I'm surprised more application developers or 'scalability engineers' don't boot up d/sTrace as their tool of choice. It's probably between d/strace & heap alloc

I'm surprised more application developers or 'scalability engineers' don't boot up d/sTrace as their tool of choice. It's probably between d/strace & heap allocations profilers for single most valuable tool in my toolchain in the general case for identifying performance problems.