Node.js os.freemem() Method
The os.freemem() method is an inbuilt application programming interface of the os module which is used to get the amount of free system memory.
Syntax:
os.freemem()
Parameters: This method does not accept any parameters.
Return Value: This method returns an integer value that specifies the amount of free system memory in bytes.
Example 1: The below example illustrates the use of os.freemem() method in Node.js:
javascript
// Node.js program to demonstrate the // os.freemem() method // Allocating os module const os = require( 'os' ); // Printing os.freemem() value console.log(os.freemem()); |
Output:
4158910464
Example 2: The below example illustrates the use of os.freemem() method in Node.js:
javascript
// Node.js program to demonstrate the // os.freemem() method // Allocating os module const os = require( 'os' ); // Printing os.freemem() value const free_memory = os.freemem(); const free_mem_in_kb = free_memory / 1024; const free_mem_in_mb = free_mem_in_kb / 1024; const free_mem_in_gb = free_mem_in_mb / 1024; free_mem_in_kb = Math.floor(free_mem_in_kb); free_mem_in_mb = Math.floor(free_mem_in_mb); free_mem_in_gb = Math.floor(free_mem_in_gb); free_mem_in_mb = free_mem_in_mb % 1024; free_mem_in_kb = free_mem_in_kb % 1024; free_memory = free_memory % 1024; console.log( "Free memory: " + free_mem_in_gb + "GB " + free_mem_in_mb + "MB " + free_mem_in_kb + "KB and " + free_memory + "Bytes" ); |
Output:
Free memory: 4GB 110MB 88KB and 0Bytes
Note: The above program will compile and run by using the node index.js command.
Reference: https://nodejs.org/api/os.html#os_os_freemem