Re: [rfc] lockless pagecache

Andrew Morton
2005-06-27T07:47:03Z

Nick Piggin <nickpiggin@yahoo.com.au> wrote:
>
> First I'll put up some numbers to get you interested - of a 64-way Altix
> with 64 processes each read-faulting in their own 512MB part of a 32GB
> file that is preloaded in pagecache (with the proper NUMA memory
> allocation).

I bet you can get a 5x to 10x reduction in ->tree_lock traffic by doing
16-page faultahead.