You have to trade that against the large optimizations that were never made because performance analysis of the whole system was essentially unavailable. This

You have to trade that against the large optimizations that were never made because performance analysis of the whole system was essentially unavailable. This is a very new change in Fedora, but hopefully we'll now see lots of big performance improvements in common workloads. The analysis I was doing when writing this blog post was about understanding where 50% of the time of my program was going. The fix literally doubled the speed of the program: https://bugzilla.redhat.com/show_bug.cgi?id=2166686 https://bugzilla.redhat.com/show_bug.cgi?id=2166686