On Tue, 28 Nov 2006 11:09:47 +0100 "Martin A. Fink" <[EMAIL PROTECTED]> wrote:
> Dear Alan, > > You wrote > > The PIIX interface needs CPU intervention each command, so in practice > > about every 64K or so, and the CPU gets stalled waiting for the disk > > during the setup of each I/O. The newer kernels support AHCI which does > > not have this overhead, but it is only present on the newest intel > > controllers. > > Can you tell me the name of these newest controllers? Is it ICH7 or 8 ? > What kernel versions? dmesg only shows ACPI and u/e/o hci_* host controller. > (kernel version is 2.6.8-24.25-smp). How can I switch to AHCI ? According to the docs ICH6 ICH6M ICH7 ICH7M ICH7R ESB2 ICH7-M DH ICH8 ICH8M These devices support both "legacy" and "ahci" modes of operation, usually controlled by a BIOS setting. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/