From owner-freebsd-hackers@FreeBSD.ORG Sat Jan 19 03:11:59 2013 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id EDE7E567; Sat, 19 Jan 2013 03:11:59 +0000 (UTC) (envelope-from dieterbsd@gmail.com) Received: from mail-ie0-f178.google.com (mail-ie0-f178.google.com [209.85.223.178]) by mx1.freebsd.org (Postfix) with ESMTP id 868E77D5; Sat, 19 Jan 2013 03:11:59 +0000 (UTC) Received: by mail-ie0-f178.google.com with SMTP id c12so7089068ieb.23 for ; Fri, 18 Jan 2013 19:11:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:date:message-id:subject:from:to:cc :content-type; bh=Duinsy3+8whC5WfxHaKiVklysqaeST/YFPEi1PShfec=; b=cIRFzsEeTspTj3xr5eLSzDqF4fQkSkXY2DwNa978CZzHhDk5g98x34ZmRG7B7xm9oO Je9Z7Xx3YcQC/KaZLKlZu+lETAsj+5//AitEkZik1rO620Qmz9Dak5KCdv08iNmQPVdW gl9EWHLAq/HpzTS3SQD7dDXPugiTn+5IZunp7cwVnbC8PaxhRkML+jnpITP12C4klZXr yfcuAQ0TJiNIijxEv+wzqMzmgeZSzKilPrsA9y3f/gNzZ5FZr77aIfxTqT7sj+U9mlxd OvAs3GkeUO18Nf34skaxpXX0G/2q0M6KuqkKBDGHxzap5bu6Ys+mq15aACL+jetSx8J+ xREA== MIME-Version: 1.0 X-Received: by 10.50.151.211 with SMTP id us19mr3844362igb.84.1358565113827; Fri, 18 Jan 2013 19:11:53 -0800 (PST) Received: by 10.64.107.196 with HTTP; Fri, 18 Jan 2013 19:11:53 -0800 (PST) Date: Fri, 18 Jan 2013 19:11:53 -0800 Message-ID: Subject: Re: IBM blade server abysmal disk write performances From: Dieter BSD To: freebsd-hackers@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 Cc: gibbs@FreeBSD.org, scottl@FreeBSD.org, mjacob@FreeBSD.org X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 19 Jan 2013 03:12:00 -0000 Matthew writes: > There is also no information in the original email as to which direction > the I/O was being sent. In one of the followups, Karim reported: # dd if=/dev/zero of=foo count=10 bs=1024000 10+0 records in 10+0 records out 10240000 bytes transferred in 19.615134 secs (522046 bytes/sec) 522 KB/s is pathetic.