[Bug 15884] cd-burning reduces other simultaneous IO performance

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https://bugzilla.kernel.org/show_bug.cgi?id=15884





--- Comment #7 from Robert Hancock <hancockrwd@xxxxxxxxx>  2010-05-06 01:49:17 ---
Ah, it's one of those JMicron PATA controllers. I'm assuming you only have one
physical PATA connector on the board, so splitting the devices onto different
channels isn't an option.

Unfortunately I don't think there's much that can be done about this at the
kernel level, it's kind of an inherent limitation of PATA. The burning software
might be able to improve on things with different selection/ordering of
commands, but the kernel doesn't have any control over that, it just passes the
commands through to the drive.

Honestly I think the best solution here is to either add another PATA
controller to provide another channel, or replace one of the devices with a
SATA one.

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