zMonkey is an open-source 200G network impairment emulator tool to emulate the real-world WAN/DC conditions for your applications.
it can support 90Mpps packet forwarding with latency, jitter and packet drop simulation.
Latency/Jitter accuracy is around 200 microsecond, packet drop rate accuracy is around 0.1%
zMonkey is based on DPDK and provide a udp based northbound interface for remote controller change the simulated latency/jitter/loss.
============================================================================================================================================
zMonkey Network Chaos System (by zartbot)
LeftPort-------->>>>>>>>>>--------->>>>>>>>> | <<<<<<<<<--------<<<<<<<<<<---------RightPort
|
Latency : 10000 us | Latency : 10000 us
Jitter : 0 us | Jitter : 0 us
Loss : 0 %% | Loss : 0 %%
Duplicate : 0 %% | Duplicate : 0 %%
|
Total RX : 8537641 pps ---> | <--- Total RX : 12560523 pps
Total TX : 12561167 pps <--- | ---> Total TX : 8537849 pps
|
Total TX : 63058 Mbps <--- | ---> Total TX : 94972 Mbps
--------------------------------------------------------------------------------------------------------------------------------------------
Monkey[ 0] 527920 --> LeftPort --> [Drop 0 -->(Q-Depth 5267|Fail 0)--> DeQ 527904] --> RightPort --> 527919
Monkey[ 1] 527922 --> LeftPort --> [Drop 0 -->(Q-Depth 5264|Fail 0)--> DeQ 527904] --> RightPort --> 527925
Monkey[ 2] 527941 --> LeftPort --> [Drop 0 -->(Q-Depth 5267|Fail 0)--> DeQ 527936] --> RightPort --> 527940
Monkey[ 3] 527924 --> LeftPort --> [Drop 0 -->(Q-Depth 5248|Fail 0)--> DeQ 527936] --> RightPort --> 527922
Monkey[ 4] 322660 --> LeftPort --> [Drop 0 -->(Q-Depth 3175|Fail 0)--> DeQ 322752] --> RightPort --> 322762
Monkey[ 5] 754911 --> LeftPort --> [Drop 0 -->(Q-Depth 2201|Fail 0)--> DeQ 754912] --> RightPort --> 754909
Monkey[ 6] 552003 --> LeftPort --> [Drop 0 -->(Q-Depth 752|Fail 0)--> DeQ 552032] --> RightPort --> 552025
Monkey[ 7] 552007 --> LeftPort --> [Drop 0 -->(Q-Depth 1142|Fail 0)--> DeQ 552000] --> RightPort --> 552001
Monkey[ 8] 754256 --> LeftPort --> [Drop 0 -->(Q-Depth 2114|Fail 0)--> DeQ 754272] --> RightPort --> 754256
Monkey[ 9] 322576 --> LeftPort --> [Drop 0 -->(Q-Depth 3130|Fail 0)--> DeQ 322656] --> RightPort --> 322669
Monkey[ 10] 527904 --> LeftPort --> [Drop 0 -->(Q-Depth 5266|Fail 0)--> DeQ 527904] --> RightPort --> 527904
Monkey[ 11] 527939 --> LeftPort --> [Drop 0 -->(Q-Depth 5269|Fail 0)--> DeQ 527936] --> RightPort --> 527938
Monkey[ 12] 527906 --> LeftPort --> [Drop 0 -->(Q-Depth 5261|Fail 0)--> DeQ 527904] --> RightPort --> 527905
Monkey[ 13] 527932 --> LeftPort --> [Drop 0 -->(Q-Depth 5248|Fail 0)--> DeQ 527936] --> RightPort --> 527935
Monkey[ 14] 527916 --> LeftPort --> [Drop 0 -->(Q-Depth 5241|Fail 0)--> DeQ 527936] --> RightPort --> 527916
Monkey[ 15] 527924 --> LeftPort --> [Drop 0 -->(Q-Depth 5269|Fail 0)--> DeQ 527904] --> RightPort --> 527923
--------------------------------------------------------------------------------------------------------------------------------------------
Monkey[ 0] 786318 <-- LeftPort <-- [DeQ 786336 <--(Q-Depth 7956|Fail 0)<-- Drop 0] <-- RightPort <-- 786304
Monkey[ 1] 787736 <-- LeftPort <-- [DeQ 787744 <--(Q-Depth 8060|Fail 0)<-- Drop 0] <-- RightPort <-- 787575
Monkey[ 2] 982515 <-- LeftPort <-- [DeQ 982496 <--(Q-Depth 9670|Fail 0)<-- Drop 0] <-- RightPort <-- 982476
Monkey[ 3] 785124 <-- LeftPort <-- [DeQ 785120 <--(Q-Depth 7816|Fail 0)<-- Drop 0] <-- RightPort <-- 785047
Monkey[ 4] 786164 <-- LeftPort <-- [DeQ 786144 <--(Q-Depth 7670|Fail 0)<-- Drop 0] <-- RightPort <-- 786208
Monkey[ 5] 564890 <-- LeftPort <-- [DeQ 564896 <--(Q-Depth 1653|Fail 0)<-- Drop 0] <-- RightPort <-- 565281
Monkey[ 6] 863260 <-- LeftPort <-- [DeQ 863264 <--(Q-Depth 1024|Fail 0)<-- Drop 0] <-- RightPort <-- 862875
Monkey[ 7] 752708 <-- LeftPort <-- [DeQ 752736 <--(Q-Depth 1460|Fail 0)<-- Drop 0] <-- RightPort <-- 752707
Monkey[ 8] 750114 <-- LeftPort <-- [DeQ 750112 <--(Q-Depth 2153|Fail 0)<-- Drop 0] <-- RightPort <-- 750015
Monkey[ 9] 784226 <-- LeftPort <-- [DeQ 784224 <--(Q-Depth 7923|Fail 0)<-- Drop 0] <-- RightPort <-- 784162
Monkey[ 10] 588525 <-- LeftPort <-- [DeQ 588512 <--(Q-Depth 5472|Fail 0)<-- Drop 0] <-- RightPort <-- 588200
Monkey[ 11] 785942 <-- LeftPort <-- [DeQ 785952 <--(Q-Depth 8097|Fail 0)<-- Drop 0] <-- RightPort <-- 785941
Monkey[ 12] 785343 <-- LeftPort <-- [DeQ 785344 <--(Q-Depth 7563|Fail 0)<-- Drop 0] <-- RightPort <-- 785388
Monkey[ 13] 984020 <-- LeftPort <-- [DeQ 984032 <--(Q-Depth 9791|Fail 0)<-- Drop 0] <-- RightPort <-- 984100
Monkey[ 14] 787396 <-- LeftPort <-- [DeQ 787392 <--(Q-Depth 7673|Fail 0)<-- Drop 0] <-- RightPort <-- 787414
Monkey[ 15] 786886 <-- LeftPort <-- [DeQ 786880 <--(Q-Depth 8006|Fail 0)<-- Drop 0] <-- RightPort <-- 786830
============================================================================================================================================1.support 100Gbps with 100ms latency, you must change the DPDK MBUF limit in the following file and re-compile DPDK.
