regression: stateless CPU benchmark for profiles

14 files changed, 1240 insertions, 64 deletions

diff --git a/scripts/automation/regression/setups/kiwi02/benchmark.yaml b/scripts/automation/regression/setups/kiwi02/benchmark.yaml
index def062dc..49d86003 100644
--- a/scripts/automation/regression/setups/kiwi02/benchmark.yaml
+++ b/scripts/automation/regression/setups/kiwi02/benchmark.yaml
@@ -19,7 +19,7 @@ nat_dict: &nat_dict
     pool_netmask             : 255.255.255.0
 
 
-### tests ###
+### stateful ###
 
 test_jumbo:
     multiplier          : 55
@@ -119,3 +119,127 @@ test_rx_check_sfr_ipv6:
     bw_per_core         : 20323
 
 
+
+### stateless ###
+
+test_CPU_benchmark:
+    profiles:
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64, packet_count: 10}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64, packet_count: 100}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+# causes queue full
+#      - name            : stl/udp_1pkt_simple.py
+#        kwargs          : {packet_len: 64, packet_count: 1000}
+#        cpu_util        : 1
+#        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 256}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 512}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 1500}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 4000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 10}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 100}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 1000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/imix.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 256}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 512}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 1500}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 4000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 9000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/pcap.py
+        kwargs          : {ipg_usec: 2, loop_count: 0}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_rand_len_9k.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/hlt/hlt_udp_rand_len_9k.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+
diff --git a/scripts/automation/regression/setups/trex-dan/benchmark.yaml b/scripts/automation/regression/setups/trex-dan/benchmark.yaml
index fde94f94..255fd1ba 100644
--- a/scripts/automation/regression/setups/trex-dan/benchmark.yaml
+++ b/scripts/automation/regression/setups/trex-dan/benchmark.yaml
@@ -19,7 +19,7 @@ nat_dict: &nat_dict
     pool_netmask             : 255.255.255.0
 
 
-### tests ###
+### stateful ###
 
 test_jumbo:
     multiplier          : 2.8
@@ -124,3 +124,127 @@ test_rx_check_sfr_ipv6:
     bw_per_core         : 4773
 
 
+
+### stateless ###
+
+test_CPU_benchmark:
+    profiles:
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64, packet_count: 10}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64, packet_count: 100}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+# causes queue full
+#      - name            : stl/udp_1pkt_simple.py
+#        kwargs          : {packet_len: 64, packet_count: 1000}
+#        cpu_util        : 1
+#        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 256}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 512}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 1500}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 4000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 10}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 100}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 1000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/imix.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 256}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 512}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 1500}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 4000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 9000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/pcap.py
+        kwargs          : {ipg_usec: 2, loop_count: 0}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_rand_len_9k.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/hlt/hlt_udp_rand_len_9k.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+
diff --git a/scripts/automation/regression/setups/trex04/benchmark.yaml b/scripts/automation/regression/setups/trex04/benchmark.yaml
index 9860a371..bebaef07 100644
--- a/scripts/automation/regression/setups/trex04/benchmark.yaml
+++ b/scripts/automation/regression/setups/trex04/benchmark.yaml
@@ -2,6 +2,7 @@
 ####           T-Rex benchmark configuration file           ####
 ################################################################
 
+### stateful ###
 
 test_jumbo:
     multiplier          : 2.8
@@ -27,3 +28,139 @@ test_static_routing_imix_asymmetric:
     bw_per_core         : 13742
 
 
+test_CPU_benchmark:
+    profiles:
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+
+### stateless ###
+
+test_CPU_benchmark:
+    profiles:
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64, packet_count: 10}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64, packet_count: 100}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+# causes queue full
+#      - name            : stl/udp_1pkt_simple.py
+#        kwargs          : {packet_len: 64, packet_count: 1000}
+#        cpu_util        : 1
+#        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 256}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 512}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 1500}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 4000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 10}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 100}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 1000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/imix.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 256}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 512}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 1500}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 4000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 9000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/pcap.py
+        kwargs          : {ipg_usec: 2, loop_count: 0}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_rand_len_9k.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/hlt/hlt_udp_rand_len_9k.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+
diff --git a/scripts/automation/regression/setups/trex08/benchmark.yaml b/scripts/automation/regression/setups/trex08/benchmark.yaml
index 79f727cc..19749848 100644
--- a/scripts/automation/regression/setups/trex08/benchmark.yaml
+++ b/scripts/automation/regression/setups/trex08/benchmark.yaml
@@ -2,6 +2,7 @@
 ####           TRex benchmark configuration file           ####
 ###############################################################
 
