[deployment-guide] Updated the "Viewing Memory Usage" section.

[Jaromir Hradilek]

commit a9d5aa7a306e29ecf9b2a1c2ae7601a73603a8c7
Author: Jaromir Hradilek <jhradile at redhat.com>
Date:   Thu Oct 13 16:15:16 2011 +0200

    Updated the "Viewing Memory Usage" section.

 en-US/System_Monitoring_Tools.xml |   78 +++++++++++++++++++++---------------
 1 files changed, 45 insertions(+), 33 deletions(-)
---
diff --git a/en-US/System_Monitoring_Tools.xml b/en-US/System_Monitoring_Tools.xml
index 0333701..ee39fb3 100644
--- a/en-US/System_Monitoring_Tools.xml
+++ b/en-US/System_Monitoring_Tools.xml
@@ -189,7 +189,7 @@ Swap:  1015800k total,        0k used,  1015800k free,   189008k cached
         <primary><command>gnome-system-monitor</command></primary>
       </indexterm>
       <indexterm>
-        <primary><application>GNOME System Monitor</application></primary>
+        <primary><application>System Monitor</application></primary>
       </indexterm>
       <para>
         If you prefer a graphical interface, you can use the <application>System Monitor</application> tool. To start it, select <menuchoice><guimenu>Applications</guimenu><guimenuitem>System Tools</guimenuitem><guimenuitem>System Monitor</guimenuitem></menuchoice> from the <guimenu>Activities</guimenu> menu or type <command>gnome-system-monitor</command> at a shell prompt.
@@ -302,41 +302,53 @@ Swap:  1015800k total,        0k used,  1015800k free,   189008k cached
     <indexterm>
       <primary>RAM</primary>
     </indexterm>
-    <indexterm>
-      <primary><command>free</command></primary>
-    </indexterm>
-    <para>
-      The <command>free</command> command displays the total amount of physical memory and swap space for the system as well as the amount of memory that is used, free, shared, in kernel buffers, and cached.
-    </para>
+    <section id="s2-sysinfo-memory-usage-free">
+      <title>Using the free Command</title>
+      <indexterm>
+        <primary><command>free</command></primary>
+      </indexterm>
+      <para>
+        The <command>free</command> command displays the total amount of physical memory and swap space for the system, as well as the amount of memory that is used, free, shared, in kernel buffers, and cached. For example:
+      </para>
 <screen>~]$ <command>free</command>
              total       used       free     shared    buffers     cached
-Mem:       4017660    1619044    2398616          0      59864     637968
--/+ buffers/cache:     921212    3096448
-Swap:      3071996          0    3071996</screen>
-    <para>
-      The command <command>free -m</command> shows the same information in megabytes, which are easier to read.
-    </para>
-<screen>~]$ <command>free -m</command>
+Mem:       3084808    2293904     790904          0      88740    1557360
+-/+ buffers/cache:     647804    2437004
+Swap:      4194300          0    4194300</screen>
+      <para>
+        By default, <command>free</command> displays the values in kilobytes. To display the values in megabytes, supply the <option>-m</option> command line option:
+      </para>
+      <screen>~]$ <command>free -m</command>
              total       used       free     shared    buffers     cached
-Mem:          3923       1569       2353          0         58        626
--/+ buffers/cache:        884       3038
-Swap:         2999          0       2999</screen>
-    <para>
-      If you prefer a graphical interface for <command>free</command>, you can use the <application>GNOME System Monitor</application>. To start it from the desktop, select <menuchoice><guimenu>Applications</guimenu><guimenuitem>System Tools</guimenuitem><guimenuitem>System Monitor</guimenuitem></menuchoice> or execute <command>gnome-system-monitor</command> at a shell prompt. Click on the <guilabel>Resources</guilabel> tab.
-    </para>
-    <figure id="fig-sysinfo-memory">
-      <title>System Monitor - Resources</title>
-      <mediaobject>
-        <imageobject>
-          <imagedata fileref="images/system-monitor-resources.png" format="PNG" scalefit="0" />
-        </imageobject>
-        <textobject>
-          <para>
-            Resources tab of the gnome-system-monitor
-          </para>
-        </textobject>
-      </mediaobject>
-    </figure>
+Mem:          3012       2240        772          0         86       1520
+-/+ buffers/cache:        632       2379
+Swap:         4095          0       4095</screen>
+    </section>
+    <section id="s2-sysinfo-memory-usage-system_monitor">
+      <title>Using the System Monitor Tool</title>
+      <indexterm>
+        <primary><command>gnome-system-monitor</command></primary>
+      </indexterm>
+      <indexterm>
+        <primary><application>System Monitor</application></primary>
+      </indexterm>
+      <para>
+        If you prefer a graphical interface, you can use the <application>System Monitor</application> application. To start it, select <menuchoice><guimenu>Applications</guimenu><guimenuitem>System Tools</guimenuitem><guimenuitem>System Monitor</guimenuitem></menuchoice> from the <guimenu>Activities</guimenu> menu, or execute <command>gnome-system-monitor</command> at a shell prompt. Click on the <guilabel>Resources</guilabel> tab.
+      </para>
+      <figure id="fig-sysinfo-memory">
+        <title>System Monitor - Resources</title>
+        <mediaobject>
+          <imageobject>
+            <imagedata fileref="images/system-monitor-resources.png" format="PNG" scalefit="0" />
+          </imageobject>
+          <textobject>
+            <para>
+              Resources tab of the gnome-system-monitor
+            </para>
+          </textobject>
+        </mediaobject>
+      </figure>
+    </section>
   </section>
   <section id="s1-sysinfo-filesystems">
     <title>Viewing File Systems</title>