[Touch-packages] [Bug 1853638] Re: BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet device seems to be dropping data

2020-02-14 Thread Edwin Peer
Regarding your question about LLDP and IPv6...

The default Ubuntu 18.04.3 configuration has an IPv6 enabled kernel, but
the interface only has the default link local address configured. I've
seen it do router solicitation on link state changes and periodically
thereafter. I think I recall seeing somewhere above that you were going
to try without IPv6. Have you seen different behavior with IPv6
disabled?

I don't expect to see LLDP because I have the two NICs wired directly to
each other, back to back. I'm not running any LLDP daemon on the host.

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Title:
  BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet device seems to be
  dropping data

Status in linux package in Ubuntu:
  Confirmed
Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  The issue appears to be with the BCM57416 NetXtreme-E Dual-Media 10G
  RDMA Ethernet device seems to be dropping data

  Basically, we are dropping data, as you can see from the benchmark
  tool as follows:

  tcdforge@x310a:/usr/local/lib/lib/uhd/examples$ ./benchmark_rate --rx_rate 
10e6 --tx_rate 10e6 --duration 300
  [INFO] [UHD] linux; GNU C++ version 5.4.0 20160609; Boost_105800; 
UHD_3.14.1.1-0-g98c7c986
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam

  [00:00:00.07] Creating the usrp device with: ...
  [INFO] [X300] X300 initialization sequence...
  [INFO] [X300] Maximum frame size: 1472 bytes.
  [INFO] [X300] Radio 1x clock: 200 MHz
  [INFO] [GPS] Found an internal GPSDO: LC_XO, Firmware Rev 0.929a
  [INFO] [0/DmaFIFO_0] Initializing block control (NOC ID: 0xF1F0D000)
  [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1308 MB/s)
  [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1316 MB/s)
  [INFO] [0/Radio_0] Initializing block control (NOC ID: 0x12AD1001)
  [INFO] [0/Radio_1] Initializing block control (NOC ID: 0x12AD1001)
  [INFO] [0/DDC_0] Initializing block control (NOC ID: 0xDDC0)
  [INFO] [0/DDC_1] Initializing block control (NOC ID: 0xDDC0)
  [INFO] [0/DUC_0] Initializing block control (NOC ID: 0xD0C0)
  [INFO] [0/DUC_1] Initializing block control (NOC ID: 0xD0C0)
  Using Device: Single USRP:
Device: X-Series Device
Mboard 0: X310
RX Channel: 0
  RX DSP: 0
  RX Dboard: A
  RX Subdev: SBX-120 RX
RX Channel: 1
  RX DSP: 0
  RX Dboard: B
  RX Subdev: SBX-120 RX
TX Channel: 0
  TX DSP: 0
  TX Dboard: A
  TX Subdev: SBX-120 TX
TX Channel: 1
  TX DSP: 0
  TX Dboard: B
  TX Subdev: SBX-120 TX

  [00:00:04.305374] Setting device timestamp to 0...
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam
  [00:00:04.310990] Testing receive rate 10.00 Msps on 1 channels
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam
  [00:00:04.318356] Testing transmit rate 10.00 Msps on 1 channels
  [00:00:06.693119] Detected Rx sequence error.
  D[00:00:09.402843] Detected Rx sequence error.
  DD[00:00:40.927978] Detected Rx sequence error.
  D[00:01:44.982243] Detected Rx sequence error.
  D[00:02:11.400692] Detected Rx sequence error.
  D[00:02:14.805292] Detected Rx sequence error.
  D[00:02:41.875596] Detected Rx sequence error.
  D[00:03:06.927743] Detected Rx sequence error.
  D[00:03:47.967891] Detected Rx sequence error.
  D[00:03:58.233659] Detected Rx sequence error.
  D[00:03:58.876588] Detected Rx sequence error.
  D[00:04:03.139770] Detected Rx sequence error.
  D[00:04:45.287465] Detected Rx sequence error.
  D[00:04:56.425845] Detected Rx sequence error.
  D[00:04:57.929209] Detected Rx sequence error.
  [00:05:04.529548] Benchmark complete.
  Benchmark rate summary:
Num received samples: 2995435936
Num dropped samples:  4622800
Num overruns detected:0
Num transmitted samples:  3008276544
Num sequence errors (Tx): 0
Num sequence errors (Rx): 15
Num underruns detected:   0
Num late commands:0
Num timeouts (Tx):0
Num timeouts (Rx):0
  Done!

  tcdforge@x310a:/usr/local/lib/lib/uhd/examples$

  
  In this particular case description, the nodes are USRP x310s. However, we 
have the same issue with N210 nodes dropping samples connected to the BCM57416 
NetXtreme-E Dual-Media 10G RDMA Ethernet device.

  There is no 

[Touch-packages] [Bug 1853638] Re: BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet device seems to be dropping data

2020-02-14 Thread Edwin Peer
The tpa_aborts shouldn't be a concern. They merely indicate that a TCP
flow could not be aggregated. That could have a performance impact, of
course, but that should manifest as counted drops somewhere if this were
the case.

Importantly, the tpa_aborts only apply to TCP traffic, but you see the
problem for ICMP and UDP too.

Note, the tpa_aborts also appear to be evident on the primary as active
interface while things are working as expected. A difference in
magnitude tpa_aborts from one test run to another may be a clue about
something else that's happening though, but I'm not sure that we are
comparing apples to apples with respect the ethtool -S dumps posted thus
far (when were they captured relative to the test runs, which interface
was active at the time, etc?).

