Optimization of maximum timeout value in TCP with a fine-grained timer for data center networks

When the standard TCP implementation is used in distributed file systems in data center, a well-known throughput degradation called TCP Incast occurs. In order to avoid TCP Incast, a TCP implementation using a specialized fine-grained timer is proposed. However, the throughput still decreases in the implementation when the number of servers in distributed file systems is large. In this paper, we clarify that the cause of the decreasing is that maximum timeout value is too large and optimize the value.