> Here's the problem: If you profile software that is 100x slower than it needs to be on every level, there are no obvious bottlenecks. Your whole program is ju

> Here's the problem: If you profile software that is 100x slower than it needs to be on every level, there are no obvious bottlenecks. Your whole program is just slow across the board, because you used tons of allocations, abstractions and indirections at every step of the way. Oh this hurts. I work with a system in Perl that is just kinda slow. Too slow to be good but not slow enough to be useless. Slow enough that if it crashes we have trouble getting things reprocessed in a reasonable time, there's no fat built in to our timelines. Anyway I've profiled it many times and found exactly what you said. Layers and layers of OO soup, functions calling functions calling functions. There are no obvious improvements. It's overhead, not code.