On Wed, Sep 18, 2002 at 02:10:17AM +0200, Kevin D. Kissell wrote: > Are you able to test this stuff on a proper SMP > system, by the way? The efficiency of the code > that manipulates interprocessor control variables > can reasonably be expected to drop off a bit > in a system with MP cache invalidations blasting > left and right. > Yes. I understand this effect. Solution 1), 2) and 3) don't really suffer from this problem because variables tested & manipulated are local - unless the process migrates which is a different problem. Jun