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    What is the interest in open dup question and answer self? unix.stackexchange.com/questions/58553/… & unix.stackexchange.com/questions/17936/… Commented Aug 23, 2013 at 13:59
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    @innocent-world - never saw these when I was searching, so it appeared to be a hole in the knowledge base on this site, and was attempting to fill it in. Commented Aug 23, 2013 at 14:01
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    @innocent-world - in looking at those 2 Q's I think there is still room for this Q&A. This one acts as a canonical Q&A on the site. Those are fairly specific in what they're addressing. Additionally this one shows information about analyzing the buffers & cache and also how to set the parameters using sudo. Neither of the other 2 questions address any of this. Commented Aug 23, 2013 at 14:09
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    Please read this article linuxatemyram.com If you understand the risk then you can do free && sync && echo 3 > /proc/sys/vm/drop_caches && free Commented Mar 23, 2015 at 4:36
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    "Note that this is mostly useful for benchmarking." Tip, I'm also using it to reduce memory usage in my VM before suspending it to disk. Commented May 1, 2024 at 22:27