> 
quoted text
> The kernel really cannot sustain 125MB/s? I assume the disk
> array is capable?

Yes, the array should be capable, LSI controller U320, SATA disks inside
the array. 

quoted text
> Where is the bottleneck? Does it keep all disks busy, or are
> the CPUs overloaded?

I'm not sure where the bottleneck is. CPU Load goes up with 
many pdflush processes in D state.

Thanks for the suggestions with sg and O_DIRECT so far, 
will try this.

-Michael



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