Hi Robin,
By doing this, the warnings of buffer size are not coming but SSSSS
persists.

On Wed, Jul 17, 2019 at 4:10 PM Robin Coxe <c...@close-haul.com> wrote:

> Try doing what UHD suggests and resizing the send buffer.
>
> *WARNING] [UDP] The send buffer could not be resized sufficiently.*
> *Target sock buff size: 2500000 bytes.*
> *Actual sock buff size: 1048576 bytes.*
> *See the transport application notes on buffer resizing.*
> *Please run: sudo sysctl -w net.core.wmem_max=2500000*
>
> You can also resize the receive buffer by replacing wmem with rmem.
> ------------------------------
> *From:* USRP-users <usrp-users-boun...@lists.ettus.com> on behalf of
> Sumit Kumar via USRP-users <usrp-users@lists.ettus.com>
> *Sent:* Wednesday, July 17, 2019 7:06 AM
> *To:* Jason Matusiak
> *Cc:* usrp-users@lists.ettus.com
> *Subject:* Re: [USRP-users] Sequence Errors N200
>
> Following is what I am getting after the command you asked to run. The
> 192.168.10.5 gives SSSSSSS.
>
> john@john-Precision-M4600:~/pybombs/src/uhd/host/build/utils$
> ./usrp_burn_mb_eeprom --read-all --args "addr=192.168.10.5"
> Creating USRP device from address: addr=192.168.10.5
> [INFO] [UHD] linux; GNU C++ version 5.4.0 20160609; Boost_105800;
> UHD_3.15.0.git-1-gf83faf28
> [INFO] [USRP2] Opening a USRP2/N-Series device...
> [INFO] [USRP2] Current recv frame size: 1472 bytes
> [INFO] [USRP2] Current send frame size: 1472 bytes
> [WARNING] [UDP] The send buffer could not be resized sufficiently.
> Target sock buff size: 2500000 bytes.
> Actual sock buff size: 1048576 bytes.
> See the transport application notes on buffer resizing.
> Please run: sudo sysctl -w net.core.wmem_max=2500000
> [WARNING] [UDP] The send buffer could not be resized sufficiently.
> Target sock buff size: 2500000 bytes.
> Actual sock buff size: 1048576 bytes.
> See the transport application notes on buffer resizing.
> Please run: sudo sysctl -w net.core.wmem_max=2500000
> [WARNING] [UDP] The send buffer could not be resized sufficiently.
> Target sock buff size: 2500000 bytes.
> Actual sock buff size: 1048576 bytes.
> See the transport application notes on buffer resizing.
> Please run: sudo sysctl -w net.core.wmem_max=2500000
> [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
>
> Fetching current settings from EEPROM...
>     EEPROM ["hardware"] is "2576"
>     EEPROM ["revision"] is ""
>     EEPROM ["product"] is ""
>     EEPROM ["mac-addr"] is "a0:36:fa:26:34:44"
>     EEPROM ["ip-addr"] is "192.168.10.5"
>     EEPROM ["subnet"] is "255.255.255.255"
>     EEPROM ["gateway"] is "255.255.255.255"
>     EEPROM ["gpsdo"] is "none"
>     EEPROM ["serial"] is "E4R14V4UN"
>     EEPROM ["name"] is ""
>
> Power-cycle the USRP device for the changes to take effect.
>
> Done
>
>
> john@john-Precision-M4600:~/pybombs/src/uhd/host/build/utils$
> ./usrp_burn_mb_eeprom --read-all --args "addr=192.168.10.3"
> Creating USRP device from address: addr=192.168.10.3
> [INFO] [UHD] linux; GNU C++ version 5.4.0 20160609; Boost_105800;
> UHD_3.15.0.git-1-gf83faf28
> [INFO] [USRP2] Opening a USRP2/N-Series device...
> [INFO] [USRP2] Current recv frame size: 1472 bytes
> [INFO] [USRP2] Current send frame size: 1472 bytes
> [WARNING] [UDP] The send buffer could not be resized sufficiently.
> Target sock buff size: 2500000 bytes.
> Actual sock buff size: 1048576 bytes.
> See the transport application notes on buffer resizing.
> Please run: sudo sysctl -w net.core.wmem_max=2500000
> [WARNING] [UDP] The send buffer could not be resized sufficiently.
> Target sock buff size: 2500000 bytes.
> Actual sock buff size: 1048576 bytes.
> See the transport application notes on buffer resizing.
> Please run: sudo sysctl -w net.core.wmem_max=2500000
> [WARNING] [UDP] The send buffer could not be resized sufficiently.
> Target sock buff size: 2500000 bytes.
> Actual sock buff size: 1048576 bytes.
> See the transport application notes on buffer resizing.
> Please run: sudo sysctl -w net.core.wmem_max=2500000
> [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
>
> Fetching current settings from EEPROM...
>     EEPROM ["hardware"] is "2576"
>     EEPROM ["revision"] is ""
>     EEPROM ["product"] is ""
>     EEPROM ["mac-addr"] is "a0:36:fa:26:34:42"
>     EEPROM ["ip-addr"] is "192.168.10.3"
