[jira] [Created] (AMBARI-1946) Heatmap memory should not include cached memory as part of "used"

["Jeff Sposetti (JIRA)" <ji...@apache.org>]

Jeff Sposetti created AMBARI-1946:
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             Summary: Heatmap memory should not include cached memory as part of "used"
                 Key: AMBARI-1946
                 URL: https://issues.apache.org/jira/browse/AMBARI-1946
             Project: Ambari
          Issue Type: Bug
          Components: client
    Affects Versions: 1.2.2
            Reporter: Jeff Sposetti


The "Memory Used %" is currently calculated using thie forumla:

(mem_total - mem_free)/mem_total

Although this is accurate, the total includes mem_cached (file system cache), which the kernal can take back whenever it wants to.

Therefore, formula can be doing this instead:

(mem_total - mem_free - mem_cached)/mem_total

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