From owner-freebsd-current@FreeBSD.ORG Wed Jul 6 14:59:11 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 66FF91065674 for ; Wed, 6 Jul 2011 14:59:11 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140]) by mx1.freebsd.org (Postfix) with ESMTP id 6B6C18FC08 for ; Wed, 6 Jul 2011 14:59:10 +0000 (UTC) Received: from odyssey.starpoint.kiev.ua (alpha-e.starpoint.kiev.ua [212.40.38.101]) by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id RAA01373; Wed, 06 Jul 2011 17:59:08 +0300 (EEST) (envelope-from avg@FreeBSD.org) Message-ID: <4E14783C.9030909@FreeBSD.org> Date: Wed, 06 Jul 2011 17:59:08 +0300 From: Andriy Gapon User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:5.0) Gecko/20110705 Thunderbird/5.0 MIME-Version: 1.0 To: Alexander Best References: <4E1421D9.7080808@zedat.fu-berlin.de> <20110706133337.GA89910@freebsd.org> In-Reply-To: <20110706133337.GA89910@freebsd.org> X-Enigmail-Version: 1.2pre Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: FreeBSD Current , arrowdodger <6yearold@gmail.com> Subject: Re: Heavy I/O blocks FreeBSD box for several seconds 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, 06 Jul 2011 14:59:11 -0000 on 06/07/2011 16:33 Alexander Best said the following: > you might also want to try enabling options IPI_PREEMPTION. no idea, if this > improves your situation, though. Just in case, this option has effect for 4BSD scheduler only. -- Andriy Gapon