| 21. | In its simplest form, main memory databases store data on volatile memory devices.
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| 22. | For each of the three states, the process occupies space in main memory.
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| 23. | Modern CPUs operate considerably faster than the main memory they use.
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| 24. | When used, the data from the backing store is moved into main memory.
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| 25. | Prime95 also constantly accesses main memory at up to 60 MB per second.
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| 26. | Do not set a too large swap space, as that wastes the main memory.
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| 27. | Presently, a cache miss penalty to main memory costs several hundreds of CPU cycles.
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| 28. | 16MB RAM : This machine has 16MB of main memory.
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| 29. | Level 0 is kept in main memory, and might be represented using a tree.
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| 30. | Another design problem was the increasing performance gap between the processor and main memory.
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