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https://bugs.launchpad.net/bugs/1853638

Title:
  BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet device seems to be
  dropping data

Status in linux package in Ubuntu:
  Confirmed
Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  The issue appears to be with the BCM57416 NetXtreme-E Dual-Media 10G
  RDMA Ethernet device seems to be dropping data

  Basically, we are dropping data, as you can see from the benchmark
  tool as follows:

  tcdforge@x310a:/usr/local/lib/lib/uhd/examples$ ./benchmark_rate --rx_rate 
10e6 --tx_rate 10e6 --duration 300
  [INFO] [UHD] linux; GNU C++ version 5.4.0 20160609; Boost_105800; 
UHD_3.14.1.1-0-g98c7c986
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam

  [00:00:00.07] Creating the usrp device with: ...
  [INFO] [X300] X300 initialization sequence...
  [INFO] [X300] Maximum frame size: 1472 bytes.
  [INFO] [X300] Radio 1x clock: 200 MHz
  [INFO] [GPS] Found an internal GPSDO: LC_XO, Firmware Rev 0.929a
  [INFO] [0/DmaFIFO_0] Initializing block control (NOC ID: 0xF1F0D000)
  [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1308 MB/s)
  [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1316 MB/s)
  [INFO] [0/Radio_0] Initializing block control (NOC ID: 0x12AD1001)
  [INFO] [0/Radio_1] Initializing block control (NOC ID: 0x12AD1001)
  [INFO] [0/DDC_0] Initializing block control (NOC ID: 0xDDC0)
  [INFO] [0/DDC_1] Initializing block control (NOC ID: 0xDDC0)
  [INFO] [0/DUC_0] Initializing block control (NOC ID: 0xD0C0)
  [INFO] [0/DUC_1] Initializing block control (NOC ID: 0xD0C0)
  Using Device: Single USRP:
Device: X-Series Device
Mboard 0: X310
RX Channel: 0
  RX DSP: 0
  RX Dboard: A
  RX Subdev: SBX-120 RX
RX Channel: 1
  RX DSP: 0
  RX Dboard: B
  RX Subdev: SBX-120 RX
TX Channel: 0
  TX DSP: 0
  TX Dboard: A
  TX Subdev: SBX-120 TX
TX Channel: 1
  TX DSP: 0
  TX Dboard: B
  TX Subdev: SBX-120 TX

  [00:00:04.305374] Setting device timestamp to 0...
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam
  [00:00:04.310990] Testing receive rate 10.00 Msps on 1 channels
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam
  [00:00:04.318356] Testing transmit rate 10.00 Msps on 1 channels
  [00:00:06.693119] Detected Rx sequence error.
  D[00:00:09.402843] Detected Rx sequence error.
  DD[00:00:40.927978] Detected Rx sequence error.
  D[00:01:44.982243] Detected Rx sequence error.
  D[00:02:11.400692] Detected Rx sequence error.
  D[00:02:14.805292] Detected Rx sequence error.
  D[00:02:41.875596] Detected Rx sequence error.
  D[00:03:06.927743] Detected Rx sequence error.
  D[00:03:47.967891] Detected Rx sequence error.
  D[00:03:58.233659] Detected Rx sequence error.
  D[00:03:58.876588] Detected Rx sequence error.
  D[00:04:03.139770] Detected Rx sequence error.
  D[00:04:45.287465] Detected Rx sequence error.
  D[00:04:56.425845] Detected Rx sequence error.
  D[00:04:57.929209] Detected Rx sequence error.
  [00:05:04.529548] Benchmark complete.
  Benchmark rate summary:
Num received samples: 2995435936
Num dropped samples:  4622800
Num overruns detected:0
Num transmitted samples:  3008276544
Num sequence errors (Tx): 0
Num sequence errors (Rx): 15
Num underruns detected:   0
Num late commands:0
Num timeouts (Tx):0
Num timeouts (Rx):0
  Done!

  tcdforge@x310a:/usr/local/lib/lib/uhd/examples$

[Touch-packages] [Bug 1853638] Re: BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet device seems to be dropping data

2020-02-13 Thread Edwin Peer
I have tried, unsuccessfully, to reproduce this issue internally.
Details of my setup below.

1) I have a pair of Dell R210 servers racked (u072 and u073 below), each
with a BCM57416 installed:

root@u072:~# lspci | grep BCM57416
01:00.0 Ethernet controller: Broadcom Inc. and subsidiaries BCM57416 
NetXtreme-E Dual-Media 10G RDMA Ethernet Controller (rev 01)
01:00.1 Ethernet controller: Broadcom Inc. and subsidiaries BCM57416 
NetXtreme-E Dual-Media 10G RDMA Ethernet Controller (rev 01)

2) I've matched the firmware version to one that Nivedita reported in a
bad system:

root@u072:~# ethtool -i enp1s0f0np0
driver: bnxt_en
version: 1.10.0
firmware-version: 214.0.253.1/pkg 21.40.25.31
expansion-rom-version: 
bus-info: :01:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: no
supports-priv-flags: no

3) Matched Ubuntu release and kernel version:

root@u072:~# lsb_release -dr
Description:Ubuntu 18.04.3 LTS
Release:18.04

root@u072:~# uname -a
Linux u072 5.0.0-37-generic #40~18.04.1-Ubuntu SMP Thu Nov 14 12:06:39 UTC 2019 
x86_64 x86_64 x86_64 GNU/Linux

4) Configured the interface into an active-backup bond:

root@u072:~# cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)

