Hello, please, see note on the following page: https://doc.dpdk.org/guides/prog_guide/mempool_lib.html#mempool-handlers
Andrew. On 10/24/19 7:42 PM, Ravi Kerur wrote:
DPDK team, I have a simple multi process setup with OVS/DPDK as primary and another process as secondary. OVS/DPDK sets up mempool and rings with MP/MC flags and secondary process attaches to it. I have used example/multi-process/simple_mp as an example. I have disabled 'ASLR' and made sure primary and secondary use distinct EAL lcores. test case is that for every 10/12 packets OVS/DPDK does rte_mempool_get() and rte_ring_enqueue() with information about the packets secondary process does rte_ring_dequeue() and rte_mempool_put() Couple of minutes into the test secondary process crashes with following baktrace. Any other system level settings need to be set or inputs on debugging bucket_enqueue? #0 0x0000555555734160 in bucket_enqueue () #1 0x00005555555edf06 in rte_mempool_ops_enqueue_bulk (mp=0x17fa9ac80, obj_table=0x17fac8210, n=16) at /home/rkerur/dpdk-stable-18.11.2//x86_64-native-linuxapp-gcc/include/rte_mempool.h:704 #2 0x00005555555f072a in __mempool_generic_put (cache=0x17fac8100, n=1, obj_table=0x7ffff4e09050, mp=0x17fa9ac80) at /home/rkerur/dpdk-stable-18.11.2//x86_64-native-linuxapp-gcc/include/rte_mempool.h:1249 #3 rte_mempool_generic_put (cache=0x17fac8100, n=1, obj_table=0x7ffff4e09050, mp=0x17fa9ac80) at /home/rkerur/dpdk-stable-18.11.2//x86_64-native-linuxapp-gcc/include/rte_mempool.h:1285 #4 rte_mempool_put_bulk (n=1, obj_table=0x7ffff4e09050, mp=0x17fa9ac80) at /home/rkerur/dpdk-stable-18.11.2//x86_64-native-linuxapp-gcc/include/rte_mempool.h:1308 #5 rte_mempool_put (obj=0x17f994300, mp=0x17fa9ac80) at /home/rkerur/dpdk-stable-18.11.2//x86_64-native-linuxapp-gcc/include/rte_mempool.h:1326 #6 lcore_recv (arg=0x7fffffffd5b3) at /home/rkerur/simple_mp_ovs/main.c:369 #7 0x00005555556df8f1 in eal_thread_loop () #8 0x00007ffff72086db in start_thread (arg=0x7ffff4e0b700) at pthread_create.c:463 #9 0x00007ffff6f3188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thanks, Ravi
