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SubjectRe: stochastic fair queueing in the elevator [Re: [BENCHMARK] 2.4.20-ck3 / aa / rmap with contest]
Andrea Arcangeli <andrea@suse.de> wrote:
>
> BTW, one thing that should definitely do readhaead and it's
> not doing that (at least in 2.4) is the readdir path, again to generate
> big commands, no matter the seeks. It was lost with the directory in
> pagecache.

Yes. But ext3 is still doing directory readahead, and I have never
noticed it gaining any particular benefit over ext2 from it.

And neither fs performs inode table readahead.
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