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//
// Copyright 2010-2013 Ettus Research LLC
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
#include "xport_benchmarker.hpp"
#include <chrono>
#include <thread>
namespace uhd { namespace transport {
const device_addr_t& xport_benchmarker::benchmark_throughput_chdr
(
zero_copy_if::sptr tx_transport,
zero_copy_if::sptr rx_transport,
uint32_t sid,
bool big_endian,
uint32_t duration_ms)
{
vrt::if_packet_info_t pkt_info;
_initialize_chdr(tx_transport, rx_transport, sid, pkt_info);
_reset_counters();
boost::posix_time::ptime start_time(boost::posix_time::microsec_clock::local_time());
_tx_thread.reset(new boost::thread(boost::bind(&xport_benchmarker::_stream_tx, this, tx_transport.get(), &pkt_info, big_endian)));
_rx_thread.reset(new boost::thread(boost::bind(&xport_benchmarker::_stream_rx, this, rx_transport.get(), &pkt_info, big_endian)));
std::this_thread::sleep_for(std::chrono::milliseconds(duration_ms));
_tx_thread->interrupt();
_rx_thread->interrupt();
_tx_thread->join();
_rx_thread->join();
boost::posix_time::ptime stop_time(boost::posix_time::microsec_clock::local_time());
double duration_s = ((double)(stop_time-start_time).total_microseconds())/1e6;
uint64_t tx_bytes = pkt_info.num_payload_words32*sizeof(uint32_t)*_num_tx_packets;
uint64_t rx_bytes = pkt_info.num_payload_words32*sizeof(uint32_t)*_num_rx_packets;
double tx_rate = (((double)tx_bytes)/duration_s);
double rx_rate = (((double)rx_bytes)/duration_s);
_results["TX-Bytes"] = (boost::format("%.2fMB") % (tx_bytes/(1024*1024))).str();
_results["RX-Bytes"] = (boost::format("%.2fMB") % (rx_bytes/(1024*1024))).str();
_results["TX-Throughput"] = (boost::format("%.2fMB/s") % (tx_rate/(1024*1024))).str();
_results["RX-Throughput"] = (boost::format("%.2fMB/s") % (rx_rate/(1024*1024))).str();
_results["TX-Timeouts"] = std::to_string(_num_tx_timeouts);
_results["RX-Timeouts"] = std::to_string(_num_rx_timeouts);
_results["Data-Errors"] = std::to_string(_num_data_errors);
return _results;
}
void xport_benchmarker::_stream_tx(zero_copy_if* transport, vrt::if_packet_info_t* pkt_info, bool big_endian)
{
while (not boost::this_thread::interruption_requested()) {
managed_send_buffer::sptr buff = transport->get_send_buff(_tx_timeout);
if (buff) {
uint32_t *packet_buff = buff->cast<uint32_t *>();
//Populate packet
if (big_endian) {
vrt::if_hdr_pack_be(packet_buff, *pkt_info);
} else {
vrt::if_hdr_pack_le(packet_buff, *pkt_info);
}
//send the buffer over the interface
buff->commit(sizeof(uint32_t)*(pkt_info->num_packet_words32));
_num_tx_packets++;
} else {
_num_tx_timeouts++;
}
}
}
void xport_benchmarker::_stream_rx(zero_copy_if* transport, const vrt::if_packet_info_t* exp_pkt_info, bool big_endian)
{
while (not boost::this_thread::interruption_requested()) {
managed_recv_buffer::sptr buff = transport->get_recv_buff(_rx_timeout);
if (buff) {
//Extract packet info
vrt::if_packet_info_t pkt_info;
pkt_info.link_type = exp_pkt_info->link_type;
pkt_info.num_packet_words32 = buff->size()/sizeof(uint32_t);
const uint32_t *packet_buff = buff->cast<const uint32_t *>();
_num_rx_packets++;
//unpacking can fail
try {
if (big_endian) {
vrt::if_hdr_unpack_be(packet_buff, pkt_info);
} else {
vrt::if_hdr_unpack_le(packet_buff, pkt_info);
}
if (exp_pkt_info->packet_type != pkt_info.packet_type ||
exp_pkt_info->num_payload_bytes != pkt_info.num_payload_bytes) {
_num_data_errors++;
}
} catch(const std::exception &ex) {
_num_data_errors++;
}
} else {
_num_rx_timeouts++;
}
}
}
void xport_benchmarker::_reset_counters(void)
{
_num_tx_packets = 0;
_num_rx_packets = 0;
_num_tx_timeouts = 0;
_num_rx_timeouts = 0;
_num_data_errors = 0;
}
void xport_benchmarker::_initialize_chdr(
zero_copy_if::sptr tx_transport,
zero_copy_if::sptr rx_transport,
uint32_t sid,
vrt::if_packet_info_t& pkt_info)
{
_tx_timeout = 0.5;
_rx_timeout = 0.5;
size_t frame_size = std::min(tx_transport->get_send_frame_size(), rx_transport->get_recv_frame_size());
pkt_info.link_type = vrt::if_packet_info_t::LINK_TYPE_CHDR;
pkt_info.packet_type = vrt::if_packet_info_t::PACKET_TYPE_DATA;
pkt_info.num_packet_words32 = (frame_size/sizeof(uint32_t));
pkt_info.num_payload_words32 = pkt_info.num_packet_words32 - 2;
pkt_info.num_payload_bytes = pkt_info.num_payload_words32*sizeof(uint32_t);
pkt_info.packet_count = 0;
pkt_info.sob = false;
pkt_info.eob = false;
pkt_info.sid = sid;
pkt_info.has_sid = true;
pkt_info.has_cid = false;
pkt_info.has_tsi = false;
pkt_info.has_tsf = false;
pkt_info.has_tlr = false;
}
}}
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