我想从GNURadio gr-radar OOT模块执行usrp_echotimer_dual_cw示例。
流程图与内部千兆以太网适配器配合使用，但使用外部PCI千兆以太网适配器失败。
以下是流程图成功执行（eth0）的输出：
Executing: "/home/christophe/new/examples/usrp/usrp_echotimer_dual_cw.py"
linux; GNU C++ version 4.8.4; Boost_105400; UHD_003.010.git-101-g4a1cb1f2
Using Volk machine: avx_64_mmx_orc
-- Opening a USRP2/N-Series device...
-- Current recv frame size: 1472 bytes
-- Current send frame size: 1472 bytes
UHD Warning:
The recv buffer could not be resized sufficiently.
Target sock buff size: 50000000 bytes.
Actual sock buff size: 1000000 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.rmem_max=50000000
UHD Warning:
The recv buffer could not be resized sufficiently.
Target sock buff size: 50000000 bytes.
Actual sock buff size: 1000000 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.rmem_max=50000000
UHD Warning:
The send buffer could not be resized sufficiently.
Target sock buff size: 1048576 bytes.
Actual sock buff size: 1000000 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.wmem_max=1048576
Using USRP Device (TX):
Single USRP:
Device: USRP2 / N-Series Device
Mboard 0: N210r4
RX Channel: 0
RX DSP: 0
RX Dboard: A
RX Subdev: RFX2400 RX
TX Channel: 0
TX DSP: 0
TX Dboard: A
TX Subdev: RFX2400 TX
Setting TX Rate: 14250000
UHD Warning:
The requested interpolation is odd; the user should expect CIC rolloff.
Select an even interpolation to ensure that a halfband filter is enabled.
interpolation = dsp_rate/samp_rate -> 7 = (100.000000 MHz)/(14.250000 MHz)
UHD Warning:
The hardware does not support the requested TX sample rate:
Target sample rate: 14.250000 MSps
Actual sample rate: 14.285714 MSps
Actual TX Rate: 1.42857e+07
UHD Warning:
The requested interpolation is odd; the user should expect CIC rolloff.
Select an even interpolation to ensure that a halfband filter is enabled.
interpolation = dsp_rate/samp_rate -> 7 = (100.000000 MHz)/(14.285714 MHz)
-- Opening a USRP2/N-Series device...
-- Current recv frame size: 1472 bytes
-- Current send frame size: 1472 bytes
UHD Warning:
The recv buffer could not be resized sufficiently.
Target sock buff size: 50000000 bytes.
Actual sock buff size: 1000000 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.rmem_max=50000000
UHD Warning:
The recv buffer could not be resized sufficiently.
Target sock buff size: 50000000 bytes.
Actual sock buff size: 1000000 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.rmem_max=50000000
UHD Warning:
The send buffer could not be resized sufficiently.
Target sock buff size: 1048576 bytes.
Actual sock buff size: 1000000 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.wmem_max=1048576
Using USRP Device (RX):
Single USRP:
Device: USRP2 / N-Series Device
Mboard 0: USRP2 r3
RX Channel: 0
RX DSP: 0
RX Dboard: A
RX Subdev: RFX2400 RX
TX Channel: 0
TX DSP: 0
TX Dboard: A
TX Subdev: RFX2400 TX
Setting RX Rate: 14250000
UHD Warning:
The requested decimation is odd; the user should expect CIC rolloff.
Select an even decimation to ensure that a halfband filter is enabled.
decimation = dsp_rate/samp_rate -> 7 = (100.000000 MHz)/(14.250000 MHz)
UHD Warning:
The hardware does not support the requested RX sample rate:
Target sample rate: 14.250000 MSps
Actual sample rate: 14.285714 MSps
Actual RX Rate: 1.42857e+07
UHD Warning:
The requested decimation is odd; the user should expect CIC rolloff.
