Date: Wed, 10 Jan 2007 01:23:45 +0800 From: LI Xin <delphij@delphij.net> To: "Bruce A. Mah" <bmah@freebsd.org> Cc: peter@holm.cc, Thomas Herrlin <junics-fbsdstable@atlantis.maniacs.se>, Ken Smith <kensmith@cse.Buffalo.EDU>, freebsd-stable@freebsd.org Subject: Re: FreeBSD 6.2-RC2 Available - networking zoneli freeze problem still exist. Message-ID: <45A3CFA1.60606@delphij.net> In-Reply-To: <45A3BB4E.3@freebsd.org> References: <1167247246.96863.23.camel@opus.cse.buffalo.edu> <4593DC34.2030308@atlantis.maniacs.se> <1167320870.52842.20.camel@opus.cse.buffalo.edu> <4593E790.8080509@delphij.net> <45A3BB4E.3@freebsd.org>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig8230295EDD2D234F96411AF0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Bruce A. Mah wrote: > If memory serves me right, LI Xin wrote: >> Ken Smith wrote: >>> On Thu, 2006-12-28 at 16:01 +0100, Thomas Herrlin wrote: >>>> It still runs networking daemons into a frozen zoneli state on >>>> heavy/(D)DOS network loads. Such processes cant be kill-9ed so there= is >>>> no way to recover from it. (think frozen sshd and a very remote/head= less >>>> server). >>>> See the stress test panic called 'Ran out of "128 Bucket" >>>> <http://people.FreeBSD.org/%7Epho/stress/log/cons210.html>' on the 6= =2E2 >>>> todo list and my own latest test here: >>>> http://www.maniacs.se/~junics/temp/vmstat-z.txt >>>> This test was on a new 6.2-RC2 install with no zone limit tweaks nor= any >>>> sbsize limits in /etc/login.conf. >>>> I just made a vm disk image with replication instructions, however P= eter >>>> Holm have replicated it with his own tools so i have not bothered wi= th >>>> it until now.=20 >>> That problem is being worked on but won't be fixed for 6.2-REL. >>> Depending on how complex the fix winds up being it may be an Errata >>> candidate when the time comes. >> Perhaps we should mention some known workarounds in the errata >> documentation. E.g. raising nmbclusters limit, etc.? >=20 > That's a good idea. Do you have more specifics (e.g. any particular > nmbclusters value, other workarounds, etc.)? The current workaround is that set the following in /boot/loader.conf: kern.ipc.nmbclusters=3D"0" And reboot; Note that this is not perfect as it can lead to the need of increasing KVA space under certain load. Cheers, --=20 Xin LI <delphij@delphij.net> http://www.delphij.net/ FreeBSD - The Power to Serve! --------------enig8230295EDD2D234F96411AF0 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFo8+hOfuToMruuMARA0UVAJ9jkV+OpXH7kVSWUqt0rmcWW15T5gCfWPmW nZOMOXom/Ezaz1XKV3Np0J0= =YQLa -----END PGP SIGNATURE----- --------------enig8230295EDD2D234F96411AF0--
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