From owner-freebsd-fs@FreeBSD.ORG Fri Sep 17 05:39:06 2010 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id EED731065670 for ; Fri, 17 Sep 2010 05:39:06 +0000 (UTC) (envelope-from gvidals@gmail.com) Received: from mail-bw0-f54.google.com (mail-bw0-f54.google.com [209.85.214.54]) by mx1.freebsd.org (Postfix) with ESMTP id 800A98FC12 for ; Fri, 17 Sep 2010 05:39:06 +0000 (UTC) Received: by bwz15 with SMTP id 15so2961247bwz.13 for ; Thu, 16 Sep 2010 22:39:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:reply-to:date :message-id:subject:from:to:content-type; bh=1pUSxqiOrFf0PuXAhgzsEfhp8Nc/HRV99WdEQSgM+O8=; b=u/+GMK5dXapVijuhQJRxMgfo6d53ODND2SxQ18I3bZwlcsh4otChjI9kAxVp/uyGfX wyV/FldH3mVvMSIQjfFHgLDvY/NvaIlljQj2R+AR8XQJuMZSyalZFb+/mPMI9EQ9H8/u qcTI5+h8c61njhl3NIIpDXmATawMEUL7Q9uno= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:reply-to:date:message-id:subject:from:to:content-type; b=q5QHUDkzkHwBlkUoY2j8QrDEG6h59omoBz2jvXbP5DG3jqbvTuViIUo/KdpGN6O68Z f6S5z2hEnqlcl67giI0W0wYSkq+zCBVBc09aRtM6B6R+lBnOIzdTQIbex/OFPA+757un 89ubY3bDZOUuCMrNuM5PBHzFJRUCM0cyPYbOc= MIME-Version: 1.0 Received: by 10.239.136.72 with SMTP id g8mr194674hbg.191.1284701945116; Thu, 16 Sep 2010 22:39:05 -0700 (PDT) Received: by 10.239.153.75 with HTTP; Thu, 16 Sep 2010 22:39:05 -0700 (PDT) Date: Thu, 16 Sep 2010 22:39:05 -0700 Message-ID: From: Gil Vidals To: freebsd-fs@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: vm.kmem_size for stability to avoid kernel panics? X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: gil@vidals.net List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 17 Sep 2010 05:39:07 -0000 The ZFS Tuning guide says that no tuning may be necessary on servers with 2+ GB of RAM. *"FreeBSD 7.2+ has improved kernel memory allocation strategy and no tuning may be necessary on systems with more than 2 GB of RAM."* However, is it advisable to put an upper limit for these two parameters to ensure stability and avoid kernel panics? vm.kmem_size vm.kmem_size_max Thank you. Gil Vidals / VMRacks.com