Date: Tue, 25 Dec 2007 07:27:49 +0200 From: Kostik Belousov <kostikbel@gmail.com> To: Mark Fullmer <maf@splintered.net> Cc: freebsd-net@freebsd.org, freebsd-stable@freebsd.org Subject: Re: Packet loss every 30.999 seconds Message-ID: <20071225052749.GE57756@deviant.kiev.zoral.com.ua> In-Reply-To: <833223E8-B1ED-4358-A992-F3789E4B3070@splintered.net> References: <20071221234347.GS25053@tnn.dglawrence.com> <MDEHLPKNGKAHNMBLJOLKMEKLJAAC.davids@webmaster.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>
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--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--
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