FAQ

Why is Antler slow to start up?

The CUE evaluator is currently being re-written to improve performance, and there is a problem with excessive memory consumption, reported here. To accomodate larger packages, either increase the amount of physical memory available, or split large test packages into multiple packages when necessary.

See CUE Evaluator for more information.

Why does the plotted Linux delivery rate sometimes look incorrect?

Values from the tcp_info struct in Linux may be collected and plotted (when TCPInfoInterval > 0), which includes the TCP delivery rate (tcpi_delivery_rate). Linux only updates this value when data is actually transferred, so if there's a halt in the data flow, it will be stuck at the last calculated value until the data flow resumes. If this occurs, look for a problem with data flowing in the network, or for bugs in a qdisc, for example.