From owner-freebsd-current@FreeBSD.ORG Sun Dec 18 02:37:54 2011 Return-Path: Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8B124106566C; Sun, 18 Dec 2011 02:37:54 +0000 (UTC) (envelope-from bruce@cran.org.uk) Received: from muon.cran.org.uk (muon.cran.org.uk [IPv6:2a01:348:0:15:5d59:5c40:0:1]) by mx1.freebsd.org (Postfix) with ESMTP id 1B56E8FC12; Sun, 18 Dec 2011 02:37:54 +0000 (UTC) Received: from muon.cran.org.uk (localhost [127.0.0.1]) by muon.cran.org.uk (Postfix) with ESMTP id 223BDE6217; Sun, 18 Dec 2011 02:37:53 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=cran.org.uk; h=message-id :date:from:mime-version:to:subject:references:in-reply-to :content-type:content-transfer-encoding; s=mail; bh=I57RAsWs1zbv so7bCeVdM/pSSpY=; b=b6xdib3FGaFnhcNsw3HKpuL4Frw9pbafcxRDLlUcF1dV LSQlIiGLb8icVSinnb31b5Y/4+uboqW3AV5yu0K+xR/EmzZqyzjNkgZn3Nypl3lh eRfxB0wmw2hfAUD/5fu8YgI9/UAqU9zBahZncIOTXnciT7/n2wvcJbPXhuEvUYA= DomainKey-Signature: a=rsa-sha1; c=nofws; d=cran.org.uk; h=message-id :date:from:mime-version:to:subject:references:in-reply-to :content-type:content-transfer-encoding; q=dns; s=mail; b=CKJuiw y+HKDldo71dYnwUmH4Sg61hlB5edwnD3fANdRZy6r6HaTq653wVIdL3t1LdL1zfn VWUgIvEAyYeEdSx9L/TYy7J9dmj0qSvuiXN4khsu6ZFZlIUAFnyvXXT/nyUSF+sX gTCE50iAGB2qWGMJqXKqHSnabClkPOMoFA7j4= Received: from [192.168.1.68] (188-220-36-32.zone11.bethere.co.uk [188.220.36.32]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by muon.cran.org.uk (Postfix) with ESMTPSA id CDA1BE6216; Sun, 18 Dec 2011 02:37:52 +0000 (GMT) Message-ID: <4EED5200.20302@cran.org.uk> Date: Sun, 18 Dec 2011 02:37:52 +0000 From: Bruce Cran User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0) Gecko/20111105 Thunderbird/8.0 MIME-Version: 1.0 To: Andrey Chernov , Ivan Klymenko , Doug Barton , "O. Hartmann" , Current FreeBSD , freebsd-stable@FreeBSD.ORG, freebsd-performance@FreeBSD.ORG References: <4EE1EAFE.3070408@m5p.com> <4EE22421.9060707@gmail.com> <4EE6060D.5060201@mail.zedat.fu-berlin.de> <4EE69C5A.3090005@FreeBSD.org> <20111213104048.40f3e3de@nonamehost.> <20111213090051.GA3339@vniz.net> In-Reply-To: <20111213090051.GA3339@vniz.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Subject: Re: SCHED_ULE should not be the default X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Sun, 18 Dec 2011 02:37:54 -0000 On 13/12/2011 09:00, Andrey Chernov wrote: > I observe ULE interactivity slowness even on single core machine > (Pentium 4) in very visible places, like 'ps ax' output stucks in the > middle by ~1 second. When I switch back to SHED_4BSD, all slowness is > gone. I'm also seeing problems with ULE on a dual-socket quad-core Xeon machine with 16 logical CPUs. If I run "tar xf somefile.tar" and "make -j16 buildworld" then logging into another console can take several seconds. Sometimes even the "Password:" prompt can take a couple of seconds to appear after typing my username. -- Bruce Cran