+### stateful ###
 
 test_jumbo:
     multiplier          : 150
@@ -47,3 +48,127 @@ test_rx_check_sfr:
     bw_per_core         : 20871
 
 
+
+### stateless ###
+
+test_CPU_benchmark:
+    profiles:
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64, packet_count: 10}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64, packet_count: 100}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+# causes queue full
+#      - name            : stl/udp_1pkt_simple.py
+#        kwargs          : {packet_len: 64, packet_count: 1000}
+#        cpu_util        : 1
+#        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 256}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 512}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 1500}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 4000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 10}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 100}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 1000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/imix.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 256}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 512}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 1500}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 4000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 9000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/pcap.py
+        kwargs          : {ipg_usec: 2, loop_count: 0}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_rand_len_9k.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/hlt/hlt_udp_rand_len_9k.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+
diff --git a/scripts/automation/regression/setups/trex09/benchmark.yaml b/scripts/automation/regression/setups/trex09/benchmark.yaml
index bb90acb0..b5397a9f 100644
--- a/scripts/automation/regression/setups/trex09/benchmark.yaml
+++ b/scripts/automation/regression/setups/trex09/benchmark.yaml
@@ -2,6 +2,7 @@
 ####           T-Rex benchmark configuration file           ####
 ################################################################
 
+### stateful ###
 
 test_jumbo:
     multiplier          : 110
@@ -47,3 +48,127 @@ test_rx_check_sfr:
     bw_per_core         : 20469
 
 
+
+### stateless ###
+
+test_CPU_benchmark:
+    profiles:
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64, packet_count: 10}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64, packet_count: 100}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+# causes queue full
+#      - name            : stl/udp_1pkt_simple.py
+#        kwargs          : {packet_len: 64, packet_count: 1000}
+#        cpu_util        : 1
+#        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 256}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 512}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 1500}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 4000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 10}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 100}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 1000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/imix.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 256}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 512}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 1500}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 4000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 9000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/pcap.py
+        kwargs          : {ipg_usec: 2, loop_count: 0}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_rand_len_9k.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/hlt/hlt_udp_rand_len_9k.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+
diff --git a/scripts/automation/regression/setups/trex11/config.yaml b/scripts/automation/regression/setups/trex11/config.yaml
index 876a1afd..7bb5b6d4 100644
--- a/scripts/automation/regression/setups/trex11/config.yaml
+++ b/scripts/automation/regression/setups/trex11/config.yaml
@@ -34,36 +34,5 @@
 
 trex:
   hostname       : csi-trex-11
-  cores          : 2
+  cores          : 1
   modes          : ['loopback', 'virtual']
-
-router:
-  model          : 1RU
-  hostname       : ASR1001_T-Rex
-#  ip_address     : 10.56.199.247
-  ip_address     : 10.56.199.247123123123
-  image          : asr1001-universalk9.BLD_V155_1_S_XE314_THROTTLE_LATEST_20141112_090734-std.bin
-  #image          : asr1001-universalk9.BLD_V155_2_S_XE315_THROTTLE_LATEST_20150121_110036-std.bin
-  #image          : asr1001-universalk9.BLD_V155_2_S_XE315_THROTTLE_LATEST_20150324_100047-std.bin
-  line_password  : lab
-  en_password    : lab
-  mgmt_interface : GigabitEthernet0/0/0
-  clean_config   : /Configurations/danklei/asr1001_TRex_clean_config.cfg
-  intf_masking   : 255.255.255.0
-  ipv6_mask      : 64
-  interfaces     :
-    - client : 
-        name          : GigabitEthernet0/0/1
-        src_mac_addr  : 0000.0001.0000
-        dest_mac_addr : 0000.0001.0000
-      server : 
-        name          : GigabitEthernet0/0/2
-        src_mac_addr  : 0000.0001.0000
-        dest_mac_addr : 0000.0001.0000
-      vrf_name      : null    
-
-tftp:
-  hostname       : ats-asr-srv-1
-  ip_address     : 10.56.128.23
-  root_dir       : /auto/avc-devtest/
-  images_path    : /images/1RU/
diff --git a/scripts/automation/regression/setups/trex12/benchmark.yaml b/scripts/automation/regression/setups/trex12/benchmark.yaml
index 1f4e82b5..5a30214c 100644
--- a/scripts/automation/regression/setups/trex12/benchmark.yaml
+++ b/scripts/automation/regression/setups/trex12/benchmark.yaml
@@ -2,53 +2,180 @@
 ####           TRex benchmark configuration file           ####
 ###############################################################
 
