CMSC 125: Operating Systems LE04 pt 2

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Across
  1. 3. multiple disk drives providing reliability over redundancy.
  2. 4. Identified performance gains from adding additional cores to an application with both serial and parallel components.
  3. 6. A block of available memory.
  4. 7. Memory management scheme supporting user view of memory.
  5. 8. Supports more than one task making progress
  6. 10. Find some page in memory, but not really in use, page it out.
  7. 11. Segment of code involving modification of common variables.
  8. 14. Also called associative memory.
  9. 15. Virtual memory uses disk space as extension of main memory.
  10. 16. Sepration of user logical memory from physical memory.
  11. 17. Time it takes to stop one process and start another.
  12. 19. Hardware device which maps virtual addresses to corresponding physical addresses.
Down
  1. 1. Occurs when a computer's virtual memory subsystem is in a constant state of paging.
  2. 2. Phenomenon wherein no progress is achieved due to processes waiting on each other.
  3. 3. Amount of time from request to first response.
  4. 5. Allows bringing of page into memory only when needed.
  5. 8. Sits between CPU registers and main memory.
  6. 9. More frames, more page fault.
  7. 12. A software generated interrupt caused by an error or a user request.
  8. 13. Allows both parent and child process to initially share the same pages in memory.
  9. 18. Systems where access to main memory may vary.