On Thu, Sep 19, 2002 at 07:30:05PM +0100, David Laight wrote:

 > Which means that if the lock is contended then the cpu is
 > doing continuous, expensive, locked operations on the bus.
 > Which, IIRC, force a cache snoop? cycle on all the cpus.

Yes, this is a known issue.  It's easy to fix, just haven't done it yet.

-- 
        -- Jason R. Thorpe <thorpej@wasabisystems.com>