2 files changed, 17 insertions, 3 deletions
diff --git a/tracker-hatire/thread.cpp b/tracker-hatire/thread.cpp
index ace4198c..e0bd445f 100755
--- a/tracker-hatire/thread.cpp
+++ b/tracker-hatire/thread.cpp
@@ -294,9 +294,6 @@ void hatire_thread::serial_info_impl()
 
 void hatire_thread::on_serial_read()
 {
-    constexpr int hz = 90;
-    constexpr int ms = 1000/hz;
-
     {
         QMutexLocker lck(&data_mtx);
 #ifndef HATIRE_DEBUG_LOGFILE
@@ -311,8 +308,20 @@ void hatire_thread::on_serial_read()
         }
 #endif
     }
+
+    stat.input(timer.elapsed_ms());
+    timer.start();
+
+    if (throttle_timer.elapsed_ms() >= 1000)
+    {
+        throttle_timer.start();
+        qDebug() << "stat:" << "avg" << stat.avg() << "stddev" << stat.stddev();
+    }
+
     // qt can fire QSerialPort::readyRead() needlessly, causing a busy loop.
     // see https://github.com/opentrack/opentrack/issues/327#issuecomment-207941003
+    constexpr int hz = 90;
+    constexpr int ms = 1000/hz;
     portable::sleep(ms);
 }
 
diff --git a/tracker-hatire/thread.hpp b/tracker-hatire/thread.hpp
index f36d114e..44866e51 100755
--- a/tracker-hatire/thread.hpp
+++ b/tracker-hatire/thread.hpp
@@ -8,6 +8,9 @@
 #include <QFile>
 #include <QCoreApplication>
 
+#include "opentrack/variance.hpp"
+#include "opentrack-compat/timer.hpp"
+
 enum results
 {
     result_ok,
@@ -100,6 +103,8 @@ class hatire_thread : public QThread
     QByteArray data_read;
     serial_t com_port;
     thread_settings s;
+    variance stat;
+    Timer timer, throttle_timer;
 
     void run() override;