[dpdk-dev] Multi-process on the same host

[Walter de Donato <walter.dedonato@unina.it>]

Hello,

I've been using DPDK for a while and now I encountered the following issue:
when I try to run two primary processes on the same host (with --no-shconf
option enabled) respectively sending packets on one port and receiving them
on a different port (the two ports are directly connected with a CAT-6
cable), I get this error on the receiving process:

Program received signal SIGSEGV, Segmentation fault.
0x00000000004158a0 in rte_eth_rx_burst (port_id=0 '\000', queue_id=0,
rx_pkts=0x7ffff5baa8f0, nb_pkts=128) at
/home/devel/dpdk/build/include/rte_ethdev.h:1658
1658            return (*dev->rx_pkt_burst)(dev->data->rx_queues[queue_id],
rx_pkts, nb_pkts);

To give some more details:
- the options given to the two processes:
  ./receiver -c 0x3 -n 2 -m 200 --no-shconf -- -p 0x1
  ./sender -c 0xc -n 2 -m 200 --no-shconf -- -p 0x2
  where the -p option is the binary mask to select the ports to enable.
- the network card is a dualport Intel X540:
  port 0: Intel Corporation Ethernet Controller 10 Gigabit X540-AT2 (rev 01)
  port 1: Intel Corporation Ethernet Controller 10 Gigabit X540-AT2 (rev 01)
- this is the hugeadm --pool-list output:
      Size  Minimum  Current  Maximum  Default
  1073741824        2        2        2        *

My first question is: should it be possible to let separate primary
processes coexist if they use different resources (cores, ports, memory
pools)?

A second question is: there is any other workaround to let this scenario
work without merging the two processes into two lcores of the same process?

Thanks in advance,
-Walter

Walter de Donato, Ph.D.
PostDoc @ Department of Electrical Engineering and Information Technologies
University of Napoli Federico II
Via Claudio 21 -- 80125 Napoli (Italy)
Phone: +39 081 76 83821 - Fax: +39 081 76 83816
Email: walter.dedonato@unina.it
WWW: http://wpage.unina.it/walter.dedonato