The implementation of the fork() system call is, in effect, a process cloning op

Question

The implementation of the fork() system call is, in effect, a process cloning operation. The system call makes a copy of the data associated with current process, modifies the process id and parent process id accordingly, and starts executing both the old and new processes at the machine instruction immediately following the system call. Using the implementation of fork() in the xv6 operating system as a guide, suggest a change to this process that would have the potential of a large performance increase for implementing the system call.

Explanation / Answer

fork basically creates child process and both the parent and the child processes are then called together. If we can change the code so as to create parallel independent child processes which are not dependent on each other then the performance can be improved. So instead of creating just one child process if we increase the count to 2 or more then the performance can be increased for the system calls.

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