Dogfooding Chronicles: Tracing the path from “It’s Slow” to “What’s Slow” Sentry has been using its Performance feature in advance of its release to identify and fix issues before they reach their customers. The company's solution engineers and product marketers used the tool to diagnose a problem with one of their demo pages, which was taking too long to load. By tracing the issue using Sentry's Performance feature, the team discovered that it was caused by an improperly instrumented API, not a connection issue as initially thought. With full visibility into what caused the error, the team was able to resolve the issue and avoid sending blame emails. The use of Performance proved to be a valuable tool in delivering context and resolving issues efficiently.