Re: [PATCH] aio: optimize free kioctx slot search

From: Matthew Wilcox
Date: Thu Dec 26 2013 - 09:14:04 EST

On Thu, Dec 26, 2013 at 06:22:10PM +0800, Gu Zheng wrote:
> to the new free slot if it's smaller than 'next_free'. So that we can
> ensure that the slots before 'next_free' are all used, and the search can start
> from 'next_free' to reduce the search and improve the performance.

Have you benchmarked it? What kinds of improvements are you seeing?

Matthew Wilcox Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."
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