diff --git a/srtcore/buffer_rcv.h b/srtcore/buffer_rcv.h
index 02e48ad66..1f5a23bfe 100644
--- a/srtcore/buffer_rcv.h
+++ b/srtcore/buffer_rcv.h
@@ -196,6 +196,8 @@ class CRcvBuffer
     }
 
     int64_t getDrift() const { return m_tsbpd.drift(); }
+    int64_t getOverdrift() const { return m_tsbpd.overdrift(); }
+    int64_t getCumulativeOverdrift() const { return m_tsbpd.cumulativeoverdrift(); }
 
     // TODO: make thread safe?
     int debugGetSize() const
diff --git a/srtcore/core.cpp b/srtcore/core.cpp
index c099fe671..2cc1e0e63 100644
--- a/srtcore/core.cpp
+++ b/srtcore/core.cpp
@@ -7348,6 +7348,7 @@ void srt::CUDT::bstats(CBytePerfMon *perf, bool clear, bool instantaneous)
             {
                 perf->pktRcvBuf = m_pRcvBuffer->getRcvAvgDataSize(perf->byteRcvBuf, perf->msRcvBuf);
             }
+            perf->usRcvCumulativeOverdrift = m_pRcvBuffer->getCumulativeOverdrift();
         }
         else
         {
@@ -7355,6 +7356,7 @@ void srt::CUDT::bstats(CBytePerfMon *perf, bool clear, bool instantaneous)
             perf->pktRcvBuf  = 0;
             perf->byteRcvBuf = 0;
             perf->msRcvBuf   = 0;
+            perf->usRcvCumulativeOverdrift = 0;
         }
 
         leaveCS(m_ConnectionLock);
@@ -7368,6 +7370,7 @@ void srt::CUDT::bstats(CBytePerfMon *perf, bool clear, bool instantaneous)
         perf->msSndBuf   = 0;
         perf->byteRcvBuf = 0;
         perf->msRcvBuf   = 0;
+        perf->usRcvCumulativeOverdrift = 0;
     }
 }
 
diff --git a/srtcore/srt.h b/srtcore/srt.h
index c9098d259..3835bfa6f 100644
--- a/srtcore/srt.h
+++ b/srtcore/srt.h
@@ -381,6 +381,7 @@ struct CBytePerfMon
    int      byteRcvBuf;                 // Undelivered bytes of UDT receiver
    int      msRcvBuf;                   // Undelivered timespan (msec) of UDT receiver
    int      msRcvTsbPdDelay;            // Timestamp-based Packet Delivery Delay
+   int64_t  usRcvCumulativeOverdrift;   // Cumulative overdrift, in microseconds
 
    int      pktSndFilterExtraTotal;     // number of control packets supplied by packet filter
    int      pktRcvFilterExtraTotal;     // number of control packets received and not supplied back
diff --git a/srtcore/tsbpd_time.cpp b/srtcore/tsbpd_time.cpp
index 046c90b74..c6c17d2d4 100644
--- a/srtcore/tsbpd_time.cpp
+++ b/srtcore/tsbpd_time.cpp
@@ -38,6 +38,7 @@ class drift_logger
                int64_t                                    drift_sample,
                int64_t                                    drift,
                int64_t                                    overdrift,
+               int64_t                                    cumulativeoverdrift,
                const srt::sync::steady_clock::time_point& pkt_base,
                const srt::sync::steady_clock::time_point& tsbpd_base)
     {
@@ -61,6 +62,7 @@ class drift_logger
         m_fout << drift_sample << ",";
         m_fout << drift << ",";
         m_fout << overdrift << ",";
+        m_fout << cumulativeoverdrift << ",";
         m_fout << str_pkt_base << ",";
         m_fout << str_tbase << "\n";
         m_fout.flush();
@@ -70,7 +72,7 @@ class drift_logger
     void print_header()
     {
         m_fout << "usElapsedStd,usAckAckTimestampStd,";
-        m_fout << "usRTTStd,usDriftSampleStd,usDriftStd,usOverdriftStd,tsPktBase,TSBPDBase\n";
+        m_fout << "usRTTStd,usDriftSampleStd,usDriftStd,usOverdriftStd,usCumulativeOverdriftStd,tsPktBase,TSBPDBase\n";
     }
 
     void create_file()
@@ -150,6 +152,7 @@ bool CTsbpdTime::addDriftSample(uint32_t usPktTimestamp, const time_point& tsPkt
                          count_microseconds(tdDrift),
                          m_DriftTracer.drift(),
                          m_DriftTracer.overdrift(),
+                         m_DriftTracer.cumulativeoverdrift(),
                          tsPktBaseTime,
                          m_tsTsbPdTimeBase);
 #endif
diff --git a/srtcore/tsbpd_time.h b/srtcore/tsbpd_time.h
index 3483c197f..3272495e6 100644
--- a/srtcore/tsbpd_time.h
+++ b/srtcore/tsbpd_time.h
@@ -110,6 +110,10 @@ class CTsbpdTime
     /// @return current overdrift value.
     int64_t    overdrift() const { return m_DriftTracer.overdrift(); }
 
+    /// @brief Get current cumulative overdrift value.
+    /// @return current cumulative overdrift value.
+    int64_t    cumulativeoverdrift() const { return m_DriftTracer.cumulativeoverdrift(); }
+
     /// @brief Get internal state to apply to another member of a socket group.
     /// @param w_tb TsbPd base time.
     /// @param w_udrift drift value.
diff --git a/srtcore/utilities.h b/srtcore/utilities.h
index 31e05b205..503e11918 100644
--- a/srtcore/utilities.h
+++ b/srtcore/utilities.h
@@ -824,6 +824,7 @@ class DriftTracer
 {
     int64_t  m_qDrift;
     int64_t  m_qOverdrift;
+    int64_t  m_qCumulativeOverdrift;
 
     int64_t  m_qDriftSum;
     unsigned m_uDriftSpan;
@@ -832,6 +833,7 @@ class DriftTracer
     DriftTracer()
         : m_qDrift(0)
         , m_qOverdrift(0)
+        , m_qCumulativeOverdrift(0)
         , m_qDriftSum(0)
         , m_uDriftSpan(0)
     {}
@@ -865,6 +867,7 @@ class DriftTracer
         {
             m_qOverdrift = m_qDrift < 0 ? -MAX_DRIFT : MAX_DRIFT;
             m_qDrift -= m_qOverdrift;
+            m_qCumulativeOverdrift += m_qOverdrift;
         }
 
         // printDriftOffset(m_qOverdrift, m_qDrift);
@@ -904,6 +907,7 @@ class DriftTracer
     // overdrift.
     int64_t drift() const { return m_qDrift; }
     int64_t overdrift() const { return m_qOverdrift; }
+    int64_t cumulativeoverdrift() const { return m_qCumulativeOverdrift; }
 };
 
 template <class KeyType, class ValueType>