I have upgraded from 2.4.19 to 2.4.22-r4 on one machine and 2.6.1 on another.
In both cases hdparm returns this: elrsr-0 root # hdparm -d1 /dev/hda /dev/hda: setting using_dma to 1 (on) HDIO_SET_DMA failed: Operation not permitted using_dma = 0 (off) Kernel options are (2.4.22): x x <*> Enhanced IDE/MFM/RLL disk/cdrom/tape/floppy support x x x x <*> Include IDE/ATA-2 DISK support x x x x [*] Use multi-mode by default x x x x <*> Include IDE/ATAPI CDROM support x x x x [*] PCI IDE chipset support x x x x [ ] Generic PCI IDE Chipset Support x x x x [*] Sharing PCI IDE interrupts support x x x x [*] Generic PCI bus-master DMA support x x x x [ ] Boot off-board chipsets first support x x x x [ ] Force enable legacy 2.0.X HOSTS to use DMA x x x x [*] Use PCI DMA by default when available x x x x [ ] Enable DMA only for disks >From the performance I am getting it definitely isn't enabled. Options on the 2.6.1 kernel are set in a similar way. Any suggestions greatly appreciated. Thanks, Richard -- [EMAIL PROTECTED] mailing list
