On Thu, 30 Oct 2003 00:52:29 +0900 (JST)
Noriyuki Soda <soda@sra.co.jp> wrote:

> I measured the mmap benchmarks in http://bulk.fefe.de/scalability/
> with the vm map rbtree patch ported from OpenBSD by yamt.
> 
> As you suppose, the rbtree patch made the results much better as
> follows:
>     the mmap benchmark results:
> 	http://www.sra.co.jp/people/soda/scalability/mmap.gif
> 	http://www.sra.co.jp/people/soda/scalability/mmap.zoom.gif
> 	http://www.sra.co.jp/people/soda/scalability/mmaptouch.gif
> 
>     mmap()ing many small files:
> 	http://www.sra.co.jp/people/soda/scalability/open.gif

Have you had a chance to look into why the open results?  It looks quite
bad, or are the very frequent spikes just single values?  Would the
fdalloc help here?

Chris