Re: [PATCH] speed up SATA

From: Andrew Morton
Date: Sun Mar 28 2004 - 15:35:23 EST


Jeff Garzik <jgarzik@xxxxxxxxx> wrote:
>
> I like generic tunables such as "laptop mode" or "low latency" or "high
> throughput". These sorts of tunables should affect the "automagic"
> calculations.

Not sure. Things like "low latency" and "high throughput" may need other
things, such as "seek latency" and "bandwidth" as _inputs_, not as outputs.

Such device parameters should have reasonable defaults, and use a userspace
app which runs a quick seek latency and bandwidth test at mount-time,
poking the results into sysfs.
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