Re: [PATCH] Scalable page cache

Rik van Riel (riel@conectiva.com.br)
Mon, 26 Nov 2001 16:11:04 -0200 (BRST)

On Mon, 26 Nov 2001, David S. Miller wrote:
> From: Ingo Molnar <mingo@elte.hu>
> Date: Mon, 26 Nov 2001 18:22:25 +0100 (CET)
>
> The problem with the tree is that if we have a big, eg. 16 GB pagecache,
> then even assuming a perfectly balanced tree, it takes more than 20
> iterations to find the page in the tree.
>
> His tree is per-inode, so you'd need a fully in ram 16GB _FILE_ to get
> the bad tree search properties you describe.

Also, if you keep heavily accessing that file, chances
are the top nodes of the tree will be in cache.

> I like his patch, a lot.

Certainly removes some complexity ;)

Rik

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