How to Clear Cache in Linux - Search Videos

Linux Page Cache Explained - Why the second read is instant.

YouTubeProfessor Linux

Linux Page Cache Explained - Why the second read is instant.

In this video I show how Linux page cache works by timing a big file before and after clearing only the file-backed cache. The first read hits the disk, the second read is instant from RAM. dstat shows the difference in real I/O.

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Cache Memory Explained

Cache Memory Explained

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Introduction to Cache Memory

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CPU Cache Explained - What is Cache Memory?

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