[dpdk-users] error running two instances of pktgen

Stefano Salsano stefano.salsano at uniroma2.it
Thu Jun 28 10:53:14 CEST 2018


Il 2018-06-28 10:32, Muhammad Zain-ul-Abideen ha scritto:
> I think it is some sort of cli command issue now, like socket-mem or 
> blacklisting the port.
> 
> Adding Keith Wiles, the father of pktgen

thank you Muhammad, here is the commands that we run now and the overall 
recap of the problems

sudo -E ./app/x86_64-native-linuxapp-gcc/pktgen  -l 5-8 -n 3 
--file-prefix pg0 --proc-type auto -b 06:00.0 -- -P -m "6.0"

it works, then we have the error in the second instance:

sudo -E ./app/x86_64-native-linuxapp-gcc/pktgen -l 0-4 -n 3 
--file-prefix pg1 --proc-type secondary -b 06:00.1 -- -P -m "1.0"

EAL: Detected 32 lcore(s)
EAL: Detected 2 NUMA nodes
EAL: Multi-process socket /var/run/dpdk/pg1/mp_socket_12381_2a519caf5992b0
EAL: failed to send to (/var/run/dpdk/pg1/mp_socket) due to Connection 
refused
EAL: Fail to send request /var/run/dpdk/pg1/mp_socket:bus_vdev_mp
vdev_scan(): Failed to request vdev from primary
EAL: Probing VFIO support...
EAL: Could not map memory from primary process
EAL: FATAL: Cannot init memory

EAL: Cannot init memory

I don't know if it is relevant, but when running the first command I get 
a warning about hugepages (and then the pktgen works well)
EAL: Detected 32 lcore(s)
EAL: Detected 2 NUMA nodes
EAL: Auto-detected process type: PRIMARY
EAL: Multi-process socket /var/run/dpdk/pg0/mp_socket
EAL: No free hugepages reported in hugepages-1048576kB


if I run both instances with --port-type auto it detects primary mode 
for both
EAL: Detected 32 lcore(s)
EAL: Detected 2 NUMA nodes
EAL: Auto-detected process type: PRIMARY
EAL: Multi-process socket /var/run/dpdk/pg1/mp_socket
EAL: No free hugepages reported in hugepages-1048576kB
EAL: Probing VFIO support...

and then the second instance fails like this
     Create: Default TX  0:0  - Memory used (MBUFs 16384 x (size 2176 + 
Hdr 128)) + 192 =  36865 KB, headroom 128
!PANIC!: Cannot create mbuf pool (Default TX  0:0) port 0, queue 0, 
nb_mbufs 16384, socket_id 0: No such file or directory
PANIC in pktgen_mbuf_pool_create():
Cannot create mbuf pool (Default TX  0:0) port 0, queue 0, nb_mbufs 
16384, socket_id 0: No such file or directory6: 
[./app/x86_64-native-linuxapp-gcc/pktgen(_start+0x29) [0x466139]]
5: [/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0) 
[0x7ffff6cae830]]
4: [./app/x86_64-native-linuxapp-gcc/pktgen(main+0x598) [0x460388]]
3: [./app/x86_64-native-linuxapp-gcc/pktgen(pktgen_config_ports+0x18ad) 
[0x491aed]]
2: [./app/x86_64-native-linuxapp-gcc/pktgen(__rte_panic+0xc3) [0x45769b]]
1: [./app/x86_64-native-linuxapp-gcc/pktgen(rte_dump_stack+0x2b) [0x50aadb]]
Aborted


-- 
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Stefano Salsano
Professore Associato
Dipartimento Ingegneria Elettronica
Universita' di Roma Tor Vergata
Viale Politecnico, 1 - 00133 Roma - ITALY

http://netgroup.uniroma2.it/Stefano_Salsano/

E-mail  : stefano.salsano at uniroma2.it
Cell.   : +39 320 4307310
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