Re: [USRP-users] x300 latency over 10GigE

2021-03-10 Thread Doug Blackburn via USRP-users
A quick update ... I added #include to my includes and the following code to UHD_SAFE_MAIN: = uhd::device3::sptr usrp3 = usrp->get_device3(); uhd::rfnoc::dma_fifo_block_ctrl::sptr dmafifo_block_ctrl = usrp3->get_block_ctrl(

Re: [USRP-users] x300 latency over 10GigE

2021-03-10 Thread Doug Blackburn via USRP-users
Brian -- Thanks so much! I sprinkled my comments in below : On Wed, Mar 10, 2021 at 1:42 PM Brian Padalino wrote: > On Wed, Mar 10, 2021 at 12:39 PM Doug Blackburn wrote: > >> Brian, >> >> I've seen this using UHD-3.14 and UHD-3.15.LTS. >> > > The DMA FIFO block default size is set here in

Re: [USRP-users] x300 latency over 10GigE

2021-03-10 Thread Doug Blackburn via USRP-users
9, 2021 at 10:03 PM Doug Blackburn via USRP-users < > usrp-users@lists.ettus.com> wrote: > >> Hello -- >> >> I've got some questions re: latency with the x300 over the 10GigE >> interface. >> >> If I use the latency_test example operating at a rate of

Re: [USRP-users] x300 latency over 10GigE

2021-03-09 Thread Doug Blackburn via USRP-users
uldn’t you be scaling your num_tx_samples by the time per sample when > calculating the expectedTime? > > Sent from my iPhone > > On Mar 9, 2021, at 10:03 PM, Doug Blackburn via USRP-users < > usrp-users@lists.ettus.com> wrote: > >  > Hello -- > > I've got

[USRP-users] x300 latency over 10GigE

2021-03-09 Thread Doug Blackburn via USRP-users
Hello -- I've got some questions re: latency with the x300 over the 10GigE interface. If I use the latency_test example operating at a rate of 50 MSPS, I have no issues with a latency of 1ms. The latency test receives data, examines the time stamp, and transmits a single packet. I have an