Subject: Re: lock performance on i386
To: David Laight <>
From: Jason R Thorpe <>
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 <>