El Sábado, 8 de Marzo de 2008, Tejun Heo escribió: > Jose Alberto Reguero wrote: > >> I noticed that : > >> R/W multiple sector transfer: Max = 1 Current = 0 > >> > >> It is important? > > Nope, it's just for PIOs. > > > I did more tests. I put: > > > > options libata force=4:1.5g,udma0 > > > > and the ICRC errors still appear. But only writing. I try with the device > > at top speed(3G) and reading the errors don't appear. > > UDMA mode shouldn't affect anything unless the drive is actually PATA > bridged over SATA and configuring lower UDMA mode makes it transfer data > slower and changes transfer pattern on the link. > > > Another thing is that when limiting the speed to 1.5G, the real read > > speed don't seem to change and is about 2 times the read speed that I > > have with a SATA-I device. Is like limiting the speed to 1.5G don't do > > nothing. > > 1.5Gbps means 150Mbytes/s and harddrives are yet to reach such > performance level, so 1.5 or 3.0 doesn't really make any difference > performance-wise yet. > > > I will try the disk in a SATA-I port. > > Can you also give a shot at shorter cable? > > Thanks. I have a esata 1m cable. I don't have a shorter cable. I think I go to use only in usb mode, that appears to work well. Thanks. Jose Alberto -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
