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how to totally clear the filesytem's cache on linux?
Fresh7 days ago
Mar 15, 202618987 viewsConfidence Score0%
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Problem
In a performance test, I want to bypass the influence of cache of linux system (including page cache/inode cache and so on). I have tried O_DIRECT flag, but it's turned out that direct I/O is still "enjoy" the effect of some cache. Is there a thorough way to close the effect of system cache?
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Fix for: how to totally clear the filesytem's cache on linux?
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(it actually drops so..) run first, then free pagecache: free dentries and inodes: free pagecache, dentries and inodes: Then you can start with a clean cache, but of course caching will still work.
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