From owner-freebsd-current@FreeBSD.ORG Tue Dec 13 10:22:49 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 A121F1065672; Tue, 13 Dec 2011 10:22:49 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-vx0-f182.google.com (mail-vx0-f182.google.com [209.85.220.182]) by mx1.freebsd.org (Postfix) with ESMTP id 0A0828FC17; Tue, 13 Dec 2011 10:22:48 +0000 (UTC) Received: by vcbfk1 with SMTP id fk1so7670449vcb.13 for ; Tue, 13 Dec 2011 02:22:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type; bh=ZX6KqOeJ20evUcl6Cqd6lqgE4dxILwyIbQ+sbvlpRng=; b=b+if3omSbxdzMRidkCt2TljuSzNNZXoCMYHDOhRUqjArbxZChUgwSBPgUDyAXayK3l vm2mZh0iQVBnmIV7x3GBxWJIcbRmuvH4N/a12Bcy+nSeYAIL2Rf56pEYgNlSX71d7p8E rjngzQjC5WO5c3vdJWVU8Hlj4onsk3Kb7JUOE= MIME-Version: 1.0 Received: by 10.220.230.67 with SMTP id jl3mr1004355vcb.60.1323771768334; Tue, 13 Dec 2011 02:22:48 -0800 (PST) Sender: adrian.chadd@gmail.com Received: by 10.52.26.50 with HTTP; Tue, 13 Dec 2011 02:22:48 -0800 (PST) In-Reply-To: <20111213090051.GA3339@vniz.net> 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> Date: Tue, 13 Dec 2011 02:22:48 -0800 X-Google-Sender-Auth: Z0I2tEWuW7JTpBYJ2eEndqbOV5U Message-ID: From: Adrian Chadd To: Andrey Chernov , Ivan Klymenko , Doug Barton , "O. Hartmann" , Current FreeBSD , freebsd-stable@freebsd.org, freebsd-performance@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 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: Tue, 13 Dec 2011 10:22:49 -0000 On 13 December 2011 01:00, Andrey Chernov wrote: >> If the algorithm ULE does not contain problems - it means the problem >> has Core2Duo, or in a piece of code that uses the ULE scheduler. > > 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. Are you able to provide KTR traces of the scheduler results? Something that can be fed to schedgraph? Adrian