On 07-Aug-19 11:51 AM, Nilesh wrote:
Hello,
We are trying to build an application over DPDK, but we are getting this
warning when we call
rte_eal_init().
EAL: Detected 24 lcore(s)
EAL: Detected 2 NUMA nodes
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: No available hugepages reported in hugepages-1048576kB
EAL: Probing VFIO support...
EAL: WARNING! Base virtual address hint (0x100005000 != 0x7f63aed91000)
not respected!
EAL: This may cause issues with mapping memory into secondary processes
EAL: WARNING! Base virtual address hint (0x10000b000 != 0x7f63a937f000)
not respected!
EAL: This may cause issues with mapping memory into secondary processes
EAL: WARNING! Base virtual address hint (0x100a0c000 != 0x7f5fa7800000)
not respected!
EAL: This may cause issues with mapping memory into secondary processes
EAL: WARNING! Base virtual address hint (0x100c11000 != 0x7f63a931e000)
not respected!
EAL: This may cause issues with mapping memory into secondary processes
rte_eal_init() is returning successfully, but we wanted to know why this
warning is coming and
what are the potential issues that may arise due to this warning.
Note: NIC is bound with igb_uio. Hugepages are mapped and there are
enough free pages.
System specification :
2 machines with
Distributor ID: Ubuntu
Description: Ubuntu 18.04.2 LTS
Release: 18.04
Codename: bionic
Kernel: 4.15.0-55-generic
*DPDK* version: 19.05.0
Hardware:
CPU: Intel(R) Xeon(R) CPU E5-2650 v4 @ 2.20GHz
NIC 1: Intel Corporation Ethernet Controller XL710 for 40GbE QSFP+ (i40e)
(If any extra setup configuration information required will be provided)
Thanks,
Nilesh
Hi,
This is normal. This happens because, by default, shared memory in EAL
is mapped starting at a specific memory offset due to certain issues
with DPDK's multiprocess support. Sometimes these offsets will not be
available, so things will get mapped at other addresses. Because this
event may cause issues with subsequent secondary process mappings, EAL
warns about this on initialization.
If you're not using secondary processes, you may disregard this warning.
--
Thanks,
Anatoly
