On Fri, 20 Aug 2021 11:05:36 +0800 yaozhenguo <yaozhenguo1@xxxxxxxxx> 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, add hugepages_node kernel parameter to specify > node number of hugepages to allocate at boot. > For example add following parameter: > > hugepagesz=1G hugepages_node=1 hugepages=4 > > It will allocate 4 hugepags in node1 at boot. If were going to do this, shouldn't we permit more than one node? hugepages_nodes=1,2,5
