Netperf vs Ostinato

Netperf is an open-source, self-hosted utility for measuring network performance. It reports unidirectional throughput and end-to-end latency through a client-server arrangement: netperf runs tests and netserver supplies the server side. Netserver can run as an inetd child or standalone daemon. The manual describes TCP and UDP transfer and request/response tests over IPv4 and IPv6 sockets, plus XTI, DLPI, Unix domain socket, and SCTP tests. Where the platform and build support it, results can include CPU utilization and service demand. Optional configuration enables STREAM pacing, timing histograms, and interim results. The primary distribution is source code, intended for systems without readily available binaries. Reported Windows builds use Cygwin, the Windows DDK, or Microsoft Visual Studio 2003; the README discusses an OSX naming workaround. Hewlett Packard Enterprise released this version under the MIT license. The project warns that its manual may be outdated, and several test families require explicit configuration.

Ostinato generates and customizes network traffic, or replays PCAP files, to help validate throughput, QoS, multicast, routing, switching, protocol behavior, and network performance. Users can edit supported protocol headers, set frame sizes, and create custom headers with hexdumps or scripts. PCAP replay can preserve or alter packet timing, loop traffic, or reorder packets. Native protocols include Ethernet, VLAN, QinQ, IPv4/IPv6, UDP, stateless TCP, ICMP, ARP/NDP, IGMP/MLD, and GRE; other methods can support headers such as MPLS and VXLAN. Reports show transmit and receive statistics, per-stream packet loss, and latency and jitter measured with software timestamps. A Python API supports stream and scenario creation, run control, counter collection, and CI/CD integration. Ostinato lists GNS3, EVE-NG, Cisco CML, and Containerlab as supported lab environments, and says it works on AWS and Azure cloud VMs. It runs on Linux, macOS, Windows, and self-hosted or API setups. Plans start at $12 a month billed annually; an active subscription is required.