Hello, I am trying to run L2FW DTS with pktgen on DELL R720 server, and I get "Illegal instruction". I tried to find the root cause of the problem, and it seems related to the pktgen binary, to something related to a CPU flag (RTE_CPUFLAG_RTM flag (Transactional memory). I cloned the latest DTS repo, and extracted pktgen from it (it is in the dep/tgen.tgz tar file). My first question is: is this binary created from the official pktgen tree ? (in case it is, which version of pktgen is it?) or is it after applying some patches? (the reason for this question will be clear soon). Second: when I try to run it as stand alone and look at the core dump, I see the following: ./pktgen Illegal instruction (core dumped) gdb ./pktgen core GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.3) 7.7.1 Copyright (C) 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from ./pktgen...done. [New LWP 6639] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". ---Type to continue, or q to quit--- Core was generated by `./pktgen'. Program terminated with signal SIGILL, Illegal instruction. #0 0x000000000043417d in rte_cpu_get_flag_enabled (feature=6217008, feature@entry=RTE_CPUFLAG_RTM) at /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_cpuflags.h:303 303 /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_cpuflags.h: No such file or directory. (gdb) bt #0 0x000000000043417d in rte_cpu_get_flag_enabled (feature=6217008, feature@entry=RTE_CPUFLAG_RTM) at /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_cpuflags.h:303 #1 0x00000000004341ae in rte_rtm_init () at /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_spinlock.h:103 #2 0x00000000005d451d in __libc_csu_init () #3 0x00007fe2fda1aed5 in __libc_start_main (main=0x433400
, argc=1, argv=0x7ffd0c6a5868, init=0x5d44d0 <__libc_csu_init>, fini=, rtld_fini=, stack_end=0x7ffd0c6a5858) at libc-start.c:246 #4 0x0000000000435385 in _start () (gdb) - and I get the same issue of "illegal instruction" and the same results also with older official DTS releases, like https://dpdk.org/browse/tools/dts/snapshot/dts-17.11.tar.xz and https://dpdk.org/browse/tools/dts/snapshot/dts-17.05.tar.xz Regards, Dan