From owner-freebsd-questions@FreeBSD.ORG Fri Aug 1 22:59:31 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 26D871065676 for ; Fri, 1 Aug 2008 22:59:31 +0000 (UTC) (envelope-from pcloches@gmail.com) Received: from wf-out-1314.google.com (wf-out-1314.google.com [209.85.200.171]) by mx1.freebsd.org (Postfix) with ESMTP id EAD678FC19 for ; Fri, 1 Aug 2008 22:59:30 +0000 (UTC) (envelope-from pcloches@gmail.com) Received: by wf-out-1314.google.com with SMTP id 24so1035979wfg.7 for ; Fri, 01 Aug 2008 15:59:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:cc:in-reply-to:mime-version:content-type :content-transfer-encoding:content-disposition:references; bh=WVUieoGUnFu67N7doReav9dLD4Jm/I3zBMhBFnIRiDU=; b=QookrckT/yjOQuBru8XICwzzgog673kz7vI6mXMVVpWaDvsJEzx6EGAARXQNrX6vmN vMXD1WHjYKRBZ/s99Ff8g+qy3QOJv1mab93nJlXyFZrS/GNMMrKEPmRDhYuJkGtdPNXw Uysrk4H9deYPflFzfKM/28Ig3TxijBLS0H1Qk= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=C3gSPrvbISXp1j0tudHtnm+Gsq26bHiJ6/xl2GjC58qjZCzdM8PEgKCqrQnZ8P7Xsy UHmJWvrO5l5GRfevwt/s4m2sk7XlpNyOocE/pbcMqVdGhrCOheXshwbknZZko00Tqu6K 0N82LOkvra7TyngmTz0O7hXX5rtXEUnkiIMW4= Received: by 10.142.43.7 with SMTP id q7mr3938133wfq.11.1217631570653; Fri, 01 Aug 2008 15:59:30 -0700 (PDT) Received: by 10.142.218.3 with HTTP; Fri, 1 Aug 2008 15:59:30 -0700 (PDT) Message-ID: <34394a3a0808011559u764842fdv4aad492d61d73faf@mail.gmail.com> Date: Fri, 1 Aug 2008 15:59:30 -0700 From: "Patrick C" To: "Wojciech Puchar" In-Reply-To: <20080610001335.E50875@wojtek.tensor.gdynia.pl> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <484D9C13.9090607@baylessfamily.org> <20080610001335.E50875@wojtek.tensor.gdynia.pl> Cc: Free BSD Questions list Subject: Re: Troubleshooting a 3Ware 9550SX under 6.3 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Aug 2008 22:59:31 -0000 This is a very important point. By turning the cache on, you have not resolved an underlying performance issue, if there even is one. Please try dd again with a well-sized bs= parameter, or use some more accurate reporting like iozone, sysbench, etc. Also, I am not sure how much memory is on the card, but that is likely COMPLETELY in cache at that point so you're not learning anything. Write a couple gigs to get some real numbers. -Patrick 2008/6/9 Wojciech Puchar : >> dd if=/dev/zero of=testfile >> 165760+0 records in >> 165759+0 records out >> 84868608 bytes transferred in 25.028232 secs (3390915 bytes/sec) > >> I think I ought to be able to get more than 3.2MB/sec out of this card, > > with default 512 bytes blocks - not much more > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" >