A Few Worrisome Regressions Appear In Ubuntu 15.04 vs. 15.10 Performance

With Ubuntu 15.10 set to be released later this month, I've started preparing for a variety of Linux performance comparisons involving the Wily Werewolf. This morning I ran some Ubuntu 15.04 vs. 15.10 benchmarks on one of my frequent test beds and it's revealed a few significant changes in some of the benchmarks...