From owner-freebsd-hackers@FreeBSD.ORG Mon Mar 14 11:17:36 2011 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8B5A71065698 for ; Mon, 14 Mar 2011 11:17:36 +0000 (UTC) (envelope-from mats.w.lindberg@gmail.com) Received: from mail-iw0-f182.google.com (mail-iw0-f182.google.com [209.85.214.182]) by mx1.freebsd.org (Postfix) with ESMTP id 550B58FC16 for ; Mon, 14 Mar 2011 11:17:36 +0000 (UTC) Received: by iwn33 with SMTP id 33so5697386iwn.13 for ; Mon, 14 Mar 2011 04:17:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:date:message-id:subject:from:to :content-type; bh=SMqv1+QP4CT53pSvmDVRQ8v8gwQ9JtmoesZkr23bDhg=; b=q+SAFMh60fbbsFpoE3r+O/qQ/UH3TTKy7Hz8INoEkdTox5uwOxw/s4ozUE3an/dckZ Zb+J33+QLw/FcvWlrI0SYFEHU0Rld2k2nW8zljbye+dAo+pUX91vWjFYuwVQ3xKqeYTT /8r/vHvgkZxHmjX8ikJh23bbnXvwfynhKcS/M= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=XBONwER8AFTISpFL3EZ3MhgQ+a4eqG6zbiaZ+zX5VY6q6Y6usIDAwJYp43yAFLBg7S Zp5Z+rfs8t8+odidDXg09QSV8VfXnwPUNUGq62MsbOFMGOQ/kxNPG3isoo1c5nqg/TF6 jc/s3n3Q+Wz1xW+5MQGJyGYnxKkElwtlFi4EA= MIME-Version: 1.0 Received: by 10.42.141.197 with SMTP id p5mr85117icu.141.1300101455662; Mon, 14 Mar 2011 04:17:35 -0700 (PDT) Received: by 10.231.165.149 with HTTP; Mon, 14 Mar 2011 04:17:35 -0700 (PDT) Date: Mon, 14 Mar 2011 12:17:35 +0100 Message-ID: From: Mats Lindberg To: freebsd-hackers@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: FreeBSD 6 vs 8.1 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Mar 2011 11:17:36 -0000 All I am migrating from FreeBSD 6.3 to FreeBSD 8.1 And I have noticed some, what I think is, strange behaviour. In FreeBSD 6.3 when I do > swapoff -a > dd if=/dev/zero of=/tmp/whatever bs=1G count=1 I get something like "out of memory - killed" In FreeBSD 8.1 doing the same - processes around start to die, e.g. all getty's are killed and finally devfs goes the same way. My target is diskless nfs mounted to a linux fileserver - hence no swap partition It does not seem to be relalted to the nfs root however - I get the same behaviour running FBSD-8.1 in a VMWARE server session. Is this a new 'feature' of FBSD or just a bug? Are there some sysctl's to set to 'really' turn of swapping. At one instance I also got a kernel panic saying 'page fault in kernel' but I'm having a hard time to repeat just that. regards Mats