diff --git a/audio-mixer/src/main.cpp b/audio-mixer/src/main.cpp
index c19aba0a9c..5f9b79264c 100644
--- a/audio-mixer/src/main.cpp
+++ b/audio-mixer/src/main.cpp
@@ -137,15 +137,8 @@ int main(int argc, const char* argv[]) {
                 // if we should be sending stats to Logstash send the appropriate average now
                 const char MIXER_LOGSTASH_METRIC_NAME[] = "audio-mixer-frame-time-usage";
                 
-                // we're sending a floating point percentage with two mandatory numbers after decimal point
-                // that could be up to 6 bytes
-                const int MIXER_LOGSTASH_PACKET_BYTES = strlen(MIXER_LOGSTASH_METRIC_NAME) + 7;
-                char logstashPacket[MIXER_LOGSTASH_PACKET_BYTES];
-                
                 float averageFrameTimePercentage = sumFrameTimePercentages / numStatCollections;
-                int packetBytes = sprintf(logstashPacket, "%s %.2f", MIXER_LOGSTASH_METRIC_NAME, averageFrameTimePercentage);
-                
-                agentList->getAgentSocket()->send(Logstash::socket(), logstashPacket, packetBytes);
+                Logstash::stashValue(MIXER_LOGSTASH_METRIC_NAME, averageFrameTimePercentage);
                 
                 sumFrameTimePercentages = 0.0f;
                 numStatCollections = 0;
diff --git a/interface/src/Application.cpp b/interface/src/Application.cpp
index 06974743f0..6c491f8e06 100644
--- a/interface/src/Application.cpp
+++ b/interface/src/Application.cpp
@@ -44,14 +44,15 @@
 #include <QtDebug>
 #include <QFileDialog>
 #include <QDesktopServices>
-#include <PairingHandler.h>
 
 #include <AgentTypes.h>
-#include <PacketHeaders.h>
-#include <PerfStat.h>
 #include <AudioInjectionManager.h>
 #include <AudioInjector.h>
+#include <Logstash.h>
 #include <OctalCode.h>
+#include <PacketHeaders.h>
+#include <PairingHandler.h>
+#include <PerfStat.h>
 
 #include "Application.h"
 #include "InterfaceConfig.h"
@@ -286,12 +287,17 @@ void Application::initializeGL() {
     idleTimer->start(0);
     
     if (_justStarted) {
-        float startupTime = (usecTimestampNow() - usecTimestamp(&_applicationStartupTime))/1000000.0;
+        float startupTime = (usecTimestampNow() - usecTimestamp(&_applicationStartupTime)) / 1000000.0;
         _justStarted = false;
         char title[50];
         sprintf(title, "Interface: %4.2f seconds\n", startupTime);
         printLog("%s", title);
         _window->setWindowTitle(title);
+        
+        const char LOGSTASH_INTERFACE_START_TIME_KEY[] = "interface-start-time";
+        
+        // ask the Logstash class to record the startup time
+        Logstash::stashValue(LOGSTASH_INTERFACE_START_TIME_KEY, startupTime);
     }
     
     // update before the first render
diff --git a/libraries/shared/src/Logstash.cpp b/libraries/shared/src/Logstash.cpp
index dbbf7f8ec3..94279fdd4a 100644
--- a/libraries/shared/src/Logstash.cpp
+++ b/libraries/shared/src/Logstash.cpp
@@ -11,6 +11,7 @@
 #include <netdb.h>
 
 #include "SharedUtil.h"
+#include "AgentList.h"
 
 #include "Logstash.h"
 
@@ -42,4 +43,18 @@ sockaddr* Logstash::socket() {
 bool Logstash::shouldSendStats() {
     static bool shouldSendStats = isInEnvironment("production");
     return shouldSendStats;
+}
+
+void Logstash::stashValue(const char* key, float value) {
+    static char logstashPacket[MAX_PACKET_SIZE];
+    
+    // load up the logstash packet with the key and the passed float value
+    // send it to 4 decimal places
+    int numPacketBytes = sprintf(logstashPacket, "%s %.4f", key, value);
+    
+    AgentList *agentList = AgentList::getInstance();
+    
+    if (agentList) {
+        agentList->getAgentSocket()->send(socket(), logstashPacket, numPacketBytes);
+    }
 }
\ No newline at end of file
diff --git a/libraries/shared/src/Logstash.h b/libraries/shared/src/Logstash.h
index 20f58b8057..5f2d247218 100644
--- a/libraries/shared/src/Logstash.h
+++ b/libraries/shared/src/Logstash.h
@@ -18,6 +18,7 @@ class Logstash {
 public:
     static sockaddr* socket();
     static bool shouldSendStats();
+    static void stashValue(const char* key, float value);
 private:
     static sockaddr_in logstashSocket;
 };