Hi Joseph, > What we really need is someone with access to some computing power > (aka grid) to run a set of reference positions - 0-ply cube decisions > vs 2-ply, and see what the difference is. That would give a hint as to > what to do.
How about reporting your grep -m1 '^model name' /proc/cpuinfo along with the stock Ubuntu package version's time on a reference position when given 1, 2, ... threads. And then you're self-compiled version for comparison, noting what you changed in debian/rules. It would be a start, and also offer some precision so if something is awry then others on the list may have data to judge by. -- Cheers, Ralph.