vcl: set min threshold for tx ntf

[vpp.git] / src / vcl / vcl_private.h

diff --git a/src/vcl/vcl_private.h b/src/vcl/vcl_private.h
index 8345e34..41a11b7 100644 (file)
--- a/src/vcl/vcl_private.h
+++ b/src/vcl/vcl_private.h
@@ -675,7 +675,11 @@ vcl_session_add_want_deq_ntf (vcl_session_t *s, svm_fifo_deq_ntf_t evt)
 {
   svm_fifo_t *txf = vcl_session_is_ct (s) ? s->ct_tx_fifo : s->tx_fifo;
   if (txf)
-    svm_fifo_add_want_deq_ntf (txf, evt);
+    {
+      svm_fifo_add_want_deq_ntf (txf, evt);
+      /* Request tx notification only if 3% of fifo is empty */
+      svm_fifo_set_deq_thresh (txf, 0.03 * svm_fifo_size (txf));
+    }
 }
 
 static inline void