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mmap() file

Question Text​

What is one advantage of mapping a file in memory?

Question Answers​

  • It reduces interaction with the disk

  • Consumes less memory

  • It is faster because it does not uses the file API

  • Allows all threads to use the same memory area

Feedback​

After mapping a file in memory, all changes will be visible only in memory. When removing the mapping or explicitely calling msync() the information from memory will be visible on disk.