hard20 pts · first answer countslinuxmemoryprocesses

Memory cost of fork

A 6 GB Redis process forks a child to write a snapshot. Free memory does not drop by 6 GB at fork time. Why?

A.The child process is swapped out to disk at onceB.fork() copies only the code, never the heapC.The kernel compresses the child's memory automaticallyD.Pages are shared copy-on-write and copied only when one side writes

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Memory cost of fork

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