diff options
| -rw-r--r-- | host/lib/usrp/x300/x300_impl.hpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/host/lib/usrp/x300/x300_impl.hpp b/host/lib/usrp/x300/x300_impl.hpp index ee42dcf3e..5d3fa4fed 100644 --- a/host/lib/usrp/x300/x300_impl.hpp +++ b/host/lib/usrp/x300/x300_impl.hpp @@ -54,7 +54,10 @@ static const size_t X300_RX_SW_BUFF_SIZE_ETH_MACOS = 0x100000; //1Mib //where an element is 8 bytes. For best throughput ensure that the data frame fits in these buffers. //Also ensure that the kernel has enough frames to hold buffered TX and RX data static const size_t X300_PCIE_RX_DATA_FRAME_SIZE = 8184; //bytes -static const size_t X300_PCIE_TX_DATA_FRAME_SIZE = 8192; //bytes +//static const size_t X300_PCIE_TX_DATA_FRAME_SIZE = 8192; //bytes +// This is a temporary solution: We're throttling PCIe MTU to avoid +// underruns on Tx. Once we solve it on the FPGA side, need revert this commit. +static const size_t X300_PCIE_TX_DATA_FRAME_SIZE = 3000; //bytes static const size_t X300_PCIE_DATA_NUM_FRAMES = 2048; static const size_t X300_PCIE_MSG_FRAME_SIZE = 256; //bytes static const size_t X300_PCIE_MSG_NUM_FRAMES = 64; |