Re: I/O Request [Elevator; Clustering; Scatter-Gather]

From: Daniel Phillips (phillips@arcor.de)
Date: Tue Mar 04 2003 - 16:10:55 EST


On Tuesday 04 March 2003 14:50, Jens Axboe wrote:
> > Do Clustering of request and scatter-gather mean the same ?? Confused
> > to the core... Kindly help me ...
>
> No, the elevator clustering refers to clustering request that are
> contigious on disk. Scatter-gather may cluster sg entries that are
> contigious in memory.

Hi Jens,

I think you meant to write *non*contiguous in memory (but contiguous on the
device).

Regards,

Daniel
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