From owner-freebsd-net@FreeBSD.ORG Tue Dec 25 05:27:56 2007 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9D6F316A419; Tue, 25 Dec 2007 05:27:56 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from relay02.kiev.sovam.com (relay02.kiev.sovam.com [62.64.120.197]) by mx1.freebsd.org (Postfix) with ESMTP id 50E3A13C4D9; Tue, 25 Dec 2007 05:27:56 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from [212.82.216.226] (helo=deviant.kiev.zoral.com.ua) by relay02.kiev.sovam.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.67) (envelope-from ) id 1J72KW-0003Rc-O5; Tue, 25 Dec 2007 07:27:55 +0200 Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.2/8.14.2) with ESMTP id lBP5RnJ7004058; Tue, 25 Dec 2007 07:27:49 +0200 (EET) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.2/8.14.2/Submit) id lBP5Rnba004057; Tue, 25 Dec 2007 07:27:49 +0200 (EET) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Tue, 25 Dec 2007 07:27:49 +0200 From: Kostik Belousov To: Mark Fullmer Message-ID: <20071225052749.GE57756@deviant.kiev.zoral.com.ua> References: <20071221234347.GS25053@tnn.dglawrence.com> <20071222050743.GP57756@deviant.kiev.zoral.com.ua> <20071223032944.G48303@delplex.bde.org> <20071222201613.GX57756@deviant.kiev.zoral.com.ua> <20071223095314.G1323@delplex.bde.org> <20071224131906.GB57756@deviant.kiev.zoral.com.ua> <833223E8-B1ED-4358-A992-F3789E4B3070@splintered.net> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="wwSkEpePV3aFlXly" Content-Disposition: inline In-Reply-To: <833223E8-B1ED-4358-A992-F3789E4B3070@splintered.net> User-Agent: Mutt/1.4.2.3i X-Scanner-Signature: bb9f355b5be917825c280d06cf0e20ab X-DrWeb-checked: yes X-SpamTest-Envelope-From: kostikbel@gmail.com X-SpamTest-Group-ID: 00000000 X-SpamTest-Info: Profiles 1960 [Dec 24 2007] X-SpamTest-Info: helo_type=3 X-SpamTest-Info: {received from trusted relay: not dialup} X-SpamTest-Method: none X-SpamTest-Method: Local Lists X-SpamTest-Rate: 0 X-SpamTest-Status: Not detected X-SpamTest-Status-Extended: not_detected X-SpamTest-Version: SMTP-Filter Version 3.0.0 [0255], KAS30/Release Cc: freebsd-net@freebsd.org, freebsd-stable@freebsd.org Subject: Re: Packet loss every 30.999 seconds X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 25 Dec 2007 05:27:56 -0000 --wwSkEpePV3aFlXly Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Dec 24, 2007 at 08:16:50PM -0500, Mark Fullmer wrote: >=20 > On Dec 24, 2007, at 8:19 AM, Kostik Belousov wrote: >=20 > > > >Mark, could you, please, retest the patch below in your setup ? > >I want to put a change or some edition of it into the 7.0 release, and > >we need to move fast to do this. >=20 > It's building now. The testing will run overnight. >=20 > Your patch to ffs_sync() and vfs_msync() stopped the periodic packet =20 > loss, > but other file system activity such as (cd /; tar -cf - .) > /dev/=20 > null will > cause dropped packets. Same behavior, packets never make it up to the > IP layer. What fs do you use ? If FFS, are softupdates turned on ? Please, show the total time spent in the softdepflush process. Also, try to add the FULL_PREEMPTION kernel config option and report whether it helps. --wwSkEpePV3aFlXly Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) iD8DBQFHcJTUC3+MBN1Mb4gRAp8rAJ48R0XeTKFoQjBv9GihgvneGikMgQCeMACM VWaDAdA/fUzq+OtvQA7tdY0= =pqDG -----END PGP SIGNATURE----- --wwSkEpePV3aFlXly--