From owner-freebsd-current@FreeBSD.ORG Wed Dec 14 17:55:53 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 34EE01065679; Wed, 14 Dec 2011 17:55:53 +0000 (UTC) (envelope-from fidaj@ukr.net) Received: from fsm2.ukr.net (fsm2.ukr.net [195.214.192.121]) by mx1.freebsd.org (Postfix) with ESMTP id D3CA08FC17; Wed, 14 Dec 2011 17:55:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ukr.net; s=fsm; h=Content-Transfer-Encoding:Content-Type:Mime-Version:References:In-Reply-To:Message-ID:Subject:Cc:To:From:Date; bh=H5HuC6f1zLZn/iZE9rSzVBa6GimuIdr5WV8rZoyf9bw=; b=P0a5+C+QspdhOkFWZHN5MJx+rooqxJQlNCwltxzVAO88ay7bFsjjzeY2MqGt/+9YIJ/mC0vkLkMoFTbNcYNuJ3bKdvQo7vwgj/Xbngp+M2usczXPalskGQ2vzlbYNGVUVyptOud0DluvzMXe3sV+ttAaRd1sR8dQCWPYAdOAQCA=; Received: from [178.137.138.140] (helo=nonamehost.) by fsm2.ukr.net with esmtpsa ID 1Rat3X-000O37-NU ; Wed, 14 Dec 2011 19:55:51 +0200 Date: Wed, 14 Dec 2011 19:55:49 +0200 From: Ivan Klymenko To: Andrey Chernov Message-ID: <20111214195549.415196f0@nonamehost.> In-Reply-To: <20111214173435.GA41893@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> <20111214173435.GA41893@vniz.net> X-Mailer: Claws Mail 3.7.10 (GTK+ 2.24.6; amd64-portbld-freebsd10.0) Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Cc: Adrian Chadd , Doug Barton , freebsd-stable@FreeBSD.ORG, "O. Hartmann" , Current FreeBSD , freebsd-performance@FreeBSD.ORG 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: Wed, 14 Dec 2011 17:55:53 -0000 =D0=92 Wed, 14 Dec 2011 21:34:35 +0400 Andrey Chernov =D0=BF=D0=B8=D1=88=D0=B5=D1=82: > On Tue, Dec 13, 2011 at 02:22:48AM -0800, Adrian Chadd wrote: > > On 13 December 2011 01:00, Andrey Chernov wrote: > >=20 > > >> 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. > >=20 > > Are you able to provide KTR traces of the scheduler results? > > Something that can be fed to schedgraph? >=20 > Sorry, this machine is not mine anymore. I try SCHED_ULE on Core 2 > Duo instead and don't notice this effect, but it is overall pretty > fast comparing to that Pentium 4. >=20 Give me, please, detailed instructions on how to do it - I'll do it ... Be a shame if this the theme is will end again just only the discussions ... :(