> however, i do experience system pauses while the disk is in heavy
> use. for example, while a large tar is going on, an 'ls' might take
> up to 2 seconds to return in another xterm. i did not observe this
> behavior on my old system (4 gig barracuda scsi on DPT controller).
the problem is a lack of fairness/tuning of the request-queue. with
ide, one stream of IO can easily starve requests for other IO; this
is not as much an issue for SCSI since SCSI emasculates the request
queue in favor of letting the disk sort requests (which is NOT a pure win.)
> here's my settings at the moment:
several (io_32big, multcount, pio_mode and unmaskirq) are irrelevant
if using_dma is set, I think.
regards, mark hahn.
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