt ~ 0.96 % idle When there is no user activity : Sometimes % user is increasing , % idle decreasing . When anything clicked in Firefox % user increasing , % idle decreasing . Response is slow ( to open a menu sometimes reaching to minute ) . Closing a menu is taking many seconds . Thank you very much . Mehmet Erol Sanliturk