Bonding Mode: fault-tolerance (active-backup)
Primary Slave: None
Currently Active Slave: enp1s0f1np1
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0

Slave Interface: enp1s0f1np1
MII Status: up
Speed: 1 Mbps
Duplex: full
Link Failure Count: 1
Permanent HW addr: 00:0a:f7:a7:10:61
Slave queue ID: 0

Slave Interface: enp1s0f0np0
MII Status: up
Speed: 1 Mbps
Duplex: full
Link Failure Count: 1
Permanent HW addr: 00:0a:f7:a7:10:60
Slave queue ID: 0

5) Run the provided mtr and netperf test cases with the 1st port
selected as active:

root@u072:~# ip l set enp1s0f1np1 down
root@u072:~# ip l set enp1s0f1np1 up
root@u072:~# cat /proc/net/bonding/bond0 | grep Active
Currently Active Slave: enp1s0f0np0

a) initiated on u072:

root@u072:~# mtr --no-dns --report --report-cycles 60 192.168.1.2
Start: 2020-02-13T20:48:01+
HOST: u072Loss%   Snt   Last   Avg  Best  Wrst StDev
  1.|-- 192.168.1.20.0%600.2   0.2   0.2   0.2   0.0

root@u072:~# netperf -t TCP_RR -H 192.168.1.2 -- -r 1,1
MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 
192.168.1.2 () port 0 AF_INET : demo : first burst 0
Local /Remote
Socket Size   Request  Resp.   Elapsed  Trans.
Send   Recv   Size SizeTime Rate 
bytes  Bytes  bytesbytes   secs.per sec   

16384  131072 11   10.0029040.91   
16384  87380

root@u072:~# netperf -t TCP_RR -H 192.168.1.2 -- -r 64,64
MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 
192.168.1.2 () port 0 AF_INET : demo : first burst 0
Local /Remote
Socket Size   Request  Resp.   Elapsed  Trans.
Send   Recv   Size SizeTime Rate 
bytes  Bytes  bytesbytes   secs.per sec   

16384  131072 64   64  10.0028633.36   
16384  87380 

root@u072:~# netperf -t TCP_RR -H 192.168.1.2 -- -r 128,8192
MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 
192.168.1.2 () port 0 AF_INET : demo : first burst 0
Local /Remote
Socket Size   Request  Resp.   Elapsed  Trans.
Send   Recv   Size SizeTime Rate 
bytes  Bytes  bytesbytes   secs.per sec   

16384  131072 128  819210.0017469.30   
16384  87380

b) initiated on u073:

root@u073:~# mtr --no-dns --report --report-cycles 60 192.168.1.1
Start: 2020-02-13T20:53:37+
HOST: u073Loss%   Snt   Last   Avg  Best  Wrst StDev
  1.|-- 192.168.1.10.0%600.1   0.1   0.1   0.2   0.0

root@u073:~# netperf -t TCP_RR -H 192.168.1.1 -- -r 1,1
MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 
192.168.1.1 () port 0 AF_INET : demo : first burst 0
Local /Remote
Socket Size   Request  Resp.   Elapsed  Trans.
Send   Recv   Size SizeTime Rate 
bytes  Bytes  bytesbytes   secs.per sec   

16384  87380  11   10.0028514.93   
16384  131072

root@u073:~# netperf -t TCP_RR -H 192.168.1.1 -- -r 64,64
MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 
192.168.1.1 () port 0 AF_INET : demo : first burst 0
Local /Remote
Socket Size   Request  Resp.   Elapsed  Trans.
Send   Recv   Size SizeTime Rate 
bytes  Bytes  bytesbytes   secs.per sec   

16384  87380  64   64  10.0027405.88   
16384  131072

root@u073:~# netperf -t TCP_RR -H 192.168.1.1 -- -r 128,8192
MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 
192.168.1.1 () port 0 AF_INET : demo : first burst 0
Local /Remote
Socket Size   Request  Resp.   Elapsed  Trans.
Send   Recv   Size SizeTime Rate 
b

[Touch-packages] [Bug 1853638] Re: BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet device seems to be dropping data

2020-02-11 Thread Edwin Peer
Hi Nivedita,

I have been away on PTO the last week and am picking this up again now.
Please could you post the full bonding configuration?

Regards,
Edwin Peer

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1853638

Title:
  BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet device seems to be
  dropping data

Status in linux package in Ubuntu:
  Confirmed
Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  The issue appears to be with the BCM57416 NetXtreme-E Dual-Media 10G
  RDMA Ethernet device seems to be dropping data

  Basically, we are dropping data, as you can see from the benchmark
  tool as follows:

  tcdforge@x310a:/usr/local/lib/lib/uhd/examples$ ./benchmark_rate --rx_rate 
10e6 --tx_rate 10e6 --duration 300
  [INFO] [UHD] linux; GNU C++ version 5.4.0 20160609; Boost_105800; 
UHD_3.14.1.1-0-g98c7c986
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam

