diff --git a/include/sys/dmu_tx.h b/include/sys/dmu_tx.h
index 74b7e11163..6a4bd3fac2 100644
--- a/include/sys/dmu_tx.h
+++ b/include/sys/dmu_tx.h
@@ -124,6 +124,7 @@ typedef struct dmu_tx_stats {
 	kstat_named_t dmu_tx_dirty_throttle;
 	kstat_named_t dmu_tx_dirty_delay;
 	kstat_named_t dmu_tx_dirty_over_max;
+	kstat_named_t dmu_tx_dirty_frees_delay;
 	kstat_named_t dmu_tx_quota;
 } dmu_tx_stats_t;
 
diff --git a/module/zfs/dmu.c b/module/zfs/dmu.c
index 0d2f03e22c..9d00098c8b 100644
--- a/module/zfs/dmu.c
+++ b/module/zfs/dmu.c
@@ -826,6 +826,7 @@ dmu_free_long_range_impl(objset_t *os, dnode_t *dn, uint64_t offset,
 		 */
 		if (dirty_frees_threshold != 0 &&
 		    long_free_dirty_all_txgs >= dirty_frees_threshold) {
+			DMU_TX_STAT_BUMP(dmu_tx_dirty_frees_delay);
 			txg_wait_open(dp, 0);
 			continue;
 		}
diff --git a/module/zfs/dmu_tx.c b/module/zfs/dmu_tx.c
index ab6ec29e77..c63ba6405a 100644
--- a/module/zfs/dmu_tx.c
+++ b/module/zfs/dmu_tx.c
@@ -53,6 +53,7 @@ dmu_tx_stats_t dmu_tx_stats = {
 	{ "dmu_tx_dirty_throttle",	KSTAT_DATA_UINT64 },
 	{ "dmu_tx_dirty_delay",		KSTAT_DATA_UINT64 },
 	{ "dmu_tx_dirty_over_max",	KSTAT_DATA_UINT64 },
+	{ "dmu_tx_dirty_frees_delay",	KSTAT_DATA_UINT64 },
 	{ "dmu_tx_quota",		KSTAT_DATA_UINT64 },
 };