diff options
| author | Rey Tucker <rey.tucker@nuand.com> | 2017-08-09 16:15:08 -0400 |
|---|---|---|
| committer | Dimitri Stolnikov <horiz0n@gmx.net> | 2018-08-15 19:53:26 +0200 |
| commit | c4a078136736f21d9dba9b02650e9b9a600f0534 (patch) | |
| tree | 281004e332a30792667df0477fa1fd0e10c78668 | |
| parent | c8e69edb7b4dbebfe60e7be3702664d29dfd7dec (diff) | |
bladerf_common: tweak buffer/transfer settings
Based on experimentation, a good value for transfers seems to be 16, but
more buffers are definitely warranted for an optimal default experience.
| -rw-r--r-- | lib/bladerf/bladerf_common.cc | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/lib/bladerf/bladerf_common.cc b/lib/bladerf/bladerf_common.cc index 1b6c1db..22bfc74 100644 --- a/lib/bladerf/bladerf_common.cc +++ b/lib/bladerf/bladerf_common.cc @@ -40,8 +40,9 @@ #include "bladerf_common.h" -#define NUM_BUFFERS 32 +#define NUM_BUFFERS 256 #define NUM_SAMPLES_PER_BUFFER (4 * 1024) +#define NUM_TRANSFERS 16 using namespace boost::assign; @@ -584,12 +585,12 @@ void bladerf_common::init(dict_t &dict, bladerf_direction direction) } /* If the user hasn't specified the desired number of transfers, set it to - * min(32, num_buffers / 2) */ + * min(NUM_TRANSFERS, num_buffers / 2) */ if (_num_transfers == 0) { _num_transfers = _num_buffers / 2; - if (_num_transfers > 32) { - _num_transfers = 32; + if (_num_transfers > NUM_TRANSFERS) { + _num_transfers = NUM_TRANSFERS; } } else if (_num_transfers >= _num_buffers) { _num_transfers = _num_buffers - 1; @@ -599,6 +600,12 @@ void bladerf_common::init(dict_t &dict, bladerf_direction direction) << std::endl; } + std::cerr << _pfx + << "Buffers: " << _num_buffers << ", " + << "Samples per buffer: " << _samples_per_buffer << ", " + << "Transfers: " << _num_transfers + << std::endl; + _conv_buf = static_cast<int16_t *>(malloc(_conv_buf_size * 2 * sizeof(int16_t))); if (NULL == _conv_buf) { |