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SubjectRe: [PATCH] Radix-tree pagecache for 2.5

On Fri, 1 Feb 2002, Linus Torvalds wrote:

> In web-servers, 99% of the content is small files, and if the file is
> cached the expensive parts are all elsewhere. Don't make up "worst
> case schenarios" that simply do no exist.

in fact the locking structure of radix trees have a locking advantage in
the 'multiple small files' case: if one CPU does a sendfile() on one file,
then the lock will be likely CPU-local for the duration of the sendfile(),
while page buckets will access a new spinlock for every page accessed.


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