John Wilson wrote: > On 4/2/08, Charles Oliver Nutter <[EMAIL PROTECTED]> wrote: >> I ran into a very strange effect when some Sun folks tried to benchmark >> JRuby's multi-thread scalability. In short, adding more threads actually >> caused the benchmarks to take longer. > > > Was this work being done on Intel hardware? > > I'm just wondering if this might be some issue with the cache on Intel > mutli core processors (i.e. the cache is constantly being > invalidated). > > This could be tested by running the equivalent C code on Intel kit and > running the Java code on non Intel kit.
In both cases (my benchmarking and "Sun guys" benchmarking) it was on x86-based hardware, but my runs were on OS X Intel (Core Duo) and theirs were on Solaris AMD x86-64 (Opteron). I have not yet heard back whether my fix improved thread scaling for them. - Charlie --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "JVM Languages" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/jvm-languages?hl=en -~----------~----~----~----~------~----~------~--~---
