diff --git a/dbus-sdr/sensorcommands.cpp b/dbus-sdr/sensorcommands.cpp
index 0e513c5..1f07299 100644
--- a/dbus-sdr/sensorcommands.cpp
+++ b/dbus-sdr/sensorcommands.cpp
@@ -496,22 +496,30 @@
 {
     std::string connection;
     std::string path;
-    ipmi::Cc status = getSensorConnection(ctx, sensorNumber, connection, path);
+    std::vector<std::string> interfaces;
+
+    ipmi::Cc status =
+        getSensorConnection(ctx, sensorNumber, connection, path, &interfaces);
     if (status)
     {
         return ipmi::response(status);
     }
 
-    DbusInterfaceMap sensorMap;
-    if (!getSensorMap(ctx, connection, path, sensorMap))
-    {
-        return ipmi::responseResponseError();
-    }
-
     // we can tell the sensor type by its interface type
-    auto sensorObject = sensorMap.find(sensor::sensorInterface);
-    if (sensorObject != sensorMap.end())
+    if (std::find(interfaces.begin(), interfaces.end(),
+                  sensor::sensorInterface) != interfaces.end())
     {
+        DbusInterfaceMap sensorMap;
+        if (!getSensorMap(ctx, connection, path, sensorMap))
+        {
+            return ipmi::responseResponseError();
+        }
+        auto sensorObject = sensorMap.find(sensor::sensorInterface);
+        if (sensorObject != sensorMap.end())
+        {
+            return ipmi::responseResponseError();
+        }
+
         auto value =
             sensor::calculateValue(reading, sensorMap, sensorObject->second);
         if (!value)
@@ -548,9 +556,20 @@
         return ipmi::responseSuccess();
     }
 
-    sensorObject = sensorMap.find(sensor::vrInterface);
-    if (sensorObject != sensorMap.end())
+    if (std::find(interfaces.begin(), interfaces.end(), sensor::vrInterface) !=
+        interfaces.end())
     {
+        DbusInterfaceMap sensorMap;
+        if (!getSensorMap(ctx, connection, path, sensorMap))
+        {
+            return ipmi::responseResponseError();
+        }
+        auto sensorObject = sensorMap.find(sensor::vrInterface);
+        if (sensorObject != sensorMap.end())
+        {
+            return ipmi::responseResponseError();
+        }
+
         // VR sensors are treated as a special case and we will not check the
         // write permission for VR sensors, since they always deemed writable
         // and permission table are not applied to VR sensors.
@@ -1313,10 +1332,8 @@
 }
 
 // Construct a type 1 SDR for threshold sensor.
-bool constructSensorSdr(uint16_t sensorNum, uint16_t recordID,
-                        const std::string& path,
-                        const DbusInterfaceMap& sensorMap,
-                        get_sdr::SensorDataFullRecord& record)
+void constructSensorSdrHeaderKey(uint16_t sensorNum, uint16_t recordID,
+                                 get_sdr::SensorDataFullRecord& record)
 {
     get_sdr::header::set_record_id(
         recordID, reinterpret_cast<get_sdr::SensorDataRecordHeader*>(&record));
@@ -1331,6 +1348,24 @@
     record.key.owner_id = bmcI2CAddr;
     record.key.owner_lun = lun;
     record.key.sensor_number = sensornumber;
+}
+bool constructSensorSdr(ipmi::Context::ptr ctx, uint16_t sensorNum,
+                        uint16_t recordID, const std::string& service,
+                        const std::string& path,
+                        get_sdr::SensorDataFullRecord& record)
+{
+    uint8_t sensornumber = static_cast<uint8_t>(sensorNum);
+    constructSensorSdrHeaderKey(sensorNum, recordID, record);
+
+    DbusInterfaceMap sensorMap;
+    if (!getSensorMap(ctx, service, path, sensorMap, sensorMapSdrUpdatePeriod))
+    {
+        phosphor::logging::log<phosphor::logging::level::ERR>(
+            "Failed to update sensor map for threshold sensor",
+            phosphor::logging::entry("SERVICE=%s", service.c_str()),
+            phosphor::logging::entry("PATH=%s", path.c_str()));
+        return false;
+    }
 
     record.body.sensor_capabilities = 0x68; // auto rearm - todo hysteresis
     record.body.sensor_type = getSensorTypeFromPath(path);
@@ -1519,10 +1554,9 @@
     return true;
 }
 
-// Construct a type 3 SDR for VR typed sensor(daemon).
-void constructVrSdr(uint16_t sensorNum, uint16_t recordID,
-                    const std::string& path, const DbusInterfaceMap& sensorMap,
-                    get_sdr::SensorDataEventRecord& record)
+// Construct type 3 SDR header and key (for VR and other discrete sensors)
+void constructEventSdrHeaderKey(uint16_t sensorNum, uint16_t recordID,
+                                get_sdr::SensorDataEventRecord& record)
 {
     uint8_t sensornumber = static_cast<uint8_t>(sensorNum);
     uint8_t lun = static_cast<uint8_t>(sensorNum >> 8);
@@ -1540,7 +1574,26 @@
 
