Subject: Re: lock performance on i386
To: David Laight <david@l8s.co.uk>
From: Jason R Thorpe <thorpej@wasabisystems.com>
List: tech-smp
Date: 09/19/2002 12:04:40
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>