Will the buff cache in Linux affect physical memory, and you don't need to manually clean up the buff cache?

Asked Aug 02 '19 at 08:09

Active Aug 02 '19 at 08:16

Viewed 33 times

I use free -h see this:

              total        used        free      shared  buff/cache   available
Mem:           1.9G        1.2G        157M        4.8M        630M        635M
Swap:          947M        256M        690M

edited Aug 02 '19 at 08:16

sourcejedi

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asked Aug 02 '19 at 08:09

coldfire

@muru that's a different question, it's asking about the `buffers` part (seen nowadays in `free -w`), it's explicitly excluding the `cache` part. I'm not sure we have an existing Q&A that covers this specifically and clearly. I think we often tend to point people to http://linuxatemyram.com , that's a pretty accurate and well explained answer to the question. – sourcejedi Aug 02 '19 at 08:30
I might be biased, but if we insist on closing this question as a duplicate, I think the answer on this question would be better: [The remaining question is when will Linux clean up disk caching and will it at all?](https://unix.stackexchange.com/a/451292/29483) – sourcejedi Aug 02 '19 at 08:37

Will the buff cache in Linux affect physical memory, and you don't need to manually clean up the buff cache?

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