+### stateful ###
+
 test_jumbo:
     multiplier          : 14
     cores               : 1
-    bw_per_core         : 540208
+    bw_per_core         : 689664
 
 
 test_routing_imix:
     multiplier          : 8
     cores               : 1
-    bw_per_core         : 34128
+    bw_per_core         : 45422
 
 
 test_routing_imix_64:
     multiplier          : 2200
     cores               : 1
-    bw_per_core         : 5893
+    bw_per_core         : 11655
 
 
 test_static_routing_imix_asymmetric:
     multiplier          : 4
     cores               : 1
-    bw_per_core         : 34339
+    bw_per_core         : 45294
 
 
 test_ipv6_simple:
     multiplier          : 8
     cores               : 1
-    bw_per_core         : 19064
+    bw_per_core         : 29332
 
 
 test_rx_check_http: &rx_http
     multiplier          : 11000
     cores               : 1
     rx_sample_rate      : 16
-    bw_per_core         : 39560
+    bw_per_core         : 47813
 
 test_rx_check_http_ipv6:
     <<                  : *rx_http
-    bw_per_core         : 49237
+    bw_per_core         : 55607
 
 
 test_rx_check_sfr: &rx_sfr
     multiplier          : 8
     cores               : 1
     rx_sample_rate      : 16
-    bw_per_core         : 16082
+    bw_per_core         : 24203
 
 test_rx_check_sfr_ipv6:
     <<                  : *rx_sfr
-    bw_per_core         : 19198
+    bw_per_core         : 28867
+
+
+### stateless ###
+
+test_CPU_benchmark:
+    profiles:
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64, packet_count: 10}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64, packet_count: 100}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+# causes queue full
+#      - name            : stl/udp_1pkt_simple.py
+#        kwargs          : {packet_len: 64, packet_count: 1000}
+#        cpu_util        : 1
+#        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 256}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 512}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 1500}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 4000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 10}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 100}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 1000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/imix.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 256}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 512}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 1500}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 4000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 9000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/pcap.py
+        kwargs          : {ipg_usec: 2, loop_count: 0}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_rand_len_9k.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/hlt/hlt_udp_rand_len_9k.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+
diff --git a/scripts/automation/regression/setups/trex14/benchmark.yaml b/scripts/automation/regression/setups/trex14/benchmark.yaml
index 8da359db..5857cd2c 100644
--- a/scripts/automation/regression/setups/trex14/benchmark.yaml
+++ b/scripts/automation/regression/setups/trex14/benchmark.yaml
@@ -19,7 +19,7 @@ nat_dict: &nat_dict
     pool_netmask             : 255.255.255.0
 
 
-### tests ###
+### stateful ###
 
 test_jumbo:
     multiplier          : 17
@@ -119,5 +119,126 @@ test_rx_check_sfr_ipv6:
 
 
 
+### stateless ###
+
+test_CPU_benchmark:
+    profiles:
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64, packet_count: 10}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64, packet_count: 100}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+# causes queue full
+#      - name            : stl/udp_1pkt_simple.py
+#        kwargs          : {packet_len: 64, packet_count: 1000}
+#        cpu_util        : 1
+#        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 256}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 512}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 1500}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 4000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 10}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 100}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 1000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/imix.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 256}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 512}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 1500}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 4000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 9000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/pcap.py
+        kwargs          : {ipg_usec: 2, loop_count: 0}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_rand_len_9k.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/hlt/hlt_udp_rand_len_9k.py
+        cpu_util        : 1
+        bw_per_core     : 1
 
 
diff --git a/scripts/automation/regression/setups/trex17/benchmark.yaml b/scripts/automation/regression/setups/trex17/benchmark.yaml
index 60860f54..1d792fe5 100644
--- a/scripts/automation/regression/setups/trex17/benchmark.yaml
+++ b/scripts/automation/regression/setups/trex17/benchmark.yaml
@@ -2,6 +2,7 @@
 ####           T-Rex benchmark configuration file           ####
 ################################################################
 
+### stateful ###
 
 test_jumbo:
     multiplier          : 2.8
@@ -27,3 +28,127 @@ test_static_routing_imix_asymmetric:
     bw_per_core         : 9635
 
