On Thursday 22 Jan 2004 13:26, Mark Knecht wrote: > On Thu, 2004-01-22 at 04:39, Peter Ruskin wrote: > > On Thursday 22 Jan 2004 04:05, Mark Knecht wrote: > > > QUESTION: how do I test these devices (cdrw and dvdr drives) to > > > ensure DMA is still enabled? I cannot figure out yet what > > > parameters to give hdparm -I /dev/WHAT? > > > > > > Wizard root # hdparm -I /dev/cdroms/cdrom0 > > > /dev/cdroms/cdrom0 not supported by hdparm > > > > If you're using ide-scsi those devices are not supported by hdparm. > > (Someone tell me if I'm wrong). > > Right. That's what I see. So my question is that we know the devices > are attached to an IDE controller and we want to determine whether > DMA is enabled for the IDE controller. How do we do it? > > 1) Some different program *like* hdparm that tells us? > > 2) Run some sort of benchmark that shows us? > > 3) Something else? > > Of course, you've sort of shown me that I might not need SCSI > emulation anyway, but I'm not sure which way to go and why just yet, > so I'd like to know how to make DMA is enabled in the channel. > I googled some time back for a solution to this, tried a few suggestions, none of which worked. As far as I can see, if you're using scsi emulation you can forget about DMA.
Peter -- ====================================================================== Gentoo Linux: Portage 2.0.49-r20 kernel-2.6.1-gentoo-w4l i686 AMD Athlon(tm) XP 3200+ KDE: 3.1.5 Qt: 3.2.3 gcc(GCC): 3.2.3 ====================================================================== -- [EMAIL PROTECTED] mailing list
