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Date:      Mon, 8 Nov 2004 15:31:56 -0800
From:      "Vinod Kashyap" <vkashyap@amcc.com>
To:        "Michael R. Wayne" <amd64@wayne47.com>, freebsd-amd64@freebsd.org
Subject:   RE: How to debug >2GB memory issues (and 3ware)
Message-ID:  <I6VW1I00.TN1@hadar.amcc.com>

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> -----Original Message-----
> From: owner-freebsd-amd64@freebsd.org
> [mailto:owner-freebsd-amd64@freebsd.org]On Behalf Of Michael R. Wayne
> Sent: Monday, November 08, 2004 11:20 AM
> To: freebsd-amd64@freebsd.org
> Subject: How to debug >2GB memory issues (and 3ware)
> =

> =

> I have a Dual 4GB system with a 3ware SATA controller that's working
> properly as long as I restrict it to 2GB with:
>    hw.physmem=3D2G
> =


The 3ware driver (twe) for 7xxx/8xxx controllers can handle upto
4 GB memory on FreeBSD 4.x, and beyond 4 GB on FreeBSD 5.x.  The
driver (twa) for 9xxx controllers can handle memory beyond 4 GB
on both 4.x and 5.x.


> Obviously, I'd like to have access to the other 2GB of RAM.  But
> if I go past 2GB, I get random crashes during all builds (world,
> kernel, port).
> =

> Is there anything I can do to try to debug this or are there any
> tricks to either debug or solve this?
> =

> Oh, and is there any support at all for finding out the 3ware status?
> It would be nice to know if a drive fails but 3dm is marked i386 only.
> =


Currently, there's no CLI/3DM available for FreeBSD amd64.


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