Modify dpdk-21.08/config/rte_config.h
/* EAL defines */
#define RTE_MAX_HEAPS 32
#define RTE_MAX_MEMSEG_LISTS 512 //128
#define RTE_MAX_MEMSEG_PER_LIST 32768 //8192
#define RTE_MAX_MEM_MB_PER_LIST 131072 //32768
#define RTE_MAX_MEMSEG_PER_TYPE 131072 //32768
#define RTE_MAX_MEM_MB_PER_TYPE 262144 //65536- git clone and build
git clone https://github.com/zartbot/zmonkey
cd zmonkey
make
sudo ./build/zmonkey -- -h
zmonkey [EAL options] -- <Parameters>
-f --first_lcore First lcore used for forwarding thread
-n --core_num Number of lcore used for forwarding
-m --mbuf_size Number of elements in mbuf
-r --ring_size Number of elements in mbuf
-c --control_port Remote control udp port(default:6666)
zMonkey chaos config
-d --l2r_latency Left -> Right Delay time [us]
-D --r2l_latency Right -> Left Delay time [us]
-j --l2r_jitter Left -> Right Jitter time [us]
-J --r2l_jitter Right -> Left Jitter time [us]
-l --l2r_loss Left -> Right Loss rate [%%]
-L --r2l_loss Right -> Left Loss rate [%%]
-u --l2r_dup Left -> Right Duplicate rate [%%]
-U --r2l_dup Right -> Left Duplicate rate [%%]
Example:
8-Thread to handle 100G/100ms latency with 12.34% packet drop_rate
zmonkey -- --first_lcore 24 --core_num 8 --mbuf_size 2097152 --l2r_latency 100000 --l2r_loss 1234
16-Thread with 1M element buffer per thread,first lcore start at core.24
zmonkey -- --first_lcore 24 --core_num 16 --mbuf_size 1048576 --l2r_latency 10000
Short parameters
zmonkey -- -f 24 -n 12 -m 2097152 -d 100000 -D 100000
For example, we wants to build multiple bridge to emulate latency, the device PCIe id shows as below:
sudo dpdk-devbind.py -s
Network devices using DPDK-compatible driver
============================================
0000:af:00.0 'Ethernet Controller E810-C for QSFP 1592' drv=vfio-pci unused=ice
0000:af:00.1 'Ethernet Controller E810-C for QSFP 1592' drv=vfio-pci unused=ice
...
0000:86:00.0 'MT28800 Family [ConnectX-5 Ex] 1019' if=ens17f0 drv=mlx5_core unused=vfio-pci
0000:86:00.1 'MT28800 Family [ConnectX-5 Ex] 1019' if=ens17f1 drv=mlx5_core unused=vfio-pci we could use EAL parameters -a allow dedicated device and --file-prefix for difference apps, please also change the first_lcore and control_port for difference applications.
sudo ./build/zmonkey -a 0000:af:00.0 -a 0000:86:00.0 --file-prefix zm1 -- --first_lcore 24 --control_port 5555 --core_num 4 --mbuf_size 1048576 --l2r_latency 50000 --r2l_latency 50000sudo ./build/zmonkey -a 0000:af:00.1 -a 0000:86:00.1 --file-prefix zm2 -- --first_lcore 29 --control_port 7777 --core_num 4 --mbuf_size 1048576 --l2r_latency 50000 --r2l_latency 50000 check the example code in control/python
import socket
import random
import time
udpSocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
monkeyHost = ('127.0.0.1',6666)
# instr
# 1: config latency
# 2: config jitter in micro seconds
# 3: config packet drop rate in %%(1/10000)
# 4: config packet duplication rate in %%(1/10000)
#
# direction
# 0: left-->right
# 1: right-->left
#
# value uint64_t
instr = 3
direction = 0
value = 1234
sendData = str(instr) +"," + str(direction) +","+ str(value)
udpSocket.sendto(sendData.encode(),monkeyHost)