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发包工具 TRex stateless 使用笔记

https://github.com/cisco-system-traffic-generator/trex-core

Linux 运行优化

for file in `find  /sys/devices/system/cpu/ -name scaling_governor`; do echo performance > $file; doneecho never > /sys/kernel/mm/transparent_hugepage/defragecho never > /sys/kernel/mm/transparent_hugepage/enabledecho 0 > /sys/kernel/mm/transparent_hugepage/khugepaged/defragsysctl -w vm.swappiness=0sysctl -w vm.zone_reclaim_mode=0systemctl stop irqbalance

trex 初始化

trex 需安装Python2/3, 如使用busybox等自定义文件系统需配置python路径:

export PATH=/sdd/python-2.7.15/bin:$PATHcd /sdd/trex-v2.53

发包示例:

./t-rex-64  --cfg mlx5-02.yaml  -m 10 -d 60 -f cap2/imix_64_fast.yaml./t-rex-64  --cfg mlx5-02.yaml  -m 10 -d 60 -f ipv6.yaml  --ipv6  --no-ofed-check

配置单口发包, 修改mlx5-02.yaml interfaces :

### Config file generated by dpdk_setup_ports.py ###- version: 2  interfaces: ['07:00.0', "dummy"]  port_info:      - dest_mac: e8:68:19:c7:94:f2        src_mac:  50:6b:4b:d3:cf:74  platform:      master_thread_id: 0      latency_thread_id: 8      dual_if:        - socket: 0          threads: [1,2,3,4,5,6,7,9,10,11,12,13,14,15]  tw:      buckets: 1024      levels: 3      bucket_time_usec: 20.0

配置双口发包, 添加接口bus-info到配置文件:

### Config file generated by dpdk_setup_ports.py ###- version: 2  interfaces: ['07:00.0', '07:00.1']  port_info:      - dest_mac: e8:68:19:c7:94:f2        src_mac:  50:6b:4b:d3:cf:74      - dest_mac: e8:68:19:c7:94:f2        src_mac:  50:6b:4b:d3:cf:75

注:

trex startup

启动TRex服务端进入 stateless 模式, 可配置-c指定CPU.

./t-rex-64  --cfg mlx5-02.yaml --ipv6 --no-ofed-check -i

启动TRex客户端

./trex-console -s 127.0.0.1

help（帮助命令，显示所支持的命令，如：发包命令start，停止发包stop，图形化显示命令tui）

start

启动TX任务

trex>start -h usage: start [-h] [-p PORTS [PORTS ...] | -a] [--total] [--force] -f FILE             [-d TIME] [-t T1=VAL[,T2=VAL ...]] [-m MULT] [-n]             [--pin | --core_mask CORE_MASK [CORE_MASK ...]] [--sync]Start selected traffic on specified ports on TRexoptional arguments:  -h, --help            show this help message and exit  -p PORTS [PORTS ...], --port PORTS [PORTS ...]                        A list of ports on which to apply the command  -a                    Set this flag to apply the command on all available                        ports  --total               traffic will be divided between all ports specified  --force               Set if you want to stop active ports before appyling                        command.  -f FILE               File path to use  -d TIME               Set duration time for job.  -t T1=VAL[,T2=VAL ...]                        Sets tunables for a profile. Example: '-t                        fsize=100,pg_id=7'  -m MULT, --multiplier MULT                        Multiplier should be passed in the following format:                        [number][
   
     | bps | kbps | mbps | gbps | pps |                        kpps | mpps | % ]. no suffix will provide an absoulute                        factor and percentage will provide a percentage of the                        line rate. examples '-m 10', '-m 10kbps', '-m                        10kbpsl1', '-m 10mpps', '-m 23% ' '-m 23%' : is 23% L1                        bandwidth '-m 23mbps': is 23mbps in L2 bandwidth                        (including FCS+4) '-m 23mbpsl1': is 23mbps in L1                        bandwidth  -n, --dry             Dry run - no traffic will be injected  --pin                 Pin cores to interfaces - cores will be divided                        between interfaces (performance boot for symetric                        profiles)  --core_mask CORE_MASK [CORE_MASK ...]                        Core mask - only cores responding to the bit mask will                        be active  --sync                Run the traffic with syncronized time at adjacent                        ports. Need to ensure effective ipg is at least 1000                        usec.
   

示例:

start -f stl/bench.py -t size=64,vm=cached —p 0 -m 100%IPv6 SYN-FLOODstart -m 100% -p 0 --force -f stl/syn_attack.py IPv6 UDPstart -m 100% -p 0 --force -f stl/imix_ipv6.pyIPv6 SYN-FLOODstart -m 100% -p 0 --force -f stl/syn_ipv6.py

stop

停止TX任务

stop -a

tui 查看实时动态统计

实时全局统计 & 端口统计tuiquit

stats 查看当前统计

trex>stats  -husage: stats [-h] [--port PORTS [PORTS ...] | -a]             [-g | -p | --ps | -s | -l | --lh | -c | -m | -x | --xz]Show various statisticsoptional arguments:  -h, --help            show this help message and exit  --port PORTS [PORTS ...]                        A list of ports on which to apply the command  -a                    Set this flag to apply the command on all available                        ports  -g                    Fetch only global statistics  -p                    Fetch only port statistics  --ps                  Fetch only port status data  -s                    Fetch only streams stats  -l                    Fetch only latency stats  --lh                  Fetch only latency histogram  -c                    Fetch only CPU utilization stats  -m                    Fetch only MBUF utilization stats  -x                    Fetch xstats of port, excluding lines with zero values  --xz, --zx            Fetch xstats of port, including lines with zero values

示例

获取端口统计stats --ps获取端口状态stats -p获取全局统计stats -g

参考