My experience with PGO it that it's a much larger footgun. If you can't profile your actual production workload then it's very frequently just going to make you

My experience with PGO it that it's a much larger footgun. If you can't profile your actual production workload then it's very frequently just going to make your program slower. Even if you can profile production, it's still an easy way to completely blow out your long-tail latency for codepaths that PGO decides don't matter.