From owner-freebsd-stable@FreeBSD.ORG Sat Apr 7 05:02:00 2012 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 251E81065672 for ; Sat, 7 Apr 2012 05:02:00 +0000 (UTC) (envelope-from matt.thyer@gmail.com) Received: from mail-we0-f182.google.com (mail-we0-f182.google.com [74.125.82.182]) by mx1.freebsd.org (Postfix) with ESMTP id A63658FC12 for ; Sat, 7 Apr 2012 05:01:59 +0000 (UTC) Received: by wern13 with SMTP id n13so2274855wer.13 for ; Fri, 06 Apr 2012 22:01:53 -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=ZbmmMpvo+q6e5OIBcuR36OT7sis4ThofEiWUJUUzGYM=; b=gw6f8Q8nC1D8dpxiYBdc449BeKL6p6DsEdTef8krUUpUeEn0AzTTXK5z5f42kKPA3n VoGzKgeTaB2HB3VZOkk4GSh6568yt4DkdINTKoD6hEJN8ChKvCia7oKy99YlYyv02Fd4 nY+wlma1ZHZncq6ABmfPKbO+ycVOazhETWUyOABrxL/E4X5HTMeF5m0/pzerWx2+AZXQ LRVlb33OLHYRnczwWX3BSJQCXdESvAhxhP1keFGMf9g2VHKr1aH/UVKFE/WVn2UE7WWx kzuoueeWVUJk7+qJIER6ZfCHkj5byZFMLAMkhmYx5iE2Pc59Z7SMEGn3eMNPBzP21qeA JS2w== MIME-Version: 1.0 Received: by 10.216.132.229 with SMTP id o79mr203486wei.64.1333774913139; Fri, 06 Apr 2012 22:01:53 -0700 (PDT) Received: by 10.216.190.219 with HTTP; Fri, 6 Apr 2012 22:01:53 -0700 (PDT) In-Reply-To: References: <4F6A67C0.7000909@sentex.net> <4F6B3B46.4060105@sentex.net> Date: Sat, 7 Apr 2012 14:31:53 +0930 Message-ID: From: Matt Thyer To: Freddie Cash Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 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: Sat, 07 Apr 2012 05:02:00 -0000 On 5 April 2012 01:18, Freddie Cash wrote: > 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. > > Sorry, that's what I meant to say but it now seems that the 157K interrupts per second is probably not due to the SuperMicro AOC-USAS2-L8i. Since moving the SATA 3 disk to the onboard Intel SATA 2 controller I'm no longer having that disk evicted from the raidz2 pool with write errors and I thought that the high interrupt rate issue had also been solved but it's back again. This is on 8-STABLE at revision 230921 (before the new driver hit 8-STABLE). So now I need to go back to trying to determine what the cause is. I'll stop posting in this thread as I don't think it's anything to do with either the old or new version of this driver.