Hi list, I have got an interesting problem here. When I use a CF card on Geode LX-800 board, the performance is extremely low (about 1MB/s for reading). I suppose it is not a hardware problem: Under windows, the performance of read/writes on the CF is fine.
This is what I get in dmesg: pciide0 at pci0 dev 15 function 2 "AMD CS5536 IDE" rev 0x01: DMA, channel 0 wired to compatibility, channel 1 wired to compatibility wd0 at pciide0 channel 0 drive 0: <Turbo Industrial CF Card> wd0: 1-sector PIO, LBA, 1983MB, 4062240 sectors wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 pciide0: channel 1 ignored (disabled) (Using a more or less standard 4.1 - kernel) so I guess the kernel is recognizing the controller OK. If I use a "standard" harddisk under OpenBSD, the performance is fine, too. (I do not have the according dmesg for this, but I can get one if that helps) The same behaviour occurs with other boards (for example the new ALIX board from pcengines). Any ideas?
