Hi, Here is my topology.
************************************************************* NUMA Topology ************************************************************* NUMA domains: 2 ------------------------------------------------------------- Domain 0: Processors: 0 1 2 3 8 9 10 11 Relative distance to nodes: 10 21 Memory: 5815.68 MB free of total 5977.69 MB ------------------------------------------------------------- Domain 1: Processors: 4 5 6 7 12 13 14 15 Relative distance to nodes: 21 10 Memory: 4893.15 MB free of total 6058.52 MB I use dpdk-1.6.0r1 and I have setup 1024 pages of 2M per NUMA node, as early as possible ( boot time ) using the hugepages=2048 parameter. cat /sys/devices/system/node/node1/hugepages/hugepages-2048kB/nr_hugepages --> 1024 cat /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages --> 1024 When I try to pin my process to specific nodes like this : numactl --physcpubind=12-15 -- ./my_simulator -c f000 -n 2 -b 0000:01:00.0 --socket-mem=0,2048 -- my_simulator.conf , I get 'RING:cannot reserve memory' error. Here is the relevant part : EAL: Setting up memory... EAL: Ask a virtual area of 0x1200000 bytes EAL: Virtual area found at 0x7f217a600000 (size = 0x1200000) EAL: Ask a virtual area of 0x3ec00000 bytes EAL: Virtual area found at 0x7f213b800000 (size = 0x3ec00000) EAL: Ask a virtual area of 0x200000 bytes EAL: Virtual area found at 0x7f213b400000 (size = 0x200000) EAL: Ask a virtual area of 0x3fc00000 bytes EAL: Virtual area found at 0x7f20fb600000 (size = 0x3fc00000) EAL: Ask a virtual area of 0x200000 bytes EAL: Virtual area found at 0x7f20fb200000 (size = 0x200000) EAL: Ask a virtual area of 0x200000 bytes EAL: Virtual area found at 0x7f20fae00000 (size = 0x200000) EAL: Ask a virtual area of 0x7fc00000 bytes EAL: Virtual area found at 0x7f207b000000 (size = 0x7fc00000) EAL: Ask a virtual area of 0x200000 bytes EAL: Virtual area found at 0x7f207ac00000 (size = 0x200000) EAL: Ask a virtual area of 0x200000 bytes EAL: Virtual area found at 0x7f207a800000 (size = 0x200000) EAL: Requesting 1024 pages of size 2MB from socket 1 EAL: TSC frequency is ~1600000 KHz EAL: Master core 12 is ready (tid=81c69840) EAL: Core 13 is ready (tid=7fd55700) EAL: Core 15 is ready (tid=7ed53700) EAL: Core 14 is ready (tid=7f554700) RING: Cannot reserve memory Failed to allocate packet buffer pool. If I do not use --socket-mem=0,2048 memory ( 1024 pages ) is requested from both sockets 0 and 1 and it works, but I want to use node 1 only. In addition in order to request for 1024 pages in node 1 I must pass the --socket-mem parameter as above. I would expect that what I should pass is --socket-mem=0,1024, but then the actual memory requested is 512. Am I missing something here or is it a bug? Regards, -- Angel Kypriotis MBB LC EPC GW RD Athens PET GR Nokia 14 Km Athinon-Lamias National Road 145 64 N. Kifissia / Athens / Hellas
