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 ----------------------------------------------------------------- Websites: http://www.karsites.net http://www.php-debuggers.net http://www.raised-from-the-dead.org.uk All email addresses are challenge-response protected with TMDA [http://tmda.net] -----------------------------------------------------------------