Re: rbtree for vm_map
Chris Gilbert <[email protected]>
| Newsgroups | gmane.os.netbsd.devel.performance |
|---|---|
| Message-ID | <[email protected]> |
On Thu, 30 Oct 2003 00:52:29 +0900 (JST) Noriyuki Soda <[email protected]> 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