diff --git a/oam/oamcpp/liboamcpp.cpp b/oam/oamcpp/liboamcpp.cpp
index fc40b5462..3d35f35b7 100644
--- a/oam/oamcpp/liboamcpp.cpp
+++ b/oam/oamcpp/liboamcpp.cpp
@@ -278,11 +278,11 @@ namespace oam
         const string MODULE_TYPE = "ModuleType";
         systemmoduletypeconfig.moduletypeconfig.clear();
 
+        Config* sysConfig = Config::makeConfig(CalpontConfigFile.c_str());
+
         for (int moduleTypeID = 1; moduleTypeID < MAX_MODULE_TYPE+1; moduleTypeID++)
         {
         	ModuleTypeConfig moduletypeconfig;
-	
-            Config* sysConfig = Config::makeConfig(CalpontConfigFile.c_str());
 
             // get Module info
 
@@ -375,7 +375,7 @@ namespace oam
 
 				int moduleFound = 0;
 				//get NIC IP address/hostnames
-				for (int moduleID = 1; moduleID < MAX_MODULE ; moduleID++)
+				for (int moduleID = 1; moduleID <= moduletypeconfig.ModuleCount ; moduleID++)
 				{
 					DeviceNetworkConfig devicenetworkconfig;
 					HostConfig hostconfig;
@@ -385,7 +385,9 @@ namespace oam
 						string ModuleIpAddr = MODULE_IP_ADDR + itoa(moduleID) + "-" + itoa(nicID) + "-" + itoa(moduleTypeID);
 	
 						string ipAddr = sysConfig->getConfig(Section, ModuleIpAddr);
-						if (ipAddr.empty() || ipAddr == UnassignedIpAddr )
+						if (ipAddr.empty())
+                            break;
+                        else if (ipAddr == UnassignedIpAddr )
 							continue;
 	
 						string ModuleHostName = MODULE_SERVER_NAME + itoa(moduleID) + "-" + itoa(nicID) + "-" + itoa(moduleTypeID);
@@ -428,7 +430,7 @@ namespace oam
 
 				// get dbroot IDs
 				moduleFound = 0;
-				for (int moduleID = 1; moduleID < MAX_MODULE+1 ; moduleID++)
+				for (int moduleID = 1; moduleID <= moduletypeconfig.ModuleCount ; moduleID++)
 				{
 					string ModuleDBRootCount = MODULE_DBROOT_COUNT + itoa(moduleID) + "-" + itoa(moduleTypeID);
 					string temp = sysConfig->getConfig(Section, ModuleDBRootCount).c_str();
@@ -1925,12 +1927,12 @@ namespace oam
         const string SECTION_NAME = "PROCESSCONFIG";
         systemprocessconfig.processconfig.clear();
 
+        Config* proConfig = Config::makeConfig(ProcessConfigFile.c_str());
+
         for (int processID = 1; processID < MAX_PROCESS+1; processID++)
         {
 	        ProcessConfig processconfig;
 
-            Config* proConfig = Config::makeConfig(ProcessConfigFile.c_str());
-
             // get process info
 
             string sectionName = SECTION_NAME + itoa(processID);
diff --git a/utils/common/cgroupconfigurator.cpp b/utils/common/cgroupconfigurator.cpp
index 933be1901..1c3046af6 100644
--- a/utils/common/cgroupconfigurator.cpp
+++ b/utils/common/cgroupconfigurator.cpp
@@ -141,29 +141,7 @@ uint32_t CGroupConfigurator::getNumCoresFromProc()
 	GetSystemInfo(&siSysInfo);
 	return siSysInfo.dwNumberOfProcessors;
 #else
-	ifstream cpuinfo("/proc/cpuinfo");
-
-	if (!cpuinfo.good())
-		return 0;
-
-	unsigned nc = 0;
-
-	regex re("Processor\\s*:\\s*[0-9]+", regex::normal|regex::icase);
-
-	string line;
-
-	getline(cpuinfo, line);
-
-	unsigned i = 0;
-	while (i < 10000 && cpuinfo.good() && !cpuinfo.eof())
-	{
-		if (regex_match(line, re))
-			nc++;
-
-		getline(cpuinfo, line);
-
-		++i;
-	}
+    uint32_t nc = sysconf(_SC_NPROCESSORS_ONLN);
 
 	return nc;
 #endif
diff --git a/utils/configcpp/configcpp.cpp b/utils/configcpp/configcpp.cpp
index aac8fb946..c14e82865 100644
--- a/utils/configcpp/configcpp.cpp
+++ b/utils/configcpp/configcpp.cpp
@@ -32,6 +32,7 @@ using namespace std;
 
 #include <boost/thread.hpp>
 #include <boost/filesystem.hpp>
+#include <boost/unordered_map.hpp>
 using namespace boost;
 namespace fs=boost::filesystem;
 
@@ -82,8 +83,9 @@ Config* Config::makeConfig(const char* cf)
 {
 	mutex::scoped_lock lk(fInstanceMapMutex);
 
-	string configFile;
-	string installDir = startup::StartUp::installDir();
+	static string installDir;
+    if (installDir.empty())
+        installDir = startup::StartUp::installDir();
 
 	if (cf == 0)
 	{
@@ -96,18 +98,22 @@ Config* Config::makeConfig(const char* cf)
 #endif
 		if (cf == 0 || *cf == 0)
 		{
-			fs::path configFilePath = fs::path(installDir) / fs::path("etc") / defaultCalpontConfigFile;
-			configFile = configFilePath.string();
-		}
-		else
-		{
-			configFile = cf;
+            static string defaultFilePath;
+            if (defaultFilePath.empty())
+            {
+                fs::path configFilePath;
+                configFilePath = fs::path(installDir) / fs::path("etc") / defaultCalpontConfigFile;
+                defaultFilePath = configFilePath.string();
+            }
+            if (fInstanceMap.find(defaultFilePath) == fInstanceMap.end())
+        	{
+        		Config* instance = new Config(defaultFilePath, installDir);
+        		fInstanceMap[defaultFilePath] = instance;
+        	}
+            return fInstanceMap[defaultFilePath];
 		}
 	}
-	else
-	{
-		configFile = cf;
-	}
+	string configFile(cf);
 
 	if (fInstanceMap.find(configFile) == fInstanceMap.end())
 	{
@@ -241,7 +247,7 @@ const string Config::getConfig(const string& section, const string& name)
 		}
 	}
 
-	return fParser.getConfig(fDoc, section, name);
+    return fParser.getConfig(fDoc, section, name);
 }
 
 void Config::getConfig(const string& section, const string& name, vector<string>& values)
diff --git a/utils/rowgroup/rowgroup.cpp b/utils/rowgroup/rowgroup.cpp
index d18d70212..c3685ab57 100644
--- a/utils/rowgroup/rowgroup.cpp
+++ b/utils/rowgroup/rowgroup.cpp
@@ -800,7 +800,14 @@ int64_t Row::getSignedNullValue(uint32_t colIndex) const
 
 RowGroup::RowGroup() : columnCount(0), data(NULL), rgData(NULL), strings(NULL),
 	useStringTable(true), hasLongStringField(false), sTableThreshold(20)
-{ }
+{
+    oldOffsets.reserve(1024);
+    oids.reserve(1024);
+    keys.reserve(1024);
+    types.reserve(1024);
+    scale.reserve(1024);
+    precision.reserve(1024);
+}
 
 RowGroup::RowGroup(uint32_t colCount,
 	const vector<uint32_t> &positions,