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| author | Ben Hilburn <ben.hilburn@ettus.com> | 2014-07-17 17:57:23 -0700 |
|---|---|---|
| committer | Ben Hilburn <ben.hilburn@ettus.com> | 2014-07-17 17:57:23 -0700 |
| commit | 1af6628eb1edf29dffae771b8f3ada6952a50b69 (patch) | |
| tree | fc0a9dc0f3b36397afed1cd0ec1f93e03a4c4c8e /host/lib/usrp/x300/x300_impl.hpp | |
| parent | 4e8512abf885150404c2485e641d1bf02ea4ed24 (diff) | |
| parent | 0753122ccaccebb15393f6496eafc94e2b1976ec (diff) | |
| download | uhd-1af6628eb1edf29dffae771b8f3ada6952a50b69.tar.gz uhd-1af6628eb1edf29dffae771b8f3ada6952a50b69.tar.bz2 uhd-1af6628eb1edf29dffae771b8f3ada6952a50b69.zip | |
Merge branch 'origin/ashish/rx_pcie_overflows' into maint
Diffstat (limited to 'host/lib/usrp/x300/x300_impl.hpp')
| -rw-r--r-- | host/lib/usrp/x300/x300_impl.hpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/host/lib/usrp/x300/x300_impl.hpp b/host/lib/usrp/x300/x300_impl.hpp index 80f3e8faa..27f20fbd9 100644 --- a/host/lib/usrp/x300/x300_impl.hpp +++ b/host/lib/usrp/x300/x300_impl.hpp @@ -63,7 +63,11 @@ static const size_t X300_RX_SW_BUFF_SIZE_ETH_MACOS = 0x100000; //1Mib static const double X300_RX_SW_BUFF_FULL_FACTOR = 0.90; //Buffer should ideally be 90% full. static const size_t X300_RX_FC_REQUEST_FREQ = 32; //per flow-control window -static const size_t X300_PCIE_DATA_FRAME_SIZE = 8192; //bytes +//The FIFO closest to the DMA controller is 1023 elements deep for RX and 1029 elements deep for TX +//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_DATA_NUM_FRAMES = 2048; static const size_t X300_PCIE_MSG_FRAME_SIZE = 256; //bytes static const size_t X300_PCIE_MSG_NUM_FRAMES = 32; |