Latency stats doesn't show all the packets, though capture has all the packets

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chris...@gmail.com

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Sep 29, 2025, 9:21:10 AMSep 29

to TRex Traffic Generator

Hi All ,

I am using trex stateless, v 3.06.

I am running trex within a kubernetes pod.

My cfg is :

- version: 2
interfaces: ["<pci id>","dummy"]
stack : linux_based
platform:
master_thread_id: 4
latency_thread_id: 5
dual_if:
- socket: 0
threads: [36,37]

I am sending more packets from trex and is testing qos shaping in UL direction.After shaping , I am expecting 31,647 packets but I am seeing only 31221 packets , wherein pcap on trex has all 31,647 packets .This happens when buffer size on DUT is 512 or 4096 .When buffer size on DUT is 64 it works fine .

Expected = 31,647 Received = 31221 Delta = 426
I checked the last 4 bytes added by trex and it seems to match in all packets.

In stats -l i see some drops but the count doesnt match up to 426 .What are those seq_too_high drops?Also , what is this error - Errors | 5.73 K?? Can someone please help here ?

My stream:

# !!! Auto-generated code !!!
from trex.stl.api import *
from scapy.contrib.gtp import *

class STLS1(object):
def get_streams(self, port_id = 0,direction = 0, **kwargs):
streams = []

packet = (Ether(dst='d2:7f:1f:c3:39:ff',src='ae:a8:65:bd:6a:fa',type=33024) /
Dot1Q(vlan=321,type=35153) /
<custom header>/
<custom header>/
GTP /
Raw(load=b'a' * 1446))

vm = STLVM()
stream = STLStream(packet = STLPktBuilder(pkt = packet, vm = vm),stream_id = 17,name = '<>',mode =STLTXCont(pps = 1000),flow_stats = STLFlowLatencyStats(pg_id = 17))
streams.append(stream)

return streams

def register():
return STLS1()

trex start up logs:

The ports are bound/configured.
Starting TRex v3.06 please wait ...
Using configuration file /tmp/trex_cfg.yaml
port limit : not configured
port_bandwidth_gb : 10
port_speed : 0
port_mtu : 0
if_mask : None
is low-end : 0
stack type : linux_based
thread_per_dual_if : 1
if : 6c:05.6, dummy,
enable_zmq_pub : 1
zmq_pub_port : 4500
m_zmq_rpc_port : 4501
memory per 2x10G ports
MBUF_64 : 16380
MBUF_128 : 8190
MBUF_256 : 8190
MBUF_512 : 8190
MBUF_1024 : 8190
MBUF_2048 : 4095
MBUF_4096 : 128
MBUF_9K : 512
TRAFFIC_MBUF_64 : 65520
TRAFFIC_MBUF_128 : 32760
TRAFFIC_MBUF_256 : 8190
TRAFFIC_MBUF_512 : 8190
TRAFFIC_MBUF_1024 : 8190
TRAFFIC_MBUF_2048 : 32760
TRAFFIC_MBUF_4096 : 128
TRAFFIC_MBUF_9K : 512
MBUF_DP_FLOWS : 524288
MBUF_GLOBAL_FLOWS : 5120
master thread : 15
rx thread : 16
dual_if : 0
socket : 0
[ 47 48 ]
CTimerWheelYamlInfo does not exist
flags : 8010f00
write_file : 0
verbose : 7
realtime : 1
flip : 0
cores : 1
single core : 0
flow-flip : 0
no clean close : 0
zmq_publish : 1
vlan mode : 0
client_cfg : 0
mbuf_cache_disable : 0
cfg file :
mac file :
out file :
client cfg file :
duration : 0
factor : 1
mbuf_factor : 1
latency : 0 pkt/sec
zmq_port : 4500
telnet_port : 4501
expected_ports : 2
tw_bucket_usec : 20.000000 usec
tw_buckets : 1024 usec
tw_levels : 3 usec
port : 0 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 1 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 2 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 3 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 4 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 5 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 6 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 7 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 8 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 9 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 10 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 11 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 12 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 13 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 14 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 15 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 16 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 17 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 18 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 19 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 20 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 21 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 22 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 23 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 24 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 25 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 26 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 27 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 28 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 29 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 30 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
port : 31 dst:00:00:00:01:00:00 src:00:00:00:00:00:00
Total Memory :
MBUF_64 : 81900
MBUF_128 : 40950
MBUF_256 : 16380
MBUF_512 : 16380
MBUF_1024 : 16380
MBUF_2048 : 36855
MBUF_4096 : 1024
MBUF_DP_FLOWS : 524288
MBUF_GLOBAL_FLOWS : 5120
get_each_core_dp_flows : 524288
Total memory : 248.40 Mbytes
core_list : 15,16,47
sockets : 0
active sockets : 1
ports_sockets : 1
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
phy | virt
47 1
DPDK args
xx -l 15,16,47 -n 4 --log-level 8 --main-lcore 15 -a <pci id> --legacy-mem
EAL: Detected CPU lcores: 64
EAL: Detected NUMA nodes: 1
EAL: Static memory layout is selected, amount of reserved memory can be adjusted with -m or --socket-mem
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'VA'
EAL: 2048 hugepages of size 2097152 reserved, but no mounted hugetlbfs found for that size
EAL: VFIO support initialized
EAL: Using IOMMU type 1 (Type 1)
EAL: Probe PCI driver: net_iavf (8086:1889) device: 0000:6c:05.6 (socket 0)
TELEMETRY: No legacy callbacks, legacy socket not created
input : [pci id, dummy]
dpdk : [pci id]
pci_scan : [pci id]
map : [ 0, 255]
TRex port mapping
-----------------
TRex vport: 0 dpdk_rte_eth: 0
TRex vport: 1 dpdk_rte_eth: 255
set driver name net_iavf
driver capability : TCP_UDP_OFFLOAD TSO SLRO
set dpdk queues mode to ONE_QUE
DPDK devices 1 : 1
-----
0 : vdev pc id
-----
Number of ports found: 2 (dummy among them: 1)

