[dpdk-users] Issue with more Cores assigned: Cannot mmap device resource file
d.coen at resi.it
Wed Mar 15 15:56:13 CET 2017
Hi Kai, I agree with you.
Hi have quite the same issue, a primary application and a secondary one
running, sometimes, with more than 4 cores.
I'm using DPDK 16.11 on RedHat 6.7.
Till now I solved in this way:
- Disabling ASLR by adding those two lines to "/etc/sysctl.conf":
# Disable Address Space Layout Randomization (ASLR) (needed
kernel.randomize_va_space = 0
- Getting virtual address of the first (the one with the minimum address
value) memory segment returned from the function "rte_eal_get_physmem_layout
()", called from a "dummy" primary application used only to get this
- Passing the above virtual address as a parameter for the "real" primary
application using the " --base-virtaddr= " dpdk command line option. When
secondary app starts, it all goes well with the specified base address.
I've tested this solution on different servers and it's always ok.
I think that there is some kind of limitation on DPDK primary/secondary
initialization process that could be improved.
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