  [00:00:00.07] Creating the usrp device with: ...
  [INFO] [X300] X300 initialization sequence...
  [INFO] [X300] Maximum frame size: 1472 bytes.
  [INFO] [X300] Radio 1x clock: 200 MHz
  [INFO] [GPS] Found an internal GPSDO: LC_XO, Firmware Rev 0.929a
  [INFO] [0/DmaFIFO_0] Initializing block control (NOC ID: 0xF1F0D000)
  [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1308 MB/s)
  [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1316 MB/s)
  [INFO] [0/Radio_0] Initializing block control (NOC ID: 0x12AD1001)
  [INFO] [0/Radio_1] Initializing block control (NOC ID: 0x12AD1001)
  [INFO] [0/DDC_0] Initializing block control (NOC ID: 0xDDC0)
  [INFO] [0/DDC_1] Initializing block control (NOC ID: 0xDDC0)
  [INFO] [0/DUC_0] Initializing block control (NOC ID: 0xD0C0)
  [INFO] [0/DUC_1] Initializing block control (NOC ID: 0xD0C0)
  Using Device: Single USRP:
Device: X-Series Device
Mboard 0: X310
RX Channel: 0
  RX DSP: 0
  RX Dboard: A
  RX Subdev: SBX-120 RX
RX Channel: 1
  RX DSP: 0
  RX Dboard: B
  RX Subdev: SBX-120 RX
TX Channel: 0
  TX DSP: 0
  TX Dboard: A
  TX Subdev: SBX-120 TX
TX Channel: 1
  TX DSP: 0
  TX Dboard: B
  TX Subdev: SBX-120 TX

  [00:00:04.305374] Setting device timestamp to 0...
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam
  [00:00:04.310990] Testing receive rate 10.00 Msps on 1 channels
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam
  [00:00:04.318356] Testing transmit rate 10.00 Msps on 1 channels
  [00:00:06.693119] Detected Rx sequence error.
  D[00:00:09.402843] Detected Rx sequence error.
  DD[00:00:40.927978] Detected Rx sequence error.
  D[00:01:44.982243] Detected Rx sequence error.
  D[00:02:11.400692] Detected Rx sequence error.
  D[00:02:14.805292] Detected Rx sequence error.
  D[00:02:41.875596] Detected Rx sequence error.
  D[00:03:06.927743] Detected Rx sequence error.
  D[00:03:47.967891] Detected Rx sequence error.
  D[00:03:58.233659] Detected Rx sequence error.
  D[00:03:58.876588] Detected Rx sequence error.
  D[00:04:03.139770] Detected Rx sequence error.
  D[00:04:45.287465] Detected Rx sequence error.
  D[00:04:56.425845] Detected Rx sequence error.
  D[00:04:57.929209] Detected Rx sequence error.
  [00:05:04.529548] Benchmark complete.
  Benchmark rate summary:
Num received samples: 2995435936
Num dropped samples:  4622800
Num overruns detected:0
Num transmitted samples:  3008276544
Num sequence errors (Tx): 0
Num sequence errors (Rx): 15
Num underruns detected:   0
Num late commands:0
Num timeouts (Tx):0
Num timeouts (Rx):0
  Done!

  tcdforge@x310a:/usr/local/lib/lib/uhd/examples$

  
  In this particular case description, the nodes are USRP x310s. However, we 
have the same issue with N210 nodes dropping samples connected to the BCM57416 
NetXtreme-E Dual-Media 10G RDMA Ethernet device.

  There is no problem with the USRPs themselves, as we have tested them
  with normal 1G network cards and have no dropped samples.

  Personally I think its something to do with the 10G network card,
  possibly on a ubuntu driver???

  Note, Dell have said there is no hardware problem with the 10G
  interfaces

  I have followed the troubleshooting information on this link to try determine 
the

[Touch-packages] [Bug 1853638] Re: BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet device seems to be dropping data

2020-01-31 Thread Edwin Peer
I don't think bnxt_en exposes the disable_tpa parameter. Be that as it
may, I think the tpa_aborts may be a red herring. TPA aggregates TCP
flows and you are seeing the issue with ICMP.

In which direction(s) of traffic flow do you see the losses?

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/1853638

Title:
  BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet device seems to be
  dropping data

Status in linux package in Ubuntu:
  Confirmed
Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  The issue appears to be with the BCM57416 NetXtreme-E Dual-Media 10G
  RDMA Ethernet device seems to be dropping data

  Basically, we are dropping data, as you can see from the benchmark
  tool as follows:

  tcdforge@x310a:/usr/local/lib/lib/uhd/examples$ ./benchmark_rate --rx_rate 
10e6 --tx_rate 10e6 --duration 300
  [INFO] [UHD] linux; GNU C++ version 5.4.0 20160609; Boost_105800; 
UHD_3.14.1.1-0-g98c7c986
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam

  [00:00:00.07] Creating the usrp device with: ...
  [INFO] [X300] X300 initialization sequence...
  [INFO] [X300] Maximum frame size: 1472 bytes.
  [INFO] [X300] Radio 1x clock: 200 MHz
  [INFO] [GPS] Found an internal GPSDO: LC_XO, Firmware Rev 0.929a
  [INFO] [0/DmaFIFO_0] Initializing block control (NOC ID: 0xF1F0D000)
  [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1308 MB/s)
  [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1316 MB/s)
  [INFO] [0/Radio_0] Initializing block control (NOC ID: 0x12AD1001)
  [INFO] [0/Radio_1] Initializing block control (NOC ID: 0x12AD1001)
  [INFO] [0/DDC_0] Initializing block control (NOC ID: 0xDDC0)
  [INFO] [0/DDC_1] Initializing block control (NOC ID: 0xDDC0)
  [INFO] [0/DUC_0] Initializing block control (NOC ID: 0xD0C0)
  [INFO] [0/DUC_1] Initializing block control (NOC ID: 0xD0C0)
  Using Device: Single USRP:
Device: X-Series Device
Mboard 0: X310
RX Channel: 0
  RX DSP: 0
  RX Dboard: A
  RX Subdev: SBX-120 RX
RX Channel: 1
  RX DSP: 0
  RX Dboard: B
  RX Subdev: SBX-120 RX
TX Channel: 0
  TX DSP: 0
  TX Dboard: A
  TX Subdev: SBX-120 TX
TX Channel: 1
  TX DSP: 0
  TX Dboard: B
  TX Subdev: SBX-120 TX

