From owner-freebsd-current@FreeBSD.ORG Fri Nov 21 08:37:13 2008 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id CDF931065672 for ; Fri, 21 Nov 2008 08:37:13 +0000 (UTC) (envelope-from ndenev@gmail.com) Received: from fk-out-0910.google.com (fk-out-0910.google.com [209.85.128.190]) by mx1.freebsd.org (Postfix) with ESMTP id 5989C8FC1E for ; Fri, 21 Nov 2008 08:37:13 +0000 (UTC) (envelope-from ndenev@gmail.com) Received: by fk-out-0910.google.com with SMTP id k31so925271fkk.11 for ; Fri, 21 Nov 2008 00:37:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:from:to :in-reply-to:content-type:content-transfer-encoding:mime-version :subject:date:references:x-pgp-agent:x-mailer; bh=e6saBavlnlMZ1bGr2+tS/yXGBzSlhjDn7ifaJPO3was=; b=a7HmVK7UkYM6Gvw4mQJP2i8qRfGjL2WHmTxzTUwUF1yvVXgZFEJecSJG29gQCp2jiE 8ovB/2IKDbGVSZQqrRn02ouYj9lD+mvS21yZtsAUuDYEg5U6NlD0XpSgazhpyLDCU4c7 GDs2AlkLVvm237efdTseWxMVCV+JiBTEMXmuE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:from:to:in-reply-to:content-type :content-transfer-encoding:mime-version:subject:date:references :x-pgp-agent:x-mailer; b=Kzj0RCfSHkad7i2TKFI0Mf5jl6zVkWX2tcKROfxskY9QRrI0y6J3v2pYjJzMQcCadi Lal2lLxBu2fS2AdgBZQimFG8vhM+5ZRL3NEy7HSTAl/gO5WULl1eIjFaYMyvn4tXAGPf f1LZnF9PyyFh4UwXT/hapZr9ftDGG5WNMO7qM= Received: by 10.187.182.10 with SMTP id j10mr38714fap.12.1227256632115; Fri, 21 Nov 2008 00:37:12 -0800 (PST) Received: from ndenev.cmotd.com (blah.sun-fish.com [217.18.249.150]) by mx.google.com with ESMTPS id 28sm2748529fkx.1.2008.11.21.00.37.07 (version=TLSv1/SSLv3 cipher=RC4-MD5); Fri, 21 Nov 2008 00:37:09 -0800 (PST) Message-Id: <29D6BF8D-6A05-4446-95FE-8F0AC0195C79@gmail.com> From: Nikolay Denev To: freebsd-current@freebsd.org In-Reply-To: <18E318DD-29FA-4E26-89CF-11B893B42E34@gmail.com> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v929.2) Date: Fri, 21 Nov 2008 10:37:04 +0200 References: <20081117205526.GC1733@garage.freebsd.pl> <8ECD400F-BFE3-4E31-94F0-39AF5F44FDAC@gmail.com> <20081119090307.GA81236@icarus.home.lan> <18E318DD-29FA-4E26-89CF-11B893B42E34@gmail.com> X-Pgp-Agent: GPGMail d53 (v53, Leopard) X-Mailer: Apple Mail (2.929.2) Subject: Re: HEADS UP: New ZFS in the tree. X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 21 Nov 2008 08:37:13 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 19 Nov, 2008, at 13:58 , Nikolay Denev wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > > On 19 Nov, 2008, at 11:48 , Nikolay Denev wrote: >> >> Well, it looks like that on -current and a 4G amd64 machine >> probably there is no need >> to tune anything. Here are my defaults with everything vm and zfs >> related in loader.conf commented : >> >> vm.kmem_size_max: 4509713203 >> vfs.zfs.arc_max: 863907840 >> > > I was able to panic it again with "kmem_map too small" with these > settings (defaults). > > This are the bonnie++ arguments that i've used: > bonnie++ -d /tank -c 4 -r 4096 -x 9999999 -u 0:0 > > With vfs.zfs.arc_max="512M" and nothing else the machine survived more than 20 hours of bonnie++ and "iozone -a" in parallel, and is still working. Definitely the stability has improved with the new version. But maybe the algorithm for automatically setting arc_max needs a little more tweaking? (if it's not hardcoded?) - -- Regards, Nikolay Denev -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (Darwin) iEYEARECAAYFAkkmczAACgkQHNAJ/fLbfrmCuACdFebPzWgigaivfOEzwXnL+2Qe 7EYAoL1KnVO7BqniD8kuZ9sPw498rILz =Yz6c -----END PGP SIGNATURE-----