The total sum of rates exceeds the maximum capacity of the connection

[pchat-imm]

The screen of gnb presented warning

[WARNING] [MULTI_USRP] The total sum of rates (23.040000 MSps on 1 channels) exceeds the maximum capacity of the connection.
This can cause underruns (U).
[DEBUG] [CONVERT] get_converter: For converter ID: conversion ID
  Input format:  fc32
  Num inputs:    1
  Output format: sc12_item32_le
  Num outputs:   1
 Using prio: 0
[WARNING] [MULTI_USRP] The total sum of rates (23.040000 MSps on 1 channels) exceeds the maximum capacity of the connection.
This can cause overflows (O).
[DEBUG] [CONVERT] get_converter: For converter ID: conversion ID
  Input format:  sc12_item32_le
  Num inputs:    1
  Output format: fc32
  Num outputs:   1
 Using prio: 0
Cell pci=1, bw=20 MHz, dl_arfcn=627340 (n78), dl_freq=3410.1 MHz, dl_ssb_arfcn=626976, ul_freq=3410.1 MHz

then the trace shows

==== gNodeB started ===
Type <t> to view trace
Late: 4345; Underflow: 1765; Overflow: 1;
Error: exceeded maximum number of timed out transmissions.
Error: exceeded maximum number of timed out transmissions.
Late: 4440; Underflow: 1778; Overflow: 0;
Error: exceeded maximum number of timed out transmissions.
Late: 4425; Underflow: 1768; Overflow: 0;
Error: exceeded maximum number of timed out transmissions.
Late: 4385; Underflow: 1754; Overflow: 0;

What can I do to mitigate this issue?
gnb_log.zip
gnb_terminal.zip

System

• open5GS as core network
• srsRAN_Project with USRP B210 as RAN
• run on Thinkpad L14

[herlesupreeth]

Notice that your B210 is running on USB2 and not USB3. I would suggest plugging your B210 to a USB3 port. If you have already done so, then I would suggest plugging it out of USB port and plug it back in.

[INFO] [B200] Operating over USB 2.

[pchat-imm]

Thank you it is problem with the USB. Thank you