  [00:00:04.305374] Setting device timestamp to 0...
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam
  [00:00:04.310990] Testing receive rate 10.00 Msps on 1 channels
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam
  [00:00:04.318356] Testing transmit rate 10.00 Msps on 1 channels
  [00:00:06.693119] Detected Rx sequence error.
  D[00:00:09.402843] Detected Rx sequence error.
  DD[00:00:40.927978] Detected Rx sequence error.
  D[00:01:44.982243] Detected Rx sequence error.
  D[00:02:11.400692] Detected Rx sequence error.
  D[00:02:14.805292] Detected Rx sequence error.
  D[00:02:41.875596] Detected Rx sequence error.
  D[00:03:06.927743] Detected Rx sequence error.
  D[00:03:47.967891] Detected Rx sequence error.
  D[00:03:58.233659] Detected Rx sequence error.
  D[00:03:58.876588] Detected Rx sequence error.
  D[00:04:03.139770] Detected Rx sequence error.
  D[00:04:45.287465] Detected Rx sequence error.
  D[00:04:56.425845] Detected Rx sequence error.
  D[00:04:57.929209] Detected Rx sequence error.
  [00:05:04.529548] Benchmark complete.
  Benchmark rate summary:
Num received samples: 2995435936
Num dropped samples:  4622800
Num overruns detected:0
Num transmitted samples:  3008276544
Num sequence errors (Tx): 0
Num sequence errors (Rx): 15
Num underruns detected:   0
Num late commands:0
Num timeouts (Tx):0
Num timeouts (Rx):0
  Done!

  tcdforge@x310a:/usr/local/lib/lib/uhd/examples$

  
  In this particular case description, the nodes are USRP x310s. However, we 
have the same issue with N210 nodes dropping samples connected to the BCM57416 
NetXtreme-E Dual-Media 10G RDMA Ethernet device.

  There is no problem with the USRPs themselves, as we have tested them
  with normal 1G network cards and have no dropped samples.

  Personally I think its something to do with the 10G network card,
  possibly on a ubuntu driver???

  Note, Dell have said there is no hardware problem with the 10G
  interfaces

  I h

[Touch-packages] [Bug 1853638] Re: BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet device seems to be dropping data

2020-01-30 Thread Edwin Peer
> 3. mtr ping test
> ---
> GoodSystem..0.0% Loss; 0.2 Avg; 0.1 Best, 0.9 Worst, 0.1 StdDev
> BadSystem2...11.7% Loss; 0.1 Avg; 0.1 Best, 0.2 Worst, 0.0 StdDev

The mtr packet loss is an interesting result. What mtr options did you
use? Is this a UDP or ICMP test?

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1853638

Title:
  BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet device seems to be
  dropping data

Status in linux package in Ubuntu:
  Confirmed
Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  The issue appears to be with the BCM57416 NetXtreme-E Dual-Media 10G
  RDMA Ethernet device seems to be dropping data

  Basically, we are dropping data, as you can see from the benchmark
  tool as follows:

  tcdforge@x310a:/usr/local/lib/lib/uhd/examples$ ./benchmark_rate --rx_rate 
10e6 --tx_rate 10e6 --duration 300
  [INFO] [UHD] linux; GNU C++ version 5.4.0 20160609; Boost_105800; 
UHD_3.14.1.1-0-g98c7c986
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam

  [00:00:00.07] Creating the usrp device with: ...
  [INFO] [X300] X300 initialization sequence...
  [INFO] [X300] Maximum frame size: 1472 bytes.
  [INFO] [X300] Radio 1x clock: 200 MHz
  [INFO] [GPS] Found an internal GPSDO: LC_XO, Firmware Rev 0.929a
  [INFO] [0/DmaFIFO_0] Initializing block control (NOC ID: 0xF1F0D000)
  [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1308 MB/s)
  [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1316 MB/s)
  [INFO] [0/Radio_0] Initializing block control (NOC ID: 0x12AD1001)
  [INFO] [0/Radio_1] Initializing block control (NOC ID: 0x12AD1001)
  [INFO] [0/DDC_0] Initializing block control (NOC ID: 0xDDC0)
  [INFO] [0/DDC_1] Initializing block control (NOC ID: 0xDDC0)
  [INFO] [0/DUC_0] Initializing block control (NOC ID: 0xD0C0)
  [INFO] [0/DUC_1] Initializing block control (NOC ID: 0xD0C0)
  Using Device: Single USRP:
Device: X-Series Device
Mboard 0: X310
RX Channel: 0
  RX DSP: 0
  RX Dboard: A
  RX Subdev: SBX-120 RX
RX Channel: 1
  RX DSP: 0
  RX Dboard: B
  RX Subdev: SBX-120 RX
TX Channel: 0
  TX DSP: 0
  TX Dboard: A
  TX Subdev: SBX-120 TX
TX Channel: 1
  TX DSP: 0
  TX Dboard: B
  TX Subdev: SBX-120 TX

