Sometimes (more often than we think), less concurrency is actually more. Not too long ago, I found myself in a conversation in which we were discussing non-blocking architectures, tuning, and performance. We were discussing that tuning for those models often starts with “2 threads per core” (2TPC). The discussion made me curious about how Mule’s batch module would perform if tested by 2TPC. I knew beforehand that 2TPC wouldn’t be so impressive on batch, mainly because it doesn’t use a non-blocking threading model.