Poor Fileserver Performance with Multiple Accesses

[myren, lord]

A confession, its just a dual-IDE software-raid-0 (each drive is the 
single master on its chain), my personal media server.  Still, 
performance is absolutely perposterous.  Debian testing with 2.6(.6-mm2) 
kernel.  hdparm speed testing is ok, about what i'd expect, but anything 
where there's multiple accesses is really pathetic: transfers run in 
three second spurts before dying and starting back up again from zero. 
its really quite pathetic.

I often have an instance or two of XMMS running remotely.  I have the 
graphical refresh set low, ~6 fps, i have a 2000ms buffer and 100ms 
polling.  and mmap enabled.  still, if i do a samba copy to or from the 
drive while music is playing, a little after two seconds it starts 
stalling out something horrible.

samba is a very bare configruation: no real performance tuning.
i just tried doing a basic cp.  same results.  xmms stutters heavily 
once or twice a second.

please help
myren
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