> when it's deployed you need to choose parallelism levels, regardless of how good the code is. Yes, absolutely, exactly. That’s why it can be really helpful t

> when it's deployed you need to choose parallelism levels, regardless of how good the code is. Yes, absolutely, exactly. That’s why it can be really helpful to pinpoint that cause of slowdown, right? It might not matter at deployment time if you have an automated shmoo that calculates the optimal thread load, but knowing the actual causes might be critical to the process, and/or really help if you don’t do it automatically. (For one, it’s possible the conditions for optimal thread load could change over the course of a run.)