[CentOS] Kernel Errors Present...

[Keith Roberts]

On Wed, 12 Jan 2011, John R Pierce wrote:

> To: centos at centos.org
> From: John R Pierce <pierce at hogranch.com>
> Subject: Re: [CentOS] Kernel Errors Present...
> 
>
>> In the BIOS I turn DMA off for /dev/hda and /dev/hdc,
>> but they still show up in /proc/ide/.../settings as
>> using_dma 1.
>
>
> say HUH?    IDE PIO modes are like 3-7 MBytes/sec and require 100% CPU
> utilization during the transfer phase.   why in dogs name would you be
> doing this in 2011 ?

I'm only using 40 wire IDE cables, and from past experience 
I don't trust DMA 100%

I'd rather transfer data slower with hopefully more 
stability.

I will build a new machine at some time, using SATA and 
possibly PCI express.

But this will have to do for now :)

Keith

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