On Wed, Jun 9, 2021 at 2:02 PM Shanmugasundaram M <shansi...@gmail.com> wrote: > We are using 6Wind fastpath(fp-rte) which is using DPDK version 18.11.1. > We are seeing 65.5G(preallocated during startup) of virtual memory for > fp-rte on a 32GB machine, 10G of that was huge pages (5000 mappings of 2M.) > > We found 4 strange anon (4K size) segments totaling 54.5G (16+16+16+6.5). > Note: we changed / customized memory CONFIG_RTE_MAX_MEMSEG_PER_LIST=24576 > and default value of CONFIG_RTE_MAX_MEMSEG_LISTS=64 used. > Kindly let us know > 1. Why are allocating 54.5 GB anonymous mapping > 2. When will we use it ?
This is likely pre-reserved virtual memory from the DPDK allocator. This virtual memory won't probably never be used. But you'd better ask 6WIND guys as they maintain their own DPDK downstream. Copying a few guys. -- David Marchand
