Linda Walsh writes: > Mikael Pettersson wrote: > > Linda Walsh writes: > > > Robert Hancock wrote: > > > > Linda Walsh wrote: > > > >>>> read rate began falling; at 128k block-reads-at-a-time or larger, it > > > >>>> drops below 20MB/s (only on buffered SATA). > > > > > > But more importantly -- I notice a chronic error message associate > > > with this drive that may be causing some or all of the problem: > > > --- > > > ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 > > > ata1.00: port_status 0x20080000 > > > ata1.00: cmd c8/00:10:30:06:03/00:00:00:00:00/e0 tag 0 cdb 0x0 data 8192 in > > > res 50/00:00:3f:06:03/00:00:00:00:00/e0 Emask 0x2 (HSM violation) > > > ata1: limiting SATA link speed to 1.5 Gbps > > > > > > Looks like the Promise ASIC SG bug. Apply > > <http://user.it.uu.se/~mikpe/linux/patches/sata_promise/patch-sata_promise-1-asic-sg-bug-fix-v3-2.6.23> > > and let us know if things improve. > > > > /Mikael > > > --- > Yep! Hope that's making it into a patch soon or, at least 2.6.24. > Kernel buffered Good to hear that it solved this problem. The patch is in 2.6.24-rc2 and newer kernels, and will be sent to -stable for the 2.6.23 and 2.6.22 series. > I seem to remember reading about some problems with Promise SATA & ACPI. > Does this address that or is that a separate issue? (Am using no-acpi for sata_promise does nothing ACPI-related. It doesn't need to. (Drives may be a different story.) > Is the above bug mentioned/discussed in the linux-ide archives? Yes. > That > and I'd like to find out why TCQ/NCQ doesn't work with the Seagate drives -- The driver doesn't yet support NCQ. - 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
