On Tue, 9 Jan 2007, Fengguang Wu wrote:
> >
> > The fastest and probably most important thing to add is some readahead
> > smarts to directories --- both to the htree and non-htree cases. If
>
> Here's is a quick hack to practice the directory readahead idea.
> Comments are welcome, it's a freshman's work :)
Well, I'd probably have done it differently, but more important is whether
this actually makes a difference performance-wise. Have you benchmarked it
at all?
Doing an
echo 3 > /proc/sys/vm/drop_caches
is your friend for testing things like this, to force cold-cache
behaviour..
Linus
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