Hi, My goal is to test DPDK applications running on the same server as a primary process and secondary process. When I execute two dpdk-simple-mp processes, one as primary and other as secondary, I see them both startup with no issues. # ./dpdk-simple_mp -c 0x2 -n 4 --legacy-mem --proc-type primary -- # ./dpdk-simple_mp -c 0x8 -n 4 --legacy-mem --proc-type secondary -- Now when I test our DPDK application (as primary) and same dpdk-simple-mp (as secondary) I get error "EAL: Cannot initialize tailq: RTE_FIB). EAL args: MyApp, -l 25,26,27,28 -n 4 -socket-mem=2048, --legacy-mem -no-telemetry -proc_type=primary # ./dpdk-simple_mp -l 24 -n 4 --legacy-mem --proc-type secondary -- When I use gdb I see that t->head is 0x0 in eal_common_tailqs.c Line 148. (gdb) p *t $40 = {head = 0x0, next = {tqe_next = 0x1c68c40 , tqe_prev = 0x1c67108 }, name = "RTE_FIB", '\000' } I created 2 - 1G hugepages per CPU socket for each test case listed above. [root@localhost ~]# /opt/dpdk/dpdk-hugepages.py -s Node Pages Size Total 0 2 1Gb 2Gb 1 2 1Gb 2Gb The dpdk-simple_mp execution output is shown below: [root@localhost ~]# ./dpdk-simple_mp -l 24 -n 4 --legacy-mem --huge-dir /dev/mnt/huge --proc-type secondary -- EAL: Detected CPU lcores: 128 EAL: Detected NUMA nodes: 2 EAL: Static memory layout is selected, amount of reserved memory can be adjusted with -m or --socket-mem EAL: Detected static linkage of DPDK EAL: Multi-process socket /var/run/dpdk/rte/mp_socket_18349_8160ff395b1 EAL: Selected IOVA mode 'PA' EAL: WARNING: Address Space Layout Randomization (ASLR) is enabled in the kernel. EAL: This may cause issues with mapping memory into secondary processes EAL: Cannot initialize tailq: RTE_FIB Tailq 0: qname:, tqh_first:(nil), tqh_last:0x100004490 Tailq 1: qname:, tqh_first:(nil), tqh_last:0x1000044c0 Tailq 2: qname:, tqh_first:(nil), tqh_last:0x1000044f0 Tailq 3: qname:, tqh_first:(nil), tqh_last:0x100004520 Tailq 4: qname:, tqh_first:(nil), tqh_last:0x100004550 Tailq 5: qname:, tqh_first:(nil), tqh_last:0x100004580 Tailq 6: qname:, tqh_first:(nil), tqh_last:0x1000045b0 Tailq 7: qname:, tqh_first:0x1bfd9f140, tqh_last:0x1bf6f4240 Tailq 8: qname:, tqh_first:(nil), tqh_last:0x100004610 Tailq 9: qname:, tqh_first:(nil), tqh_last:0x100004640 Tailq 10: qname:, tqh_first:(nil), tqh_last:0x100004670 Tailq 11: qname:, tqh_first:(nil), tqh_last:0x1000046a0 Tailq 12: qname:, tqh_first:(nil), tqh_last:0x1000046d0 Tailq 13: qname:, tqh_first:0x1bf282000, tqh_last:0x1bf282000 Tailq 14: qname:, tqh_first:0x1bfdc79c0, tqh_last:0x14f261ac0 Tailq 15: qname:, tqh_first:0x14f871680, tqh_last:0x14f870cc0 Tailq 16: qname:, tqh_first:0x14f871080, tqh_last:0x14f871080 Tailq 17: qname:, tqh_first:0x1bfffce00, tqh_last:0x1bf939e40 Tailq 18: qname:, tqh_first:(nil), tqh_last:0x1000047f0 Tailq 19: qname:<>, tqh_first:(nil), tqh_last:(nil) Tailq 20: qname:<>, tqh_first:(nil), tqh_last:(nil) Tailq 21: qname:<>, tqh_first:(nil), tqh_last:(nil) Tailq 22: qname:<>, tqh_first:(nil), tqh_last:(nil) Tailq 23: qname:<>, tqh_first:(nil), tqh_last:(nil) Tailq 24: qname:<>, tqh_first:(nil), tqh_last:(nil) Tailq 25: qname:<>, tqh_first:(nil), tqh_last:(nil) Tailq 26: qname:<>, tqh_first:(nil), tqh_last:(nil) Tailq 27: qname:<>, tqh_first:(nil), tqh_last:(nil) Tailq 28: qname:<>, tqh_first:(nil), tqh_last:(nil) Tailq 29: qname:<>, tqh_first:(nil), tqh_last:(nil) Tailq 30: qname:<>, tqh_first:(nil), tqh_last:(nil) Tailq 31: qname:<>, tqh_first:(nil), tqh_last:(nil) EAL: Cannot init tail queues for objects EAL: Error - exiting with code: 1 Cannot init EAL How do I resolve this issue? Thanks, Ed