Overcommit_memory of Linux kernel parameters

/etc/sysctl.conf Vm.overcommit_memory=1Or sysctl Vm.overcommit_memory=1 or echo 1 >/proc/sys/vm/overcommit_memory The kernel parameters are described below: 　　 overcommit_memoryThe file specifies the kernel's policy for memory allocation, which can be a value of 0、 1、 2。 0Indicates that the kernel will check for sufficient available memory to be used by the process, and if sufficient memory is available, the memory request is allowed; otherwise, the memory request fails and the error is returned to the application process.
　　 1, which means that the kernel allows all physical memory to be allocated regardless of the current state of memory.
　　 2That indicates that the kernel allows allocating more memory than the sum of all physical memory and swap space

Overcommit_memory of Linux kernel parameters