if_index : 0
driver name : net_iavf
min_rx_bufsize : 1024
max_rx_pktlen : 9728
max_rx_queues : 256
max_tx_queues : 256
max_mac_addrs : 64
rx_offload_capa : 0x8266f
tx_offload_capa : 0x119fbf
rss reta_size : 64
flow_type_rss : 0x3ffc
tx_desc_max : 4096
tx_desc_min : 64
rx_desc_max : 4096
rx_desc_min : 64
zmq publisher at: tcp://*:4500
rx_data_q_num : 1
rx_drop_q_num : 0
rx_dp_q_num : 0
rx_que_total : 1
--
rx_desc_num_data_q : 512
rx_desc_num_drop_q : 4096
rx_desc_num_dp_q : 512
total_desc : 512
--
tx_desc_num : 1024
port 0 desc: Ethernet Adaptive Virtual Function
rx_qid: 0 (512)
iavf_configure_queues(): request RXDID[22] in Queue[0]
wait 1 sec .
port : 0
------------
link : link : Link Up - speed 100000 Mbps - full-duplex
promiscuous : 0
number of ports : 2
max cores for 2 ports : 1
tx queues per port : 3
-------------------------------
RX core uses TX queue number 65535 on all ports
core, c-port, c-queue, s-port, s-queue, lat-queue
------------------------------------------
1 0 0 1 0 0
-------------------------------
base stack ctor
Locking cleanup file /var/lock/trex_cleanup
Cleanup of old namespaces related to Linux-based stack
Cleaning IFs with postfixes T
Cleaning IFs with postfixes L
Cleanup Done
Using netns prefix trex-a-
add port node
add node
Run pending tasks for ticket 0
Running in BG
*******Pretest after resolving ********
Pre test info start ===================
Port 0:
Sources:
ip: 0.0.0.0 mac: 0a:09:02:47:5e:1d
Destinations:
Port 1:
Sources:
Destinations:
Pre test info end ===================
add_node_internal 0a:09:02:47:5e:1d
Namespaced node ctor
Linux node ctor
Pre test statistics for port 0
opackets : 0
obytes : 0
ipackets : 12
ibytes : 768
m_tx_arp : 0
m_rx_arp : 0
Linux handle_pkt: got broadcast or multicast
Linux handle_pkt: got broadcast or multicast
Linux handle_pkt: got broadcast or multicast
Linux handle_pkt: got broadcast or multicast
Linux handle_pkt: got broadcast or multicast
Linux handle_pkt: got broadcast or multicast
Linux handle_pkt: got broadcast or multicast
Linux handle_pkt: got broadcast or multicast
Linux handle_pkt: got broadcast or multicast
Linux handle_pkt: got broadcast or multicast
Linux handle_pkt: got broadcast or multicast
Linux handle_pkt: got broadcast or multicast
Run pending tasks for ticket 0
No pending tasks
Linux handle_pkt: got broadcast or multicast
Packet filtered out by Vlan Filter
sent: 0
Linux handle_pkt: got broadcast or multicast
Packet filtered out by Vlan Filter
sent: 0
Linux handle_pkt: got broadcast or multicast
Packet filtered out by Vlan Filter
sent: 0
Linux handle_pkt: got broadcast or multicast
Packet filtered out by Vlan Filter
sent: 0
Linux handle_pkt: got broadcast or multicast
Packet filtered out by Vlan Filter
sent: 0
Linux handle_pkt: got broadcast or multicast
Packet filtered out by Vlan Filter
sent: 0
Linux handle_pkt: got broadcast or multicast
Packet filtered out by Vlan Filter
sent: 0
Linux handle_pkt: got broadcast or multicast
Packet filtered out by Vlan Filter
sent: 0
Linux handle_pkt: got broadcast or multicast
Packet filtered out by Vlan Filter
sent: 0
Linux handle_pkt: got broadcast or multicast
Packet filtered out by Vlan Filter
sent: 0
Linux handle_pkt: got broadcast or multicast
Packet filtered out by Vlan Filter
sent: 0
Linux handle_pkt: got broadcast or multicast
Packet filtered out by Vlan Filter
sent: 0

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