DPDK 22.11.2 requires too much VIRT memory, how to reduce

[Dmitry Kozlyuk]

Hi Ed,

DPDK indeed reserves a large amount of virtual address space at startup.
This does not prevent DPDK from running on low-memory systems, since this
reservation does not consume physical memory. So the large figure in VIRT
is not an issue. Hugepages are mapped on demand. Each mapped hugepage
consunes a file descriptor. If you use 2MB hugepages, the number of open
files can exhaust the limit easily. If you don't want to increase it,
please see:
https://doc.dpdk.org/guides/prog_guide/env_abstraction_layer.html#segment-file-descriptors

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