On 23.08.21 15:01, yaozhenguo wrote:
We can specify the number of hugepages to allocate at boot. But the hugepages is balanced in all nodes at present. In some scenarios, we only need hugepags in one node. For example: DPDK needs hugepages which is in the same node as NIC. if DPDK needs four hugepags of 1G size in node1 and system has 16 numa nodes. We must reserve 64 hugepags in kernel cmdline. But, only four hugepages is used. The others should be free after boot.If the system memory is low(for example: 64G), it will be an impossible task. So, extend hugepages kernel parameter to specify node number of hugepages to allocate at boot. For example add following parameter: hugepagesz=1G hugepages=0:1,1:3 It will allocate 1 hugepags in node0 and 3 hugepages in node1.
I like this format. -- Thanks, David / dhildenb
