On Thu, Jun 30, 2011 at 8:04 AM, Michael Schnell <mschn...@lumino.de> wrote:
> - if the potential cache incoherency would not be handled by Hardware / OS > / Libraries on behalf of user land programs, I feel that this would so > disastrous and ubiquitous that it result in so many programs not working on > SMP systems that it would be a really well known issue. I agree. This problem when encountered was hidden during steady state testing. The list was consistently working as expected. Where it failed was when the core was ~80% usage and it walked - and it was on my test system here using daily Ubuntu x64 builds - lord knows what kernel it had those days. Infact, it could possibly be an ubiquitous exploit waiting for disaster when code normally running code encounters stale values across cores. You can imagine systems designed to never fail - fail for no known reason at all... In a case I observed, it did cause a significant problem to the server. Yes, it was disastrous, and ONLY evident during stress tests. _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
