Router Support For Fine Grained Latency Measurements
An increasing number of datacenter network applications, including automated trading and high-performance
computing, have stringent end-to-end latency requirements where even microsecond variations may be intolerable. Latterly
we use two techniques called the SNMP and Net Flow but it is not efficient. So we propose a new technique called Lossy
Difference Aggregator (LDA) to measure latencies down to tens of microseconds even in the presence of packet loss.
Because LDA does not modify or encapsulate the packet, it can be deployed incrementally without changes along the
forwarding path. LDA can be cheaply incorporated with in the routers.