diff --git a/db/dbcommands.cpp b/db/dbcommands.cpp
index 6385033d20b..f29e1640fae 100644
--- a/db/dbcommands.cpp
+++ b/db/dbcommands.cpp
@@ -347,6 +347,14 @@ namespace mongo {
                 bb.append( "available" , connTicketHolder.available() );
                 bb.done();
             }
+            {
+                BSONObjBuilder bb( result.subobjStart( "extra_info" ) );
+                bb.append("note", "fields vary by platform");
+                ProcessInfo p;
+                p.getExtraInfo(bb);
+                bb.done();
+            }
+
 
 
             return true;
diff --git a/util/processinfo.h b/util/processinfo.h
index 38a63af2efb..83c3bcff300 100644
--- a/util/processinfo.h
+++ b/util/processinfo.h
@@ -27,6 +27,8 @@ int getpid();
 #endif
 
 namespace mongo {
+
+    class BSONObjBuilder;
     
     class ProcessInfo {
     public:
@@ -42,6 +44,11 @@ namespace mongo {
          * @return mbytes
          */
         int getResidentSize();
+
+        /**
+         * Append platform-specific data to obj
+         */
+        void getExtraInfo(BSONObjBuilder& info);
         
         bool supported();
 
diff --git a/util/processinfo_darwin.cpp b/util/processinfo_darwin.cpp
index 1de18eac68d..904f967e9f3 100644
--- a/util/processinfo_darwin.cpp
+++ b/util/processinfo_darwin.cpp
@@ -90,4 +90,6 @@ namespace mongo {
         return (int)( ti.resident_size / (1024 * 1024 ) );
     }
 
+    void ProcessInfo::getExtraInfo(BSONObjBuilder& info) {}
+
 }
diff --git a/util/processinfo_linux2.cpp b/util/processinfo_linux2.cpp
index 8ff67ad5683..3e00c060fd3 100644
--- a/util/processinfo_linux2.cpp
+++ b/util/processinfo_linux2.cpp
@@ -19,6 +19,8 @@
 
 #include <iostream>
 #include <stdio.h>
+#include <malloc.h>
+#include <db/jsobj.h>
 
 using namespace std;
 
@@ -90,7 +92,6 @@ namespace mongo {
             return (unsigned long)_rss * 4 * 1024;
         }
         
-    private:
         int _pid; 
         // The process ID.
         
@@ -203,4 +204,12 @@ namespace mongo {
         return (int)( p.getResidentSize() / ( 1024.0 * 1024 ) );
     }
 
+    void ProcessInfo::getExtraInfo(BSONObjBuilder& info){
+        struct mallinfo malloc_info = mallinfo(); // structure has same name as function that returns it. (see malloc.h)
+        info.append("heap_usage_bytes", malloc_info.uordblks);
+
+        LinuxProc p(_pid);
+        info.append("page_faults", (int)p._maj_flt);
+    }
+
 }
diff --git a/util/processinfo_none.cpp b/util/processinfo_none.cpp
index c8623db6355..57f4ca30582 100644
--- a/util/processinfo_none.cpp
+++ b/util/processinfo_none.cpp
@@ -41,4 +41,6 @@ namespace mongo {
         return -1;
     }
 
+    void ProcessInfo::getExtraInfo(BSONObjBuilder& info) {}
+
 }
diff --git a/util/processinfo_win32.cpp b/util/processinfo_win32.cpp
index 111ee069b4b..0f0bf2eb1a1 100644
--- a/util/processinfo_win32.cpp
+++ b/util/processinfo_win32.cpp
@@ -60,4 +60,5 @@ namespace mongo {
         return _wconvertmtos( pmc.WorkingSetSize );
     }
 
+    void ProcessInfo::getExtraInfo(BSONObjBuilder& info) {}
 }