I will do the tests with another drive (from WD) today. But I've fogot to say that I have another S8005 m/b with SP5100 that working perfectly with these particular Hitachi drives (please see boot log for it in dmesg-good at the same URL). So the problem can be in init procedure for AMD south bridge or SATA controller. The differences between m/b is very little - working has onboard audio, not working hasn't. The diff in boot log is present too in file diff.txt >> I'm observing the problem with AMD SP5100 SATA controller. The >> problem appears as very low (2-3MB/s) write perfomance. Reading drops >> too, but not such dramatically (from 100Mb/s on other hardware to >> 50-60Mb/s on SP5100). This problem is checked on several kernels >> (2.6.x, 3.2.x, 3.4.x) including latest 3.5 and with all possible SATA >> BIOS settings. The hardware is Tyan S8005 m/b (latest BIOS v1.03), AMD >> X6 1045T, 8GB ECC memory and Hitachi HTS725050A7E630 drive. Moreover >> - I've checked 2 different identical boxes - it is 100% reproducable >> on both. > > Have you tried doing the same test on the same mobo but with another > drive, possibly by another manufacturer? Do you see the same write > slowdown with the second drive too? > > Thanks. > > -- > Regards/Gruss, > Boris. -- Rus -- 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
