It seems Justin W. Pauler wrote:
> I've heard tell that there are problems with the VIA chipset and UDMA on 
> FreeBSD. Is this true, and if so, what is the problem with?

Hmm, there are no open problems as far as I'm aware...

> FreeBSD 4.2-STABLE #0: Fri Dec  8 01:52:44 EST 2000 
> CPU: Pentium III/Pentium III Xeon/Celeron (601.37-MHz 686-class CPU)
>   Origin = "GenuineIntel"  Id = 0x683  Stepping = 3
> atapci0: <VIA 82C686 ATA66 controller> port 0xe000-0xe00f at device 7.1 on 
> pci0
> ata0: at 0x1f0 irq 14 on atapci0
> ata1: at 0x170 irq 15 on atapci0                    
> ad0: 19546MB <FUJITSU MPF3204AT> [39714/16/63] at ata0-master UDMA66     
> The drive has enough space and I have 512MB RAM. If I hit the system hard, 
> lets say, rm -rf /usr/ports, the system locks up. It doesn't just stop 
> responding for a little bit. It locks up tight. It kills all network 
> connections, doesn't respond to the console and doesn't respond to any 
> network activity. A hard reboot is the only thing that can bring it back to 
> life. 
> One time, someone was able to see the console when this happened, and they 
> said something about a page fault. Trying to solve this, we ordered two brand 
> new 256MB modules and installed them. It is still happening.
> This is a production environment type of server. I've had no other problems 
> with FreeBSD 4.2-S, and i'm hoping maybe this is something that has been 
> fixed.

Hmm, my main devbox is based on the VIA '686 although with an athlon
CPU, and there is no problems at all with it. I also dont belive that
this is the disk drivers fault, as in almost all cases you would get
error messages en-masse from the ATA driver.... 


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