dperf 
dperf is a high-performance network traffic generator and load testing tool based on DPDK.
Advantages
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High Performance
Built on DPDK, dperf can generate massive traffic using a single x86 server — achieving tens of millions of HTTP Connections Per Second (CPS), hundreds of Gbps throughput, and billions of concurrent connections.
-
Comprehensive Statistics
Provides detailed real-time metrics and identifies every packet drop or error.
-
Versatile Use Cases
- Load and stability testing for Layer 4 Load Balancers and gateways
- Network performance benchmarking for cloud servers
- Evaluation of NIC and CPU packet processing capabilities
- Acts as a high-performance HTTP server or client for testing scenarios
All results were measured using the following hardware and configuration:
- CPU: Intel Xeon Gold 5418Y × 2
- Memory: 128 GB × 2
- NIC: Intel E810-C Dual-Port 100GbE × 2
- OS: Linux 5.10.0
HTTP Connections Per Second (CPS)
| Client Cores |
Server Cores |
HTTP CPS (Million) |
Client CPU Usage (%) |
Server CPU Usage (%) |
| 1 |
1 |
4 |
74 |
71 |
| 2 |
2 |
8 |
74 |
72 |
| 4 |
4 |
16 |
73 |
70 |
| 8 |
8 |
32 |
70 |
68 |
| 16 |
16 |
64 |
70 |
68 |
HTTP Throughput (Gbps)
| Client Cores |
Server Cores |
RX Throughput |
TX Throughput |
Client CPU Usage (%) |
Server CPU Usage (%) |
| 1 |
1 |
98.3 Gbps |
98.3 Gbps |
78 |
80 |
| 2 |
2 |
196.7 Gbps |
196.7 Gbps |
78 |
82 |
Concurrent Connections
| Client Cores |
Server Cores |
Connections (Billion) |
Client CPU Usage (%) |
Server CPU Usage (%) |
Memory Usage (GB) |
| 1 |
1 |
1 |
48 |
48 |
60 |
| 2 |
2 |
2 |
48 |
48 |
120 |
| 4 |
4 |
4 |
48 |
48 |
240 |
TCP Packets Per Second (PPS)
| Client Cores |
RX PPS (Mpps) |
TX PPS (Mpps) |
Client CPU Usage (%) |
| 1 |
16.8 |
16.8 |
99 |
| 6 |
105.2 |
105.2 |
99 |
| 12 |
204.6 |
204.6 |
99 |
Real-Time Statistics
dperf prints real-time statistics every second, including CPS, TPS, PPS, packet drops, socket errors, and HTTP status counts.
Example output:
seconds 22 cpuUsage 52
pktRx 3,001,058 pktTx 3,001,025 bitsRx 2,272,799,040 bitsTx 1,920,657,600 dropTx 0
arpRx 0 arpTx 0 icmpRx 0 icmpTx 0 otherRx 0 badRx 0
synRx 1,000,345 synTx 1,000,330 finRx 1,000,350 finTx 1,000,350 rstRx 0 rstTx 0
synRt 0 finRt 0 ackRt 0 pushRt 0 tcpDrop 0
skOpen 1,000,330 skClose 1,000,363 skCon 230 skErr 0
httpGet 1,000,345 http2XX 1,000,350 httpErr 0
ierrors 0 oerrors 0 imissed 0
Documentation
See the official website at https://dperf.org/.
Contributing
We welcome contributions! Please see the CONTRIBUTING file for details.
Patent
- Title: Testing Method and Apparatus for Network Devices
- Inventor: Jianzhang Peng
- Patent Number: CN114205274B
- Issue Date: June 11, 2024
Acknowledgment
We gratefully acknowledge xnetin for providing the high-performance testing platform used in our benchmarking experiments.
Author
Jianzhang Peng holds a Ph.D. in Computer Science from the University of Science and Technology of China (USTC). He previously worked as a Principal Engineer at Baidu, where he contributed to the development of high-performance L4 load balancer systems. He initiated and developed the dperf project during his time at Baidu, and continues to maintain it as an open-source contributor. His current focus is on low-latency network protocol stacks for quantitative trading systems.
License
dperf is licensed under the Apache License 2.0.
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