1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
//
// Copyright 2010 Ettus Research LLC
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
#include <uhd/utils/thread_priority.hpp>
#include <uhd/utils/safe_main.hpp>
#include <uhd/usrp/simple_usrp.hpp>
#include <boost/math/special_functions/round.hpp>
#include <boost/program_options.hpp>
#include <boost/format.hpp>
#include <iostream>
#include <complex>
namespace po = boost::program_options;
static inline void test_device(
uhd::usrp::simple_usrp::sptr sdev,
double rx_rate_sps,
double duration_secs
){
uhd::device::sptr dev = sdev->get_device();
std::cout << boost::format("Testing receive rate %f Msps (%f second run)") % (rx_rate_sps/1e6) % duration_secs << std::endl;
//allocate recv buffer and metatdata
uhd::rx_metadata_t md;
std::vector<std::complex<float> > buff(dev->get_max_recv_samps_per_packet());
//declare status variables
bool got_first_packet = false;
size_t total_recv_packets = 0;
size_t total_lost_samples = 0;
size_t total_recv_samples = 0;
uhd::time_spec_t initial_time_spec;
uhd::time_spec_t next_expected_time_spec;
sdev->issue_stream_cmd(uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS);
do {
size_t num_rx_samps = dev->recv(
&buff.front(), buff.size(), md,
uhd::io_type_t::COMPLEX_FLOAT32,
uhd::device::RECV_MODE_ONE_PACKET
);
if (num_rx_samps == 0 and md.error_code == uhd::rx_metadata_t::ERROR_CODE_TIMEOUT){
std::cerr << "Unexpected timeout on recv, exit test..." << std::endl;
return;
}
if (num_rx_samps == 0){
std::cerr << "Unexpected error on recv, continuing..." << std::endl;
}
if (not md.has_time_spec){
std::cerr << "Metadata missing time spec, exit test..." << std::endl;
return;
}
total_recv_samples += num_rx_samps;
total_recv_packets++;
if (not got_first_packet){
initial_time_spec = md.time_spec;
next_expected_time_spec = initial_time_spec;
got_first_packet = true;
}
total_lost_samples += boost::math::iround(rx_rate_sps*(md.time_spec - next_expected_time_spec).get_real_secs());
next_expected_time_spec = md.time_spec + uhd::time_spec_t(0, num_rx_samps, rx_rate_sps);
} while((next_expected_time_spec - initial_time_spec) < uhd::time_spec_t(duration_secs));
sdev->issue_stream_cmd(uhd::stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS);
//flush the buffers
while(dev->recv(
&buff.front(), buff.size(), md,
uhd::io_type_t::COMPLEX_FLOAT32,
uhd::device::RECV_MODE_ONE_PACKET
)){
/* NOP */
};
//print a summary
std::cout << std::endl; //go to newline, recv may spew SXSYSZ...
std::cout << boost::format(" Received packets: %d") % total_recv_packets << std::endl;
std::cout << boost::format(" Received samples: %d") % total_recv_samples << std::endl;
std::cout << boost::format(" Lost samples: %d") % total_lost_samples << std::endl;
size_t packets_lost = boost::math::iround(double(total_lost_samples)/dev->get_max_recv_samps_per_packet());
std::cout << boost::format(" Lost packets: %d (approximate)") % packets_lost << std::endl;
double actual_rx_rate_sps = (total_recv_samples*rx_rate_sps)/(total_recv_samples+total_lost_samples);
std::cout << boost::format(" Sustained receive rate: %f Msps") % (actual_rx_rate_sps/1e6) << std::endl;
std::cout << std::endl << std::endl;
}
int UHD_SAFE_MAIN(int argc, char *argv[]){
uhd::set_thread_priority_safe();
//variables to be set by po
std::string args;
double duration;
double only_rate;
//setup the program options
po::options_description desc("Allowed options");
desc.add_options()
("help", "help message")
("args", po::value<std::string>(&args)->default_value(""), "simple uhd device address args")
("duration", po::value<double>(&duration)->default_value(10.0), "duration for each test in seconds")
("rate", po::value<double>(&only_rate), "specify to perform a single test as this rate (sps)")
;
po::variables_map vm;
po::store(po::parse_command_line(argc, argv, desc), vm);
po::notify(vm);
//print the help message
if (vm.count("help")){
std::cout << boost::format("UHD Benchmark RX Rate %s") % desc << std::endl;
return ~0;
}
//create a usrp device
std::cout << std::endl;
std::cout << boost::format("Creating the usrp device with: %s...") % args << std::endl;
uhd::usrp::simple_usrp::sptr sdev = uhd::usrp::simple_usrp::make(args);
std::cout << boost::format("Using Device: %s") % sdev->get_pp_string() << std::endl;
if (not vm.count("rate")){
sdev->set_rx_rate(500e3); //initial rate
while(true){
double rate = sdev->get_rx_rate();
test_device(sdev, rate, duration);
sdev->set_rx_rate(rate*2); //double the rate
if (sdev->get_rx_rate() == rate) break;
}
}
else{
sdev->set_rx_rate(only_rate);
double rate = sdev->get_rx_rate();
test_device(sdev, rate, duration);
}
//finished
std::cout << std::endl << "Done!" << std::endl << std::endl;
return 0;
}
|
