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Merge pull request #641 from cpuguy83/35295_memusage_pagecache_note 

Add note about reported memory stats on linux
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Sebastiaan van Stijn 2017-10-26 02:28:06 +02:00 committed by GitHub
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docs/reference/commandline/stats.md
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@ -34,6 +34,8 @@ The `docker stats` command returns a live data stream for running containers. To
If you want more detailed information about a container's resource usage, use the `/containers/(id)/stats` API endpoint.
> **Note**: On Linux, the Docker CLI reports memory usage by subtracting page cache usage from the total memory usage. The API does not perform such a calculation but rather provides the total memory usage and the amount from the page cache so that clients can use the data as needed.
## Examples
Running `docker stats` on all running containers against a Linux daemon.