Select an even decimation to ensure that a halfband filter is enabled.
decimation = dsp_rate/samp_rate -> 7 = (100.000000 MHz)/(14.285714 MHz)
set_min_output_buffer on block 5 to 4194304
set_min_output_buffer on block 6 to 4194304
set_min_output_buffer on block 7 to 4194304
set_min_output_buffer on block 8 to 4194304
set_min_output_buffer on block 9 to 4194304
set_min_output_buffer on block 17 to 4194304
set_min_output_buffer on block 18 to 4194304
set_min_output_buffer on block 19 to 4194304
set_min_output_buffer on block 20 to 4194304
set_min_output_buffer on block 21 to 4194304
set_min_output_buffer on block 22 to 4194304
// Print results
rx_time: 2:0.0476682
velocity: -5.82422
range: 4.83493
// Print results
rx_time: 2:0.411017
velocity: 0.416016
range: 4.80168
// Print results
rx_time: 2:0.770647
velocity: 1.24805
range: 4.66541
// Print results
rx_time: 3:0.122836
velocity: 1.24805
range: 4.86308
// Print results
rx_time: 3:0.489277
velocity: 1.66406
range: 4.80136
// Print results
rx_time: 3:0.848081
velocity: -15.8086
range: 5.37644
// Print results
rx_time: 4:0.198079
velocity: 4.57617
range: 5.10404
// Print results
rx_time: 4:0.558055
velocity: 4.99219
range: 4.4827
// Print results
rx_time: 4:0.917475
velocity: -0.832031
range: 4.62831
// Print results
rx_time: 5:0.266247
velocity: 6.65625
range: 5.24577
// Print results
rx_time: 5:0.625892
velocity: -6.65625
range: 5.5386
失败的执行（eth1）如下所示：
Executing: "/home/christophe/new/examples/usrp/usrp_echotimer_dual_cw.py"
linux; GNU C++ version 4.8.4; Boost_105400; UHD_003.010.git-101-g4a1cb1f2
Using Volk machine: avx_64_mmx_orc
-- Opening a USRP2/N-Series device...
-- Current recv frame size: 1472 bytes
-- Current send frame size: 1472 bytes
UHD Warning:
The recv buffer could not be resized sufficiently.
Target sock buff size: 50000000 bytes.
Actual sock buff size: 1000000 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.rmem_max=50000000
UHD Warning:
The recv buffer could not be resized sufficiently.
Target sock buff size: 50000000 bytes.
Actual sock buff size: 1000000 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.rmem_max=50000000
UHD Warning:
The send buffer could not be resized sufficiently.
Target sock buff size: 1048576 bytes.
Actual sock buff size: 1000000 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.wmem_max=1048576
Using USRP Device (TX):
Single USRP:
Device: USRP2 / N-Series Device
Mboard 0: N210r4
RX Channel: 0
RX DSP: 0
RX Dboard: A
RX Subdev: RFX2400 RX
TX Channel: 0
TX DSP: 0
TX Dboard: A
TX Subdev: RFX2400 TX
Setting TX Rate: 14250000
UHD Warning:
The requested interpolation is odd; the user should expect CIC rolloff.
Select an even interpolation to ensure that a halfband filter is enabled.
interpolation = dsp_rate/samp_rate -> 7 = (100.000000 MHz)/(14.250000 MHz)
UHD Warning:
The hardware does not support the requested TX sample rate:
Target sample rate: 14.250000 MSps
Actual sample rate: 14.285714 MSps
Actual TX Rate: 1.42857e+07
UHD Warning:
The requested interpolation is odd; the user should expect CIC rolloff.
Select an even interpolation to ensure that a halfband filter is enabled.
interpolation = dsp_rate/samp_rate -> 7 = (100.000000 MHz)/(14.285714 MHz)
-- Opening a USRP2/N-Series device...
-- Current recv frame size: 1472 bytes
-- Current send frame size: 1472 bytes
UHD Warning:
The recv buffer could not be resized sufficiently.
