* rte_memzone_reserve_aligned always allocate 1GB hugepages irrespective of the size I request I allocate
@ 2022-07-19 15:11 Antonio Di Bacco
0 siblings, 0 replies; only message in thread
From: Antonio Di Bacco @ 2022-07-19 15:11 UTC (permalink / raw)
To: users
I'm working on a system that has the following hugepages configuration:
##
sudo dpdk-hugepages.py -s
Node Pages Size Total
2 256 2Mb 512Mb
2 8 1Gb 8Gb
0 256 2Mb 512Mb
0 8 1Gb 8Gb
3 256 2Mb 512Mb
3 8 1Gb 8Gb
1 256 2Mb 512Mb
1 8 1Gb 8Gb
Hugepages mounted on /dev/hugepages
##
If I try to allocate memory with
rte_memzone_reserve_aligned(mem_name, 1024*1024, socket_id,
RTE_MEMZONE_2MB | RTE_MEMZONE_SIZE_HINT_ONLY |
RTE_MEMZONE_IOVA_CONTIG, RTE_CACHE_LINE_SIZE):
it always allocate the memory on 1GB hugepage.
If I remove RTE_MEMZONE_SIZE_HINT_ONLY flag, the allocation fails.
Regards.
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