Re: [PATCH 12/22] elevate write count files are open()ed

Andrew Morton
2007-02-13T18:03:14Z

> On Tue, 13 Feb 2007 08:58:16 -0800 Dave Hansen <hansendc@us.ibm.com> wrote:
> > yipes. A new mount-wide spin_lock/unlock for each for-writing open() and close().
> > Can we have a microbenchmark on this please?
>
> Yeah, I'll schedule some dbench time on a NUMA machine.

dbench doesn't do open() a lot. To assess the worst-case we'd need one
process per cpu camping in an open/close loop.