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Measuring disk cache impact on system performance

Measuring disk cache impact on system performance

When you access data or load applications on your computer, the data blocks containing the data or applications are typically fetched from your local hard drive. These data blocks are loaded into memory, and are then ready for your computer to process. Since fetching data blocks from the hard drive or other external sources are very expensive in terms of time, your operating system typically implements a disk cache – data blocks that are loaded into memory remain there for…

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