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    SubjectRe: 2.6.0-test9 /-mm3 SATA siimage - bad disk performance
    Prakash K. Cheemplavam wrote:

    > I have a similar problem: With 2.4.22-ac3 I had 37mb/sec with my Samsung
    > HD and 49MB/sec with IBM/Hitachi, now with 2.6 (all I tried, including
    > test9-mm2) I had only 20mb/sec for Samsung and about 39mb/sec for the
    > IBM. Motherboard is Abit NF7-S Rev2.0, as well, so same situation with
    > the siimage 1.06 driver. I wanted to run some dd tests as well, but it
    > is a real performance hit. Playing with readahead or other hdparm
    > options didn't help either.

    I get a tip from Mark Hahn to set the pci latency to 64. And wow, with
    fedora 2.4.22 kernel I get then 41MB/sec with max_k_p_r 128. But,...
    after copying big files I get ext3-fs erros, cannot read inode etc and a
    bus error. Bumm!

    Maybe it runs better with your harddrives.


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