 
+
+### stateless ###
+
+test_CPU_benchmark:
+    profiles:
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64, packet_count: 10}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64, packet_count: 100}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+# causes queue full
+#      - name            : stl/udp_1pkt_simple.py
+#        kwargs          : {packet_len: 64, packet_count: 1000}
+#        cpu_util        : 1
+#        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 256}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 512}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 1500}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 4000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 10}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 100}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 1000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/imix.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 256}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 512}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 1500}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 4000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 9000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/pcap.py
+        kwargs          : {ipg_usec: 2, loop_count: 0}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_rand_len_9k.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/hlt/hlt_udp_rand_len_9k.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+
diff --git a/scripts/automation/regression/setups/trex25/benchmark.yaml b/scripts/automation/regression/setups/trex25/benchmark.yaml
index df9eaef3..6a0021de 100644
--- a/scripts/automation/regression/setups/trex25/benchmark.yaml
+++ b/scripts/automation/regression/setups/trex25/benchmark.yaml
@@ -19,7 +19,7 @@ nat_dict: &nat_dict
     pool_netmask             : 255.255.255.0
 
 
-### tests ###
+### stateful ###
 
 test_jumbo:
     multiplier          : 6
@@ -124,3 +124,126 @@ test_rx_check_sfr_ipv6:
     bw_per_core         : 19663
 
 
+### stateless ###
+
+test_CPU_benchmark:
+    profiles:
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64, packet_count: 10}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 64, packet_count: 100}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+# causes queue full
+#      - name            : stl/udp_1pkt_simple.py
+#        kwargs          : {packet_len: 64, packet_count: 1000}
+#        cpu_util        : 1
+#        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 256}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 512}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 1500}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 4000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 10}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 100}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_simple.py
+        kwargs          : {packet_len: 9000, packet_count: 1000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/imix.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 64}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 128}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 256}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 512}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 1500}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 4000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_1pkt_tuple_gen.py
+        kwargs          : {packet_len: 9000}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/pcap.py
+        kwargs          : {ipg_usec: 2, loop_count: 0}
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/udp_rand_len_9k.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+      - name            : stl/hlt/hlt_udp_rand_len_9k.py
+        cpu_util        : 1
+        bw_per_core     : 1
+
+
diff --git a/scripts/automation/regression/stateless_tests/stl_benchmark_test.py b/scripts/automation/regression/stateless_tests/stl_benchmark_test.py
new file mode 100755
index 00000000..65efa55e
--- /dev/null
+++ b/scripts/automation/regression/stateless_tests/stl_benchmark_test.py
@@ -0,0 +1,46 @@
+#!/router/bin/python
+from .stl_general_test import CStlGeneral_Test, CTRexScenario
+from trex_stl_lib.api import *
+import os, sys
+from collections import deque
+from time import time, sleep
+
+class STLBenchmark_Test(CStlGeneral_Test):
+    """Benchark stateless performance"""
+
+    def test_CPU_benchmark(self):
+        timeout   = 30 # max time to wait for stabilization
+        stabilize = 5  # ensure stabilization over this period
+
+        for profile_bench in self.get_benchmark_param('profiles'):
+            cpu_utils = deque([0] * stabilize, maxlen = stabilize)
+            kwargs = profile_bench.get('kwargs', {})
+            print('Testing profile %s, kwargs: %s' % (profile_bench['name'], kwargs))
+            profile = STLProfile.load(os.path.join(CTRexScenario.scripts_path, profile_bench['name']), port_id = 0, **kwargs)
+
+            self.stl_trex.reset()
+            self.stl_trex.clear_stats()
+            self.stl_trex.add_streams(profile, ports = [0, 1])
+            self.stl_trex.start(ports = [0, 1], mult = '10%')
+            start_time = time()
+
+            for i in range(timeout + 1):
+                stats = self.stl_trex.get_stats()
+                cpu_utils.append(stats['global']['cpu_util'])
+                print stats['global']['cpu_util']
+                if i > stabilize and min(cpu_utils) > max(cpu_utils) * 0.98 - 0.1:
+                    break
+                sleep(0.5)
+
+            if i == timeout:
+                raise Exception('Timeout on waiting for stabilization, CPU util values: %s' % cpu_utils)
+            if stats[0]['opackets'] < 10000 or stats[1]['opackets'] < 10000:
+                raise Exception('Too few opackets, port0: %s, port1: %s' % (stats[0]['opackets'], stats[1]['opackets']))
+            print stats['global']
+            if stats['global']['queue_full'] > 100000:
+                raise Exception('Too much queue_full: %s' % stats['global']['queue_full'])
+
+            bw_per_core = 100 * stats['global']['tx_bps'] / cpu_utils[-1] / 1e6
+            print('Done (%ss), CPU util: %4g, bw_per_core: %6sMb/core' % (int(time() - start_time), cpu_utils[-1], int(bw_per_core)))
+
+
diff --git a/scripts/stl/hlt/hlt_udp_rand_len_9k.py b/scripts/stl/hlt/hlt_udp_rand_len_9k.py
new file mode 100755
index 00000000..1966823c
--- /dev/null
+++ b/scripts/stl/hlt/hlt_udp_rand_len_9k.py
@@ -0,0 +1,31 @@
+from trex_stl_lib.trex_stl_hltapi import STLHltStream
+
+
+class STLS1(object):
+    '''
+    Create Eth/IP/UDP steam with random packet size (L3 size from 50 to 9*1024)
+    '''
+
+    def get_streams (self, direction = 0, **kwargs):
+        min_size = 50
+        max_size = 9*1024
+        return [STLHltStream(length_mode   = 'random',
+                             l3_length_min = min_size,
+                             l3_length_max = max_size,
+                             l3_protocol   = 'ipv4',
+                             ip_src_addr   = '16.0.0.1',
+                             ip_dst_addr   = '48.0.0.1',
+                             l4_protocol   = 'udp',
+                             udp_src_port  = 1025,
+                             udp_dst_port  = 12,
+                             rate_pps      = 1000,
+                             ignore_macs   = True,
+                             )
+               ]
+
+# dynamic load - used for trex console or simulator
+def register():
+    return STLS1()
+
+
+
diff --git a/scripts/stl/udp_1pkt_simple.py b/scripts/stl/udp_1pkt_simple.py
index 0407f9c9..b84626a1 100644
--- a/scripts/stl/udp_1pkt_simple.py
+++ b/scripts/stl/udp_1pkt_simple.py
@@ -2,18 +2,21 @@ from trex_stl_lib.api import *
 