  [00:00:04.305374] Setting device timestamp to 0...
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam
  [00:00:04.310990] Testing receive rate 10.00 Msps on 1 channels
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam
  [00:00:04.318356] Testing transmit rate 10.00 Msps on 1 channels
  [00:00:06.693119] Detected Rx sequence error.
  D[00:00:09.402843] Detected Rx sequence error.
  DD[00:00:40.927978] Detected Rx sequence error.
  D[00:01:44.982243] Detected Rx sequence error.
  D[00:02:11.400692] Detected Rx sequence error.
  D[00:02:14.805292] Detected Rx sequence error.
  D[00:02:41.875596] Detected Rx sequence error.
  D[00:03:06.927743] Detected Rx sequence error.
  D[00:03:47.967891] Detected Rx sequence error.
  D[00:03:58.233659] Detected Rx sequence error.
  D[00:03:58.876588] Detected Rx sequence error.
  D[00:04:03.139770] Detected Rx sequence error.
  D[00:04:45.287465] Detected Rx sequence error.
  D[00:04:56.425845] Detected Rx sequence error.
  D[00:04:57.929209] Detected Rx sequence error.
  [00:05:04.529548] Benchmark complete.
  Benchmark rate summary:
Num received samples: 2995435936
Num dropped samples:  4622800
Num overruns detected:0
Num transmitted samples:  3008276544
Num sequence errors (Tx): 0
Num sequence errors (Rx): 15
Num underruns detected:   0
Num late commands:0
Num timeouts (Tx):0
Num timeouts (Rx):0
  Done!

  tcdforge@x310a:/usr/local/lib/lib/uhd/examples$

  
  In this particular case description, the nodes are USRP x310s. However, we 
have the same issue with N210 nodes dropping samples connected to the BCM57416 
NetXtreme-E Dual-Media 10G RDMA Ethernet device.

  There is no problem with the USRPs themselves, as we have tested them
  with normal 1G network cards and have no dropped samples.

  Personally I think its something to do with the 10G network card,
  possibly on a ubuntu driver???

  Note, Dell have said there is 

[Touch-packages] [Bug 1853638] Re: BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet device seems to be dropping data

2020-01-30 Thread Edwin Peer
With respect to one of these situations, this is the following system:

> Dell PowerEdge R440/0XP8V5, BIOS 2.2.11 06/14/2019
> 
> Note that a similar system does not have any issues:
> 
> Dell Inc. PowerEdge R430/0CN7X8, BIOS 2.3.4 11/08/2016
> 
> So the NIC in the "bad" environment is:
> 
> BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet Controller (rev 01)
> Product Name: Broadcom Adv. Dual 10G SFP+ Ethernet
> 
> The NIC in the "good" environment is:
> 
> Broadcom Inc. and subsidiaries NetXtreme II BCM57810
> 10 Gigabit Ethernet [14e4:1006]
> Product Name: QLogic 57810 10 Gigabit Ethernet

There are more than one variable at play here. Does the problem follow
the NIC if you swap the NICs between systems? Are OS / kernel and driver
versions the same on both systems?

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/1853638

Title:
  BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet device seems to be
  dropping data

Status in linux package in Ubuntu:
  Confirmed
Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  The issue appears to be with the BCM57416 NetXtreme-E Dual-Media 10G
  RDMA Ethernet device seems to be dropping data

  Basically, we are dropping data, as you can see from the benchmark
  tool as follows:

  tcdforge@x310a:/usr/local/lib/lib/uhd/examples$ ./benchmark_rate --rx_rate 
10e6 --tx_rate 10e6 --duration 300
  [INFO] [UHD] linux; GNU C++ version 5.4.0 20160609; Boost_105800; 
UHD_3.14.1.1-0-g98c7c986
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam

  [00:00:00.07] Creating the usrp device with: ...
  [INFO] [X300] X300 initialization sequence...
  [INFO] [X300] Maximum frame size: 1472 bytes.
  [INFO] [X300] Radio 1x clock: 200 MHz
  [INFO] [GPS] Found an internal GPSDO: LC_XO, Firmware Rev 0.929a
  [INFO] [0/DmaFIFO_0] Initializing block control (NOC ID: 0xF1F0D000)
  [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1308 MB/s)
  [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1316 MB/s)
  [INFO] [0/Radio_0] Initializing block control (NOC ID: 0x12AD1001)
  [INFO] [0/Radio_1] Initializing block control (NOC ID: 0x12AD1001)
  [INFO] [0/DDC_0] Initializing block control (NOC ID: 0xDDC0)
  [INFO] [0/DDC_1] Initializing block control (NOC ID: 0xDDC0)
  [INFO] [0/DUC_0] Initializing block control (NOC ID: 0xD0C0)
  [INFO] [0/DUC_1] Initializing block control (NOC ID: 0xD0C0)
  Using Device: Single USRP:
Device: X-Series Device
Mboard 0: X310
RX Channel: 0
  RX DSP: 0
  RX Dboard: A
  RX Subdev: SBX-120 RX
RX Channel: 1
  RX DSP: 0
  RX Dboard: B
  RX Subdev: SBX-120 RX
TX Channel: 0
  TX DSP: 0
  TX Dboard: A
  TX Subdev: SBX-120 TX
TX Channel: 1
  TX DSP: 0
  TX Dboard: B
  TX Subdev: SBX-120 TX

