Re: Linux on AMD K6

Andrea Arcangeli (
Fri, 11 Jul 1997 14:43:35 +0200 (CEST)

On Thu, 10 Jul 1997, linux kernel account wrote:

>On Thu, 10 Jul 1997, Christoph Lameter wrote:
>> In article <> you wrote:
>> : Vadim E. Kogan <> wrote:
>> : > 2. SCSI doesn't make big difference if you have enougth RAM
>> : The impact of IDE on a web server with enough RAM isn't latency
>> : or transfer rate -- it's cpu lossage. With a typical IDE setup,
>> : you can drop packets from this.
>> And that only happens if you have not configured the harddrive to either
>> A. Use DMA
>> B. allow interrupts during transfer (hdparm command)
>> IDE is faster and more stable than SCSI especially with modern motherboards.
> Try not to use absolutes, it indicates ignorance. Yes, in certian places
>IDE can be better.. But if you enable DMA on many current IDE drives you
>will risk corruption.. [..]

You not risk corruptions using DMA on IDE, the kernel use DMA as default
at boot (compiling the kernel with the Tritron Chipset support). You risk
HD corruption using -u flag of hdparm (but for me and all my friends works
fine :).

> [..]

Andrea Arcangeli