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 ?
Thank you very much,
Martin
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