On 17-Feb-20 9:57 AM, Kamaraj P wrote:
Hi Anatoly,
Thanks for the clarifications.
Currently we are migrating to the new DPDK 18.11 ( from 17.05). Here is
our configuration:
=======================================================================
We have configured the "--legacy-mem" option and changed the
CONFIG_RTE_MAX_MEM_MB to 2048 (and we are passing 2MB huge page 188 and
no 1G hugepages in the bootargs).
Our application deployment as 2G RAM
=======================================================================
We are observing the hang issue, with above configuration.
Please see the below logs:
EAL: Detected lcore 0 as core 0 on socket 0
EAL: Support maximum 128 logical core(s) by configuration.
EAL: Detected 1 lcore(s)
EAL: Detected 1 NUMA nodes
EAL: open shared lib /usr/lib64/librte_pmd_ixgbe.so.2.1
EAL: open shared lib /usr/lib64/librte_pmd_e1000.so.1.1
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Module /sys/module/vfio_pci not found! error 2 (No such file or
directory)
EAL: VFIO PCI modules not loaded
EAL: No free hugepages reported in hugepages-1048576kB
EAL: No free hugepages reported in hugepages-1048576kB
EAL: Probing VFIO support...
EAL: Module /sys/module/vfio not found! error 2 (No such file or directory)
EAL: VFIO modules not loaded, skipping VFIO support...
EAL: Ask a virtual area of 0x2e000 bytes
EAL: Virtual area found at 0x100000000 (size = 0x2e000)
EAL: Setting up physically contiguous memory...
EAL: Setting maximum number of open files to 4096
EAL: Detected memory type: socket_id:0 hugepage_sz:1073741824
EAL: Detected memory type: socket_id:0 hugepage_sz:2097152
EAL: Creating 1 segment lists: n_segs:1 socket_id:0 hugepage_sz:1073741824
EAL: Ask a virtual area of 0x1000 bytes
EAL: Virtual area found at 0x10002e000 (size = 0x1000)
EAL: Memseg list allocated: 0x100000kB at socket 0
EAL: Ask a virtual area of 0x40000000 bytes
<<< --- struck here ---> >>>>
Is there any other dpdk options thro which we can resolve the above
issue ? Any thoughts ?
Like passing the *--socket-limit* and *--m *parameter etc during the EAL
Init (could help ???).
Please suggest us.
It sounds like it hangs in eal_get_virtual_area() - we've had a similar
issue before, not sure if the fix was backported to 18.11. Is this patch
present in your code?
http://patches.dpdk.org/patch/51943/
If not, it would be of great help if you could find the exact spot where
the hang happens.
--
Thanks,
Anatoly
