dperf

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dperf is a DPDK based 100Gbps network performance and load testing software.

Advantage

• High performance：
  • Based on DPDK, dperf can generate huge traffic with a single x86 server: tens of millions of HTTP CPS，hundreds of Gbps throughput and billions of concurrent connections.
• Detailed statistics：
  • Provides detailed statistics and identify every packet loss.
• Support multiple scenarios：
  • Load testing and stability testing for Layer 4 Load Balancer and other Layer 4 gateways
  • Network performance testing for servers on cloud
  • Performance test of network package processing capability for NIC and CPU
  • Can be used as a high performance HTTP server or client for load testing

Performance

HTTP Connections per Second

Client Cores	Server Cores	HTTP CPS
1	1	2,101,044
2	2	4,000,423
4	4	7,010,743
6	6	10,027,172

HTTP Throughput per Second

Client Cores	Server Cores	RX(Gbps)	TX(Gbps))	Client CPU Usage(%)	Server CPU Usage(%)
1	1	18	18	60	59
2	2	35	35	60	59
4	4	46	46	43	43

HTTP Current Connections

Client Cores	Server Cores	Current Connections	Client CPU Usage(%)	Server CPU Usage(%)
1	1	100,000,000	34	39
2	1	200,000,000	36	39
4	4	400,000,000	40	41

Client & Server Configuration

Above performance is obtained with below configurations:

• MEM: 512GB(hugepage 100GB)
• NIC: Mellanox MT27710 25Gbps * 2
• Kernel: 4.19.90

Statistics

dperf outputs various statistics every second：

• TPS, CPS, various PPS
• Errors of TCP/Socket/HTTP
• Packets loss/drop
• Retransmissions of TCP Flags

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

Getting Started

#set hugepages
#edit '/boot/grub2/grub.cfg' like this, and reboot the OS
#linux16 /vmlinuz-... nopku transparent_hugepage=never default_hugepagesz=1G hugepagesz=1G hugepages=8

#download & build dpdk
#download and unpack dpdk
TARGET=x86_64-native-linuxapp-gcc
#TARGET=arm64-armv8a-linuxapp-gcc
cd /root/dpdk/dpdk-stable-19.11.10
make install T=$TARGET -j16

#build dperf
cd dperf
make -j8 RTE_SDK=/root/dpdk/dpdk-stable-19.11.10 RTE_TARGET=$TARGET

#bind NIC
modprobe uio
modprobe uio_pci_generic

#skip this step if using Mellanox interface card!!
#Suppose your PCI number is 0000:1b:00.0
/root/dpdk/dpdk-stable-19.11.10/usertools/dpdk-devbind.py -b uio_pci_generic 0000:1b:00.0

#verify if dperf is installed successfully
#start dperf server
#dperf server bind at 6.6.241.27:80,  gateway is 6.6.241.1
./build/dperf -c test/http/server-cps.conf

#send request to dperf server from a client
curl http://6.6.241.27/

Running the tests

Below example will start a HTTP CPS stress test.
#run dperf server ./build/dperf -c test/http/server-cps.conf

#from another host, run dperf client
./build/dperf -c test/http/client-cps.conf

Documentation

• configuration
• design
• build
• statistics

Limitation

• dperf requires that the HTTP message is in one packet, which is not suitable for the test of layer 7 load balancer;
• dperf requires exclusive use of the network interfaces.
• dperf uses the FDIR feature. For the network interface that do not have this feature, dperf can only run in 'single-threaded' mode.
• dperf does not have routing capability. It is recommended to build a test environment with a switch.
• dperf does not support bonding. Vxlan will be in the next version.

Contributing

dperf welcomes your contribution. See the CONTRIBUTING file for details.

Authors

• Jianzhang Peng - Initial work

License

dperf is distributed under the Apache License, Version 2.0.