DOCS-5171 & DOCS-5172: mongostat stat corrections

Author: schmalliso

source/includes/steps-install-mongodb-enterprise-on-debian.yaml

@@ -21,10 +21,10 @@ action:
     language: sh
     code: |
       echo "deb http://repo.mongodb.com/apt/debian "$(lsb_release -sc)"/mongodb-enterprise/2.6 main" | sudo tee /etc/apt/sources.list.d/mongodb-enterprise-2.6.list
-  post: |
-    If your Debian installation does not have ``lsb_release``
-    installed, you may install it using ``sudo apt-get install
-    lsb-release``.
+post: |
+  If your Debian installation does not have ``lsb_release``
+  installed, you may install it using ``sudo apt-get install
+  lsb-release``.
 ---
 stepnum: 3
 source:

source/reference/program/mongostat.txt

@@ -179,15 +179,21 @@ average operations per second.
    megabytes. This is the total data size at the time of the last
    :program:`mongostat` call.
 
-.. describe:: size
+.. describe:: vsize
 
    The amount of virtual memory in megabytes used by the process at
    the time of the last :program:`mongostat` call.
 
 .. describe:: non-mapped
 
-   The total amount of virtual memory excluding all mapped memory at
+   .. versionchanged:: 3.0.0 
+   Only for :ref:`storage-mmapv1`.
+
+   *Optional*. The total amount of virtual memory excluding all mapped memory at
    the time of the last :program:`mongostat` call.
+   
+   :program:`mongostat` only returns this value when started with the
+   :option:`--all <mongostat --all>` option.
 
 .. describe:: res