  [00:00:04.305374] Setting device timestamp to 0...
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam
  [00:00:04.310990] Testing receive rate 10.00 Msps on 1 channels
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam
  [00:00:04.318356] Testing transmit rate 10.00 Msps on 1 channels
  [00:00:06.693119] Detected Rx sequence error.
  D[00:00:09.402843] Detected Rx sequence error.
  DD[00:00:40.927978] Detected Rx sequence error.
  D[00:01:44.982243] Detected Rx sequence error.
  D[00:02:11.400692] Detected Rx sequence error.
  D[00:02:14.805292] Detected Rx sequence error.
  D[00:02:41.875596] Detected Rx sequence error.
  D[00:03:06.927743] Detected Rx sequence error.
  D[00:03:47.967891] Detected Rx sequence error.
  D[00:03:58.233659] Detected Rx sequence error.
  D[00:03:58.876588] Detected Rx sequence error.
  D[00:04:03.139770] Detected Rx sequence error.
  D[00:04:45.287465] Detected Rx sequence error.
  D[00:04:56.425845] Detected Rx sequence error.
  D[00:04:57.929209] Detected Rx sequence error.
  [00:05:04.529548] Benchmark complete.
  Benchmark rate summary:
Num received samples: 2995435936
Num dropped samples:  4622800
Num overruns detected:0
Num transmitted samples:  3008276544
Num sequence errors (Tx): 0
Num sequence errors (Rx): 15
Num underruns detected:   0
Num late commands:0
Num timeouts (Tx):0
Num timeouts (Rx):0
  Done!

  tcdforge@x310a:/usr/local/lib/lib/uhd/examples$

[Touch-packages] [Bug 1853638] Re: BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet device seems to be dropping data

2020-01-28 Thread Edwin Peer
I am an engineer at Broadcom and have been assigned to investigate this
issue. To that end, I have a few clarifying questions:

1a) What is the benchmark tool you are using and could you provide a
link to where I can get it?

 b) What kind of network traffic is it sending?

2a) In what units are the data rate parameters "--rx_rate 10e6 --tx_rate
10e6" specified?

 b) What data rate are you attempting to send? The report notes that the
platform can't be the issue at 1G, but are you attempting to utilize
10G?

3) Perhaps stating the obvious here, but has anybody looked into the
warning?

"[WARNING] [UHD] Unable to set the thread priority. Performance may be
negatively affected."

which is probably related to this error:

"EnvironmentError: OSError: error in pthread_setschedparam"

4 a) I am personally unfamiliar with the USRP x310, could you provide
some more information about it? Googling for it seems to indicate it is
some kind of software defined radio platform?

  b) Is there a way to get access to one to reproduce and diagnose this
issue?

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/1853638

Title:
  BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet device seems to be
  dropping data

Status in linux package in Ubuntu:
  Confirmed
Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  The issue appears to be with the BCM57416 NetXtreme-E Dual-Media 10G
  RDMA Ethernet device seems to be dropping data

  Basically, we are dropping data, as you can see from the benchmark
  tool as follows:

  tcdforge@x310a:/usr/local/lib/lib/uhd/examples$ ./benchmark_rate --rx_rate 
10e6 --tx_rate 10e6 --duration 300
  [INFO] [UHD] linux; GNU C++ version 5.4.0 20160609; Boost_105800; 
UHD_3.14.1.1-0-g98c7c986
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam

  [00:00:00.07] Creating the usrp device with: ...
  [INFO] [X300] X300 initialization sequence...
  [INFO] [X300] Maximum frame size: 1472 bytes.
  [INFO] [X300] Radio 1x clock: 200 MHz
  [INFO] [GPS] Found an internal GPSDO: LC_XO, Firmware Rev 0.929a
  [INFO] [0/DmaFIFO_0] Initializing block control (NOC ID: 0xF1F0D000)
  [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1308 MB/s)
  [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1316 MB/s)
  [INFO] [0/Radio_0] Initializing block control (NOC ID: 0x12AD1001)
  [INFO] [0/Radio_1] Initializing block control (NOC ID: 0x12AD1001)
  [INFO] [0/DDC_0] Initializing block control (NOC ID: 0xDDC0)
  [INFO] [0/DDC_1] Initializing block control (NOC ID: 0xDDC0)
  [INFO] [0/DUC_0] Initializing block control (NOC ID: 0xD0C0)
  [INFO] [0/DUC_1] Initializing block control (NOC ID: 0xD0C0)
  Using Device: Single USRP:
Device: X-Series Device
Mboard 0: X310
RX Channel: 0
  RX DSP: 0
  RX Dboard: A
  RX Subdev: SBX-120 RX
RX Channel: 1
  RX DSP: 0
  RX Dboard: B
  RX Subdev: SBX-120 RX
TX Channel: 0
  TX DSP: 0
  TX Dboard: A
  TX Subdev: SBX-120 TX
TX Channel: 1
  TX DSP: 0
  TX Dboard: B
  TX Subdev: SBX-120 TX

  [00:00:04.305374] Setting device timestamp to 0...
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam
  [00:00:04.310990] Testing receive rate 10.00 Msps on 1 channels
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam
  [00:00:04.318356] Testing transmit rate 10.00 Msps on 1 channels
  [00:00:06.693119] Detected Rx sequence error.
  D[00:00:09.402843] Detected Rx sequence error.
  DD[00:00:40.927978] Detected Rx sequence error.
  D[00:01:44.982243] Detected Rx sequence error.
  D[00:02:11.400692] Detected Rx sequence error.
  D[00:02:14.805292] Detected Rx sequence error.
  D[00:02:41.875596] Detected Rx sequence error.
  D[00:03:06.927743] Detected Rx sequence error.
  D[00:03:47.967891] Detected Rx sequence error.
  D[00:03:58.233659] Detected Rx sequence error.
  D[00:03:58.876588] Detected Rx sequence error.
  D[00:04:03.139770] Detected Rx sequence error.
  D[00:04:45.287465] Detected Rx sequence error.
  D[00:04:56.425845] Detected Rx sequence error.
  D[00:04:57.929209] Detected Rx sequence error.
  [00:05:04.529548] Benchmark complete.
  Benchmark rate summary:
Num received samples: 2995435936
Num dropped samples:  4622800
Num overruns detected:0
Num transm

[Touch-packages] [Bug 1853638] Re: BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet device seems to be dropping data

2020-01-28 Thread Edwin Peer
Could you also please dump the ethtool statistics for the NIC?

