From owner-freebsd-stable@FreeBSD.ORG Wed Apr 4 15:48:44 2012 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 2A87E106566C for ; Wed, 4 Apr 2012 15:48:44 +0000 (UTC) (envelope-from fjwcash@gmail.com) Received: from mail-vb0-f54.google.com (mail-vb0-f54.google.com [209.85.212.54]) by mx1.freebsd.org (Postfix) with ESMTP id CBBC48FC0C for ; Wed, 4 Apr 2012 15:48:43 +0000 (UTC) Received: by vbmv11 with SMTP id v11so372369vbm.13 for ; Wed, 04 Apr 2012 08:48:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=/y0JFRVekYYqjgfOoU5gLv2KKLYwgxNrRXYdoyqiFgY=; b=DexFxp9ArrEzZnLnW4YyGKJmOojIp2MfNLlB1x1k3ZVGSV9G1gPynU9QaP78Y7VOGm dj+ufzsn+ZNY4PpUOZeOvez0Rdwu2pDnbN9ZlNyw8H2Boc4g5y1m9d0gmQO7DEnX2Zv2 FCXx0EVwHkMV1S84WSJ5A6IMJSxNeld4B0oEaeL2Qa+SVvKI0aX3YqM86LG/FRQkBf6T VN8obqzjOuMq1V0MGDuXBLJTPOgCXr8MoPFBscFpe9+8JAvQ2V2eubQwT1xY1GbsPBRu xxrqbtcI4GCBGDBGeBfWOSOcXX9J3g5ze1ezxamefA7OxESwvJa9+5G1rMfEPHPzV/oI KWRQ== MIME-Version: 1.0 Received: by 10.52.22.74 with SMTP id b10mr6834730vdf.47.1333554523115; Wed, 04 Apr 2012 08:48:43 -0700 (PDT) Received: by 10.220.180.198 with HTTP; Wed, 4 Apr 2012 08:48:42 -0700 (PDT) In-Reply-To: References: <4F6A67C0.7000909@sentex.net> <4F6B3B46.4060105@sentex.net> Date: Wed, 4 Apr 2012 08:48:42 -0700 Message-ID: From: Freddie Cash To: Matt Thyer Content-Type: text/plain; charset=UTF-8 Cc: freebsd-stable@freebsd.org Subject: Re: 157k interrupts per second causing 60% CPU load on idle system X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 Apr 2012 15:48:44 -0000 On Wed, Apr 4, 2012 at 5:19 AM, Matt Thyer wrote: > So it seems that both the old and new mps driver have a problem with the > Western Digital WD20EARX SATA 3 drive on a SuperMicro AOC-USAS2-L8i (SAS > 6G) controller (flashed with -IT firmware). I wouldn't say the driver has a problem with that specific drive. More that it might have a problem with a mixed SATA2/SATA3 setup. I have a 9-STABLE box with 24x WDC WD2002FAEX SATA3 (6 Gbps) drives attached to 3 SuperMicro AOC-USAS2-8Li controllers, using the new mps(4) driver without any issues. Was actually amazed yesterday when I say it doing writes just shy of 500 MBps to the ZFS pool, via zfs send/recv from another box. No issues with excessive interrupts. Using 10.0 firmware on the controllers. -- Freddie Cash fjwcash@gmail.com