Target sock buff size: 50000000 bytes.
Actual sock buff size: 1000000 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.rmem_max=50000000
UHD Warning:
The recv buffer could not be resized sufficiently.
Target sock buff size: 50000000 bytes.
Actual sock buff size: 1000000 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.rmem_max=50000000
UHD Warning:
The send buffer could not be resized sufficiently.
Target sock buff size: 1048576 bytes.
Actual sock buff size: 1000000 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.wmem_max=1048576
Using USRP Device (RX):
Single USRP:
Device: USRP2 / N-Series Device
Mboard 0: USRP2 r3
RX Channel: 0
RX DSP: 0
RX Dboard: A
RX Subdev: RFX2400 RX
TX Channel: 0
TX DSP: 0
TX Dboard: A
TX Subdev: RFX2400 TX
Setting RX Rate: 14250000
UHD Warning:
The requested decimation is odd; the user should expect CIC rolloff.
Select an even decimation to ensure that a halfband filter is enabled.
decimation = dsp_rate/samp_rate -> 7 = (100.000000 MHz)/(14.250000 MHz)
UHD Warning:
The hardware does not support the requested RX sample rate:
Target sample rate: 14.250000 MSps
Actual sample rate: 14.285714 MSps
Actual RX Rate: 1.42857e+07
UHD Warning:
The requested decimation is odd; the user should expect CIC rolloff.
Select an even decimation to ensure that a halfband filter is enabled.
decimation = dsp_rate/samp_rate -> 7 = (100.000000 MHz)/(14.285714 MHz)
set_min_output_buffer on block 5 to 4194304
set_min_output_buffer on block 6 to 4194304
set_min_output_buffer on block 7 to 4194304
set_min_output_buffer on block 8 to 4194304
set_min_output_buffer on block 9 to 4194304
set_min_output_buffer on block 17 to 4194304
set_min_output_buffer on block 18 to 4194304
set_min_output_buffer on block 19 to 4194304
set_min_output_buffer on block 20 to 4194304
set_min_output_buffer on block 21 to 4194304
set_min_output_buffer on block 22 to 4194304
DReceive timeout before all samples received...
ULLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLterminate called after throwing an instance of 'std::runtime_error'
what(): Receiver error ERROR_CODE_OVERFLOW (Out of sequence error)
这些是我的网卡：
[0] christophe:~ % lspci -nn | grep -i ethernet
00:19.0 Ethernet controller [0200]: Intel Corporation 82579LM Gigabit Network Connection [8086:1502] (rev 04)
02:05.0 Ethernet controller [0200]: Intel Corporation 82541PI Gigabit Ethernet Controller [8086:107c] (rev 05)
我不认为这与计算机的性能有关，因为该流程图适用于功能较弱的笔记本电脑（英特尔酷睿2双核处理器），但在我的i7台式机上出现故障。
答案 0 :(得分：1)
00:19.0 Ethernet controller [0200]: Intel Corporation 82579LM Gigabit Network Connection [8086:1502] (rev 04)
82579LM是单个已知的非USB千兆位以太网适配器，可在不通知操作系统的情况下随机丢弃数据包。
我担心您将不得不使用其他PCIe-Gigabit适配器。
顺便说一下，L表示您的数据包（通常包含USRP执行的某些命令）晚于为该命令指定的时间。
The source code where the L get's printed：
else if (metadata.event_code &
async_metadata_t::EVENT_CODE_TIME_ERROR
) UHD_MSG(fastpath) << "L";
现在，EVENT_CODE_TIME_ERROR means
数据包的时间已经很晚了。
这可能是您的网卡早先丢弃数据包的影响，因此不知何故时间命令失序，或者您的应用程序混淆了。通常情况下，它表明应用程序设计错误，但由于您的网络硬件肯定是错误的（看到控制器多次失败，很抱歉），我会在进一步调查之前先解决这个问题。