I did not see the 'Bounded Low-latency Transmit/Receive' of 616446 in the running results.

haohao11 — Wed, 29 Apr 2026 04:46:05 GMT

vs1A：

root@robot-008:/home/robot/TSN/iotg_tsn_ref_sw# sudo sysctl -w kernel.sched_rt_runtime_us=-1

sudo ./run.sh i225 enp2s0 vs1a setup

kernel.sched_rt_runtime_us = -1

Run.sh selected: vs1a

/var/log folder for logging exists.

Mapping socket priority N to VLAN priority N for enp2s0

Turning off EEE

Setting IRQ affinity based on /home/robot/TSN/iotg_tsn_ref_sw/shell/../common/irq_affinity_4c_4TxRx.map

Echo-ing 0x01 > /proc/irq/132/smp_affinity --> enp2s0:TxRx-0

Echo-ing 0x04 > /proc/irq/134/smp_affinity --> enp2s0:TxRx-2

Echo-ing 0x08 > /proc/irq/135/smp_affinity --> enp2s0:TxRx-3

Running PTP4L & PHC2SYS

Using gPTP_i225-1G.cfg

Run: tc qdisc replace dev enp2s0 parent root handle 100 taprio num_tc 4 map 3 1 0 2 3 3 3 3 3 3 3 3 3 3 3 3 queues 1@0 1@1 1@2 1@3 base-time 1777435629042661374 sched-entry S 0F 1000000 flags 0x2

Warning: sch_taprio: Size table not specified, frame length estimations may be inaccurate.

Run: tc qdisc replace dev enp2s0 parent 100:3 etf clockid CLOCK_TAI delta 700000 offload

Adding flow-type filter for ptp packet to q-0

ethtool -N enp2s0 flow-type ether proto 0x88f7 queue 0

Added rule with ID 64

Wait 30 sec for PTP to sync

root@robot-008:/home/robot/TSN/iotg_tsn_ref_sw# sudo ./run.sh i225 enp2s0 vs1a run

Run.sh selected: vs1a

/var/log folder for logging exists.

'./afpkt-txtstamps.txt' -> '/tmp/afpkt-txtstamps.txt'

'./afxdp-txtstamps.txt' -> '/tmp/afxdp-txtstamps.txt'

PHASE 1: AF_PACKET transmit (510 seconds)

CMD: ./txrx-tsn -i enp2s0 -PtTq 3 -n 500000 -l 64 -y 1000000 -e 700000 -o 20000

pid 6240's current affinity mask: f

pid 6240's new affinity mask: 4

PHASE 2: Skipped. Currently i225 does not support AF_XDP.

Done!

---------------------------------------------------------------------------------------

PHC2SYS offset min -2298

max 2725

delay min 2917

max 5365

waiting: 0

failed: 0

PTP4L rms min 1

max 18

MCLK_SELECTED: 0

INIT_COMPLETE: 0

FAULT_DETECTED: 0

UNCALIBRATED: 0

link down: 0

timed out: 0

temporal: 0

UTCoffset: 0

vs1b：

root@i37100u-Default-string:/home/i3-7100u/TSN/iotg_tsn_ref_sw# sysctl -w kernel.sched_rt_runtime_us=-1

./run.sh i225 enp6s0 vs1b setup

kernel.sched_rt_runtime_us = -1

Run.sh selected: vs1b

/var/log folder for logging exists.

Mapping socket priority N to VLAN priority N for enp6s0

Turning off EEE

Setting IRQ affinity based on /home/i3-7100u/TSN/iotg_tsn_ref_sw/shell/../common/irq_affinity_4c_4TxRx.map

Echo-ing 0x01 > /proc/irq/135/smp_affinity --> enp6s0:TxRx-0

Echo-ing 0x04 > /proc/irq/137/smp_affinity --> enp6s0:TxRx-2

Echo-ing 0x08 > /proc/irq/138/smp_affinity --> enp6s0:TxRx-3

Running PTP4L & PHC2SYS

Using gPTP_i225-1G.cfg

Run: tc qdisc replace dev enp6s0 parent root handle 100 mqprio num_tc 4 map 3 1 0 2 3 3 3 3 3 3 3 3 3 3 3 3 queues 1@0 1@1 1@2 1@3 hw 0

Adding flow-type for ptp packet to q-0

ethtool -N enp6s0 flow-type ether proto 0x88f7 queue 0

Added rule with ID 64

Adding flow-type for txrx-tsn packet vlan priority 0x6000 to q-2

ethtool -N enp6s0 flow-type ether vlan 0x6000 vlan-mask 0x1FFF action 2

Added rule with ID 63

Adding flow-type for txrx-tsn packet priority 0x4000 to q-2

ethtool -N enp6s0 flow-type ether vlan 0x4000 vlan-mask 0x1FFF action 2

Added rule with ID 62

Adding flow-type for iperf3 packet to q-3

ethtool -N enp6s0 flow-type ether proto 0x0800 queue 3

Added rule with ID 61

Wait 30 sec for PTP to sync

root@i37100u-Default-string:/home/i3-7100u/TSN/iotg_tsn_ref_sw# ./run.sh i225 enp6s0 vs1b run

Run.sh selected: vs1b

/var/log folder for logging exists.

'./afpkt-rxtstamps.txt' -> '/tmp/afpkt-rxtstamps.txt'

'./afxdp-rxtstamps.txt' -> '/tmp/afxdp-rxtstamps.txt'

[Kernel_7.0_XDP] De-activate napi busy polling.

PHASE 1: AF_PACKET receive (510 seconds)

CMD: ./txrx-tsn -Pri enp6s0 -q 2 -n 500000

pid 12962's current affinity mask: f

pid 12962's new affinity mask: 8

Info: SIGINT triggered.

PHASE 2: AF_XDP receive 200 seconds)

[Kernel_7.0_XDP_i225] Disable coalescence.

[Kernel_7.0_XDP] Napi polling is not needed.

CMD: ./txrx-tsn -X -z -w -ri enp6s0 -q 2 -n 500000

pid 13174's current affinity mask: f

pid 13174's new affinity mask: 8

Info: SIGINT triggered.

[Kernel_7.0_XDP] De-activate napi busy polling.

PHASE 3: Calculating..

afpkt-rxtstamps.txt has 494127 lines

Results Max Avg Min Expected Received Duplicates Losses

U2U 4532030 742225 560503 500000 494127 0 5873

Too little data afxdp-rxtstamps.txt has only 0 lines

---------------------------------------------------------------------------------------

PHC2SYS offset min -1433

max 1675

delay min 2969

max 5261

waiting: 0

failed: 0

Here are the results of my operation. I am using i225 and have set XDP_MODE="NA" to disable it. Why don't I see the image on page 103 of document 616446?

Re: I did not see the 'Bounded Low-latency Transmit/Receive' of 616446 in the running results.

Diego_INTEL — Fri, 08 May 2026 17:42:36 GMT

Hello @haohao11,

Thank you for contacting Intel Embedded Community.

I think it may be best if you create an IPS case get better help regarding this topic.

https://www.intel.com/content/www/us/en/support/articles/000057045/ethernet-products.html

Best regards,

@Diego_INTEL

topic I did not see the 'Bounded Low-latency Transmit/Receive' of 616446 in the running results. in Embedded Connectivity

I did not see the 'Bounded Low-latency Transmit/Receive' of 616446 in the running results.

Re: I did not see the 'Bounded Low-latency Transmit/Receive' of 616446 in the running results.