 class STLS1(object):
 
-    def create_stream (self):
-        return STLStream( 
-            packet = 
-                    STLPktBuilder(
-                        pkt = Ether()/IP(src="16.0.0.1",dst="48.0.0.1")/
-                                UDP(dport=12,sport=1025)/(10*'x')
-                    ),
-             mode = STLTXCont())
-
-    def get_streams (self, direction = 0, **kwargs):
+    def create_stream (self, packet_len, packet_count):
+        base_pkt = Ether()/IP(src="16.0.0.1",dst="48.0.0.1")/UDP(dport=12,sport=1025)
+        base_pkt_len = len(base_pkt)
+        base_pkt /= 'x' * max(0, packet_len - base_pkt_len)
+        packets = []
+        for i in range(packet_count):
+            packets.append(STLStream(
+                packet = STLPktBuilder(pkt = base_pkt),
+                mode = STLTXCont()
+                ))
+        return packets
+
+    def get_streams (self, direction = 0, packet_len = 64, packet_count = 1, **kwargs):
         # create 1 stream 
-        return [ self.create_stream() ]
+        return self.create_stream(packet_len - 4, packet_count)
 
 
 # dynamic load - used for trex console or simulator
diff --git a/scripts/stl/udp_1pkt_tuple_gen.py b/scripts/stl/udp_1pkt_tuple_gen.py
index be8620c8..4e9ab12d 100644
--- a/scripts/stl/udp_1pkt_tuple_gen.py
+++ b/scripts/stl/udp_1pkt_tuple_gen.py
@@ -2,16 +2,12 @@ from trex_stl_lib.api import *
 
 class STLS1(object):
 
-    def __init__ (self):
-        self.fsize  =64;
-
-    def create_stream (self):
+    def create_stream (self, packet_len):
         # create a base packet and pad it to size
-        size = self.fsize - 4; # no FCS
 
         base_pkt = Ether()/IP(src="16.0.0.1",dst="48.0.0.1")/UDP(dport=12,sport=1025)
 
-        pad = max(0, size - len(base_pkt)) * 'x'
+        pad = max(0, packet_len - len(base_pkt)) * 'x'
                              
         vm = STLScVmRaw( [   STLVmTupleGen ( ip_min="16.0.0.1", ip_max="16.0.0.2", 
                                                    port_min=1025, port_max=65535,
@@ -31,9 +27,9 @@ class STLS1(object):
 
 
 
-    def get_streams (self, direction = 0, **kwargs):
+    def get_streams (self, direction = 0, packet_len = 64, **kwargs):
         # create 1 stream 
-        return [ self.create_stream() ]
+        return [ self.create_stream(packet_len - 4) ]
 
 
 # dynamic load - used for trex console or simulator