On Mon, 2003-07-28 at 11:34, Lyle Chapman wrote: > Sorry one more question to annoy everybody with, I have installed a new > 80gb seagate drive and the problem is when I copy something to or from > it I am getting a woeful 3 mb/sec transfer speed. > > I ran hdparm -Tt /dev/hda and the result was the cache access was > reporting the right speed but disk access was 3.5meg/sec (pathetic) > > I ran hdparm again and turned all the go faster bits on, this increased > it to 5.5 meg/sec. > > Although I did notice that I get a DMA error in hdparm when trying to > turn DMA on. > > Any ideas anyone, thanks? > I have just fixed this on my Mandrake 9.1 system (kernel 2.4.21). It ended up that I had to add my drive's model number (ST360015A) to the drive_whitelist in /usr/src/linux/drivers/ide/ide-dma.c and recompile the kernel (after checking that it wasn't in the drive_blacklist or bad_dma_drives list for good reason).
All is well with DMA now. Hope it works for you. Cheers, John... -- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