>     EEPROM ["subnet"] is "255.255.255.255"
>     EEPROM ["gateway"] is "255.255.255.255"
>     EEPROM ["gpsdo"] is "none"
>     EEPROM ["serial"] is "E4R14V2UN"
>     EEPROM ["name"] is ""
>
> Power-cycle the USRP device for the changes to take effect.
>
> Done
>
>
> On Wed, Jul 17, 2019 at 3:19 PM Jason Matusiak <
> ja...@gardettoengineering.com> wrote:
>
>> You are right, the table of revisions was for the X-series
>>
>> try running the command from your prefix:
>> src/uhd/host/build/utils/usrp_burn_mb_eeprom --args="type=n200" --read-all
>>
>> don't quote me on the type portion, I don't have a board in front of me
>> to see if it is n200 or something else.  I //think// that will report the
>> major and minor revision values (I am grasping at straws here, just trying
>> to figure out what the differences might be).
>>
>> You are connecting the ethernet connections to the two devices through
>> the exact same port on your PC?
>>
>> ------------------------------
>> *From:* Sumit Kumar <cog...@gmail.com>
>> *Sent:* Wednesday, July 17, 2019 8:24 AM
>> *To:* Jason Matusiak <ja...@gardettoengineering.com>
>> *Cc:* usrp-users@lists.ettus.com <usrp-users@lists.ettus.com>
>> *Subject:* Re: [USRP-users] Sequence Errors N200
>>
>> The sticker  for sbx shows F33612 and F33814.
>> How will this help ?
>>
>>
>> On Wed, Jul 17, 2019 at 1:50 PM Jason Matusiak <
>> ja...@gardettoengineering.com> wrote:
>>
>> Sumit,
>>
>> OK, the last idea I have:
>>
>> There is a sticker on the back of the N-series devices it *usually* says
>> the version there, but not always.  This has a little info:
>> https://kb.ettus.com/About_the_Motherboard_and_Daughtercard_EEPROM_on_USRP_Devices#N200.2F210_EEPROM
>>
>> Do they match?
>>
>> ------------------------------
>> *From:* Sumit Kumar <cog...@gmail.com>
>> *Sent:* Wednesday, July 17, 2019 7:45 AM
>> *To:* Jason Matusiak <ja...@gardettoengineering.com>
>> *Cc:* usrp-users@lists.ettus.com <usrp-users@lists.ettus.com>
>> *Subject:* Re: [USRP-users] Sequence Errors N200
>>
>> Hi Jason,
>>
>> Yes they are consistent, I mean the output of uhd_usrp_probe for both
>> N200 is exactly the same (except the ip, serial and mac addr).
>> I do not know where the problem is! Hardware or software
>>
>> Regards
>> Sumit
>>
>> On Wed, Jul 17, 2019 at 1:19 PM Jason Matusiak <
>> ja...@gardettoengineering.com> wrote:
>>
>> I am not really an N-series guy, so this probably won't be helpful.  Have
>> you tried doing a uhd_usrp_probe on both devices and seen that the
>> responses are consistent?
>>
>> ------------------------------
>> *From:* USRP-users <usrp-users-boun...@lists.ettus.com> on behalf of
>> Sumit Kumar via USRP-users <usrp-users@lists.ettus.com>
>> *Sent:* Wednesday, July 17, 2019 7:15 AM
>> *To:* usrp-users@lists.ettus.com <usrp-users@lists.ettus.com>
>> *Subject:* [USRP-users] Sequence Errors N200
>>
>> Hi,
>> I am trying transmit using Ettus N200 (call it A) but getting this error
>> message on the console
>>
>>
>> SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSUSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
>>
>> I looked for it on google and found these links
>>
>> http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/2014-May/037495.html
>>
>> http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/2012-July/032838.html
>>
>> Both the links  suggested problem related to the gigabit port. Then I
>> connected another USRP N200 (call it B) to the same laptop and tried
>> transmitting using that as there were no such sequence error messages.
>>
>> This makes me believe there is some problem with the first USRP, i.e., A.
>>
>> Further I tried with different versions of UHD 3.11, UHD 3.15.. but its
>> the same.
>>
>> Receive is good only transmit is throwing error.
>>
>> Not only with UHD, even in labview, when I transmit, I see nothing coming
>> out from the N200 (A).
>>
>> I am using SBXv2 daughter board.
>>
>> Any clue!
>>
>> Regards
>> --
>> --
>> Sumit kumar
>> Postdoc
>> SnT, Luxembourg
>>
>>
>>
>>
>> --
>> --
>> Sumit kumar
>> Postdoc
>> SnT, Luxembourg
>>
>>
>>
>>
>> --
>> --
>> Sumit kumar
>> Postdoc
>> SnT, Luxembourg
>>
>>
>>
>
> --
> --
> Sumit kumar
> Postdoc
> SnT, Luxembourg
>
>
>

-- 
-- 
Sumit kumar
Postdoc
SnT, Luxembourg
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