     record.body.entity_id = 0x00;
     record.body.entity_instance = 0x01;
+}
 
+// Construct a type 3 SDR for VR typed sensor(daemon).
+bool constructVrSdr(ipmi::Context::ptr ctx, uint16_t sensorNum,
+                    uint16_t recordID, const std::string& service,
+                    const std::string& path,
+                    get_sdr::SensorDataEventRecord& record)
+{
+    uint8_t sensornumber = static_cast<uint8_t>(sensorNum);
+    constructEventSdrHeaderKey(sensorNum, recordID, record);
+
+    DbusInterfaceMap sensorMap;
+    if (!getSensorMap(ctx, service, path, sensorMap, sensorMapSdrUpdatePeriod))
+    {
+        phosphor::logging::log<phosphor::logging::level::ERR>(
+            "Failed to update sensor map for VR sensor",
+            phosphor::logging::entry("SERVICE=%s", service.c_str()),
+            phosphor::logging::entry("PATH=%s", path.c_str()));
+        return false;
+    }
     // follow the association chain to get the parent board's entityid and
     // entityInstance
     updateIpmiFromAssociation(path, sensorMap, record.body.entity_id,
@@ -1566,11 +1619,14 @@
 
     // Remember the sensor name, as determined for this sensor number
     details::sdrStatsTable.updateName(sensornumber, name);
+
+    return true;
 }
 
-static int getSensorDataRecord(ipmi::Context::ptr ctx,
-                               std::vector<uint8_t>& recordData,
-                               uint16_t recordID)
+static int
+    getSensorDataRecord(ipmi::Context::ptr ctx,
+                        std::vector<uint8_t>& recordData, uint16_t recordID,
+                        uint8_t readBytes = std::numeric_limits<uint8_t>::max())
 {
     size_t fruCount = 0;
     ipmi::Cc ret = ipmi::storage::getFruSdrCount(ctx, fruCount);
@@ -1631,20 +1687,16 @@
 
     std::string connection;
     std::string path;
-    auto status = getSensorConnection(ctx, recordID, connection, path);
+    std::vector<std::string> interfaces;
+
+    auto status =
+        getSensorConnection(ctx, recordID, connection, path, &interfaces);
     if (status)
     {
         phosphor::logging::log<phosphor::logging::level::ERR>(
             "getSensorDataRecord: getSensorConnection error");
         return GENERAL_ERROR;
     }
-    DbusInterfaceMap sensorMap;
-    if (!getSensorMap(ctx, connection, path, sensorMap, sensorMapUpdatePeriod))
-    {
-        phosphor::logging::log<phosphor::logging::level::ERR>(
-            "getSensorDataRecord: getSensorMap error");
-        return GENERAL_ERROR;
-    }
     uint16_t sensorNum = getSensorNumberFromPath(path);
     if (sensorNum == invalidSensorNumber)
     {
@@ -1653,16 +1705,24 @@
         return GENERAL_ERROR;
     }
 
-    auto sensorObject = sensorMap.find(sensor::sensorInterface);
     // Construct full record (SDR type 1) for the threshold sensors
-    if (sensorObject != sensorMap.end())
+    if (std::find(interfaces.begin(), interfaces.end(),
+                  sensor::sensorInterface) != interfaces.end())
     {
         get_sdr::SensorDataFullRecord record = {0};
 
-        if (!constructSensorSdr(sensorNum, recordID, path, sensorMap, record))
+        // If the request doesn't read SDR body, construct only header and key
+        // part to avoid additional DBus transaction.
+        if (readBytes <= sizeof(record.header) + sizeof(record.key))
+        {
+            constructSensorSdrHeaderKey(sensorNum, recordID, record);
+        }
+        else if (!constructSensorSdr(ctx, sensorNum, recordID, connection, path,
+                                     record))
         {
             return GENERAL_ERROR;
         }
+
         recordData.insert(recordData.end(), (uint8_t*)&record,
                           ((uint8_t*)&record) + sizeof(record));
 
@@ -1670,12 +1730,22 @@
     }
 
     // Contruct SDR type 3 record for VR sensor (daemon)
-    sensorObject = sensorMap.find(sensor::vrInterface);
-    if (sensorObject != sensorMap.end())
+    if (std::find(interfaces.begin(), interfaces.end(), sensor::vrInterface) !=
+        interfaces.end())
     {
         get_sdr::SensorDataEventRecord record = {0};
 
-        constructVrSdr(sensorNum, recordID, path, sensorMap, record);
+        // If the request doesn't read SDR body, construct only header and key
+        // part to avoid additional DBus transaction.
+        if (readBytes <= sizeof(record.header) + sizeof(record.key))
+        {
+            constructEventSdrHeaderKey(sensorNum, recordID, record);
+        }
+        else if (!constructVrSdr(ctx, sensorNum, recordID, connection, path,
+                                 record))
+        {
+            return GENERAL_ERROR;
+        }
         recordData.insert(recordData.end(), (uint8_t*)&record,
                           ((uint8_t*)&record) + sizeof(record));
     }
@@ -1910,7 +1980,7 @@
     }
 
     std::vector<uint8_t> record;
-    if (getSensorDataRecord(ctx, record, recordID))
+    if (getSensorDataRecord(ctx, record, recordID, offset + bytesToRead))
     {
         phosphor::logging::log<phosphor::logging::level::ERR>(
             "ipmiStorageGetSDR: fail to get SDR");