> -----Original Message----- > From: users <users-boun...@dpdk.org> On Behalf Of Xu, Chenjie > Sent: Thursday, July 9, 2020 10:26 AM > To: users@dpdk.org > Subject: [dpdk-users] How to specify packet size of testpmd > > Hi all, > Do you know how to specify the packet size when using testpmd to test the > network performance?
Hi, Usually, testpmd just forwards the packets it receives. Testpmd itself is not a "proper" traffic generator, but it does have some capabilities to send some traffic before starting its rx-tx behavior. The command is "start tx_first" and this will by default use a small packet size. https://doc.dpdk.org/guides/testpmd_app_ug/testpmd_funcs.html#start-tx-first There are a number of more powerful DPDK based traffic generators available, if you require more features. Examples are pktgen, trex, moongen. Of course, it is also possible to modify a sample application like example/skeleton to send a specific traffic type, as your particular benchmarking might require. > Best Regards, > Xu, Chenjie Hope that helps, -Harry