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/1853638

Title:
  BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet device seems to be
  dropping data

Status in linux package in Ubuntu:
  Confirmed
Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  The issue appears to be with the BCM57416 NetXtreme-E Dual-Media 10G
  RDMA Ethernet device seems to be dropping data

  Basically, we are dropping data, as you can see from the benchmark
  tool as follows:

  tcdforge@x310a:/usr/local/lib/lib/uhd/examples$ ./benchmark_rate --rx_rate 
10e6 --tx_rate 10e6 --duration 300
  [INFO] [UHD] linux; GNU C++ version 5.4.0 20160609; Boost_105800; 
UHD_3.14.1.1-0-g98c7c986
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam

  [00:00:00.07] Creating the usrp device with: ...
  [INFO] [X300] X300 initialization sequence...
  [INFO] [X300] Maximum frame size: 1472 bytes.
  [INFO] [X300] Radio 1x clock: 200 MHz
  [INFO] [GPS] Found an internal GPSDO: LC_XO, Firmware Rev 0.929a
  [INFO] [0/DmaFIFO_0] Initializing block control (NOC ID: 0xF1F0D000)
  [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1308 MB/s)
  [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1316 MB/s)
  [INFO] [0/Radio_0] Initializing block control (NOC ID: 0x12AD1001)
  [INFO] [0/Radio_1] Initializing block control (NOC ID: 0x12AD1001)
  [INFO] [0/DDC_0] Initializing block control (NOC ID: 0xDDC0)
  [INFO] [0/DDC_1] Initializing block control (NOC ID: 0xDDC0)
  [INFO] [0/DUC_0] Initializing block control (NOC ID: 0xD0C0)
  [INFO] [0/DUC_1] Initializing block control (NOC ID: 0xD0C0)
  Using Device: Single USRP:
Device: X-Series Device
Mboard 0: X310
RX Channel: 0
  RX DSP: 0
  RX Dboard: A
  RX Subdev: SBX-120 RX
RX Channel: 1
  RX DSP: 0
  RX Dboard: B
  RX Subdev: SBX-120 RX
TX Channel: 0
  TX DSP: 0
  TX Dboard: A
  TX Subdev: SBX-120 TX
TX Channel: 1
  TX DSP: 0
  TX Dboard: B
  TX Subdev: SBX-120 TX

  [00:00:04.305374] Setting device timestamp to 0...
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam
  [00:00:04.310990] Testing receive rate 10.00 Msps on 1 channels
  [WARNING] [UHD] Unable to set the thread priority. Performance may be 
negatively affected.
  Please see the general application notes in the manual for instructions.
  EnvironmentError: OSError: error in pthread_setschedparam
  [00:00:04.318356] Testing transmit rate 10.00 Msps on 1 channels
  [00:00:06.693119] Detected Rx sequence error.
  D[00:00:09.402843] Detected Rx sequence error.
  DD[00:00:40.927978] Detected Rx sequence error.
  D[00:01:44.982243] Detected Rx sequence error.
  D[00:02:11.400692] Detected Rx sequence error.
  D[00:02:14.805292] Detected Rx sequence error.
  D[00:02:41.875596] Detected Rx sequence error.
  D[00:03:06.927743] Detected Rx sequence error.
  D[00:03:47.967891] Detected Rx sequence error.
  D[00:03:58.233659] Detected Rx sequence error.
  D[00:03:58.876588] Detected Rx sequence error.
  D[00:04:03.139770] Detected Rx sequence error.
  D[00:04:45.287465] Detected Rx sequence error.
  D[00:04:56.425845] Detected Rx sequence error.
  D[00:04:57.929209] Detected Rx sequence error.
  [00:05:04.529548] Benchmark complete.
  Benchmark rate summary:
Num received samples: 2995435936
Num dropped samples:  4622800
Num overruns detected:0
Num transmitted samples:  3008276544
Num sequence errors (Tx): 0
Num sequence errors (Rx): 15
Num underruns detected:   0
Num late commands:0
Num timeouts (Tx):0
Num timeouts (Rx):0
  Done!

  tcdforge@x310a:/usr/local/lib/lib/uhd/examples$

  
  In this particular case description, the nodes are USRP x310s. However, we 
have the same issue with N210 nodes dropping samples connected to the BCM57416 
NetXtreme-E Dual-Media 10G RDMA Ethernet device.

  There is no problem with the USRPs themselves, as we have tested them
  with normal 1G network cards and have no dropped samples.

  Personally I think its something to do with the 10G network card,
  possibly on a ubuntu driver???

  Note, Dell have said there is no hardware problem with the 10G
  interfaces

  I have followed the troubleshooting information on this link to try determine 
the problem: https://files.ettus.com/manual/page_usrp_x3x0_config.html
  - There is no firewall on that port