1. Might want to mention FDO, even if it doesn't use the gcc-native profiling data.<p>2. Do <i>not</i> use instrumenting profilers for measuring code.
Is there anyone still using these instrumentation based profilers (vs sampling profiler like perf)? How is it like today?<p>I stopped using it a long time ago since it was so slow and not thread-safe. But I occasionally miss the comprehensive coverage it had. If the situation has changed, I'd love to give it another shot.