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Computer science / Computer Organization and Design 5 / Chapter 5 / Problem 5.10.1

Computer Organization and Design | 5th Edition | ISBN: 9780124077263 | Authors: David A. Patterson

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What is the best page size if entries now become 128 bytes

Chapter 5, Problem 5.10.1

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What is the best page size if entries now become 128 bytes?

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QUESTION:

What is the best page size if entries now become 128 bytes?

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Problem 5.10.1

For a high-performance system such as a B-tree index for a database, the page size is determined mainly by the data size and disk performance. Assume that on average a B-tree index page is 70% full with fix-sized entries. The utility of a page is its B-tree depth, calculated as log2 (entries). The following table shows that for 16-byte entries and a 10-year-old disk with a 10 ms latency and 10 MB/s transfer rate, the optimal page size is 16K.

What is the best page size if entries now become 128 bytes?

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