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    SubjectRe: libata/sata_nv latency on NVIDIA CK804 [was Re: AMD64 X2 lost ticks on PM timer]
    On Wed, Mar 15, 2006 at 05:50:37PM -0500, Jeff Garzik wrote:
    > Alas, it is far from that simple :(
    > The code I linked to isn't in a working state. NV contributed it
    > largely as "it worked at one time" documentation of a
    > previously-undocumented register interface.
    > Someone needs to debug it.

    Errrr, guess that would me me. Looks like a few interfaces have changed.
    I'll put some time in to see whether I can get it to compile and boot.
    If it's just a sata_nv issue, the easier solution is to buy a 3ware or
    Areca card ... but I'll take a shot at anyway.

    [Meanwhile, I still have to switch contexts and look at the long softirq
    latencies that at first glance appear to be due to the use of mempool
    by the RAID1 bio code.]


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