Date: Wed, 27 Feb 2002 10:31:26 -0700
From: "Jeff V. Merkey" <jmerkey@vger.timpanogas.org>
To: linux-kernel@vger.kernel.org, jmerkey@timpanogas.org
Subject: Re: 3Ware Hard Bus Hang 2.4.18 > 220 MB/S
Message-ID: <20020227103126.A31578@vger.timpanogas.org>
In-Reply-To: <20020227102545.B31524@vger.timpanogas.org>
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In-Reply-To: <20020227102545.B31524@vger.timpanogas.org>; from jmerkey@vger.timpanogas.org on Wed, Feb 27, 2002 at 10:25:45AM -0700
Sender: linux-kernel-owner@vger.kernel.org

On Wed, Feb 27, 2002 at 10:25:45AM -0700, Jeff V. Merkey wrote:
> 


More info.  I put in some trace code to determine how many io buffer
heads were being fed to each adapter.  When the number of bh's reaches
numbers above 4244+- buffer heads outstanding at one time, then I see the 
cards lockup.  

Jeff

> 
> 
> Running 4 3Ware 7810 Adapters with the updated 48 bit LBA firmware
> for the 78110, and attached to 8 Maxtor 160 GB hard disks on each card
> (32 drives total) striping Raid 0m across 5.6 terabytes of disk, I am
> seeing about 216-224 MB/S total throughput on writes to local 
> arrays on 2.4.18.  
> 
> The system is also running an Intel Gigabit Ethernet Card at 
> 116-122 MB/S with full network traffic and writing this traffic to 
> the 3Ware arrays.  All this hardware is running on a Serverworks 
> HE chipset with a SuperMicro motherboard and dual 933 Mhz PIII
> processors.
> 
> After running for about 3 hours, the system will hard hang and die.  
> Using debugging tools, I have isolated to the hang to the 3Ware 
> adapters.  If I remove all but a single 3Ware adapter, the system will
> run reliably for days at these data rates.  The moment I add more 
> than one 3Ware 7810 adapter, the system will lock up.  Recent testing
> reveals that the hang is in the 3Ware card itself (all the LEDs go 
> on at once and stay on).  Attempts by the system to reset the adapter
> fail until the system is power cycled.  
> 
> 3Ware dfriver version is .16 from the 2.4.18 tree.  Firmware is the 48 bit
> LBA version.  
> 
> Please advise.  
> 
> Jeff


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