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Diffstat (limited to 'src/p2p/network_throttle-detail.cpp')
| -rw-r--r-- | src/p2p/network_throttle-detail.cpp | 382 |
1 files changed, 382 insertions, 0 deletions
diff --git a/src/p2p/network_throttle-detail.cpp b/src/p2p/network_throttle-detail.cpp new file mode 100644 index 000000000..6ea3076a9 --- /dev/null +++ b/src/p2p/network_throttle-detail.cpp @@ -0,0 +1,382 @@ +/// @file +/// @author rfree (current maintainer in monero.cc project) +/// @brief implementaion for throttling of connection (count and rate-limit speed etc) + +// Copyright (c) 2014, The Monero Project +// +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without modification, are +// permitted provided that the following conditions are met: +// +// 1. Redistributions of source code must retain the above copyright notice, this list of +// conditions and the following disclaimer. +// +// 2. Redistributions in binary form must reproduce the above copyright notice, this list +// of conditions and the following disclaimer in the documentation and/or other +// materials provided with the distribution. +// +// 3. Neither the name of the copyright holder nor the names of its contributors may be +// used to endorse or promote products derived from this software without specific +// prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY +// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL +// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, +// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, +// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF +// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +/* rfree: implementation for throttle details */ + +#include <boost/asio.hpp> +#include <string> +#include <vector> +#include <boost/noncopyable.hpp> +#include <boost/shared_ptr.hpp> +#include <atomic> + +#include <boost/asio.hpp> +#include <boost/array.hpp> +#include <boost/noncopyable.hpp> +#include <boost/shared_ptr.hpp> +#include <boost/enable_shared_from_this.hpp> +#include <boost/interprocess/detail/atomic.hpp> +#include <boost/thread/thread.hpp> + +#include <memory> + +#include "syncobj.h" + +#include "../../contrib/epee/include/net/net_utils_base.h" +#include "../../contrib/epee/include/misc_log_ex.h" +#include <boost/lambda/bind.hpp> +#include <boost/foreach.hpp> +#include <boost/lambda/lambda.hpp> +#include <boost/uuid/random_generator.hpp> +#include <boost/chrono.hpp> +#include <boost/utility/value_init.hpp> +#include <boost/asio/deadline_timer.hpp> +#include <boost/date_time/posix_time/posix_time.hpp> +#include <boost/thread/thread.hpp> +#include "misc_language.h" +#include "pragma_comp_defs.h" +#include <sstream> +#include <iomanip> +#include <algorithm> + + + +#include <boost/asio/basic_socket.hpp> +#include <boost/asio/ip/unicast.hpp> +#include "../../contrib/epee/include/net/abstract_tcp_server2.h" + +// TODO: +#include "../../src/p2p/network_throttle-detail.hpp" + +#include "../../contrib/otshell_utils/utils.hpp" +using namespace nOT::nUtils; + +// ################################################################################################ +// ################################################################################################ +// the "header part". Not separeted out for .hpp because point of this modification is +// to rebuild just 1 translation unit while working on this code. +// (But maybe common parts will be separated out later though - if needed) +// ################################################################################################ +// ################################################################################################ + +using namespace nOT::nUtils; + +namespace epee +{ +namespace net_utils +{ + + +/* ============================================================================ */ + +class connection_basic_pimpl { + public: + connection_basic_pimpl(const std::string &name); + + static int m_default_tos; + + network_throttle_bw m_throttle; // per-perr + critical_section m_throttle_lock; + + void _packet(size_t packet_size, int phase, int q_len); // execute a sleep ; phase is not really used now(?) could be used for different kinds of sleep e.g. direct/queue write +}; + + +} // namespace +} // namespace + + + + + + +// ################################################################################################ +// ################################################################################################ +// The implementation part +// ################################################################################################ +// ################################################################################################ + +namespace epee +{ +namespace net_utils +{ + +// ================================================================================================ +// network_throttle +// ================================================================================================ + +network_throttle::~network_throttle() { } + +network_throttle::packet_info::packet_info() + : m_size(0) +{ +} + +network_throttle::network_throttle(const std::string &nameshort, const std::string &name, int window_size) + : m_window_size( (window_size==-1) ? 10 : window_size ), + m_history( m_window_size ), m_nameshort(nameshort) +{ + set_name(name); + m_network_add_cost = 128; + m_network_minimal_segment = 256; + m_network_max_segment = 1024*1024; + m_any_packet_yet = false; + m_slot_size = 1.0; // hard coded in few places + m_target_speed = 16 * 1024; // other defaults are probably defined in the command-line parsing code when this class is used e.g. as main global throttle + m_target_MB = 0; + +} + +void network_throttle::set_name(const std::string &name) +{ + m_name = name; +} + +void network_throttle::set_target_speed( network_speed_kbps target ) +{ + m_target_speed = target; + _note_c("net/"+m_nameshort, "Setting LIMIT: " << target << " kbps"); +} + +void network_throttle::set_target_kill( network_MB target ) +{ + _note_c("net/"+m_nameshort, "Setting KILL: " << target << " MB hard limit"); + m_target_MB = target; +} + + +void network_throttle::tick() +{ + double time_now = get_time_seconds(); + if (!m_any_packet_yet) m_start_time = time_now; // starting now + + network_time_seconds current_sample_time_slot = time_to_slot( time_now ); // T=13.7 --> 13 (for 1-second smallwindow) + network_time_seconds last_sample_time_slot = time_to_slot( m_last_sample_time ); + + // moving to next position, and filling gaps + // !! during this loop the m_last_sample_time and last_sample_time_slot mean the variable moved in +1 + // TODO optimize when moving few slots at once + while ( (!m_any_packet_yet) || (last_sample_time_slot < current_sample_time_slot)) + { + LOG_PRINT_L4("Moving counter buffer by 1 second " << last_sample_time_slot << " < " << current_sample_time_slot << " (last time " << m_last_sample_time<<")"); + // rotate buffer + for (size_t i=m_history.size()-1; i>=1; --i) m_history[i] = m_history[i-1]; + m_history[0] = packet_info(); + if (! m_any_packet_yet) + { + m_last_sample_time = time_now; + } + m_last_sample_time += 1; last_sample_time_slot = time_to_slot( m_last_sample_time ); // increase and recalculate time, time slot + m_any_packet_yet=true; + } + m_last_sample_time = time_now; // the real exact last time +} + +void network_throttle::handle_trafic_exact(size_t packet_size) +{ + _handle_trafic_exact(packet_size, packet_size); +} + +void network_throttle::_handle_trafic_exact(size_t packet_size, size_t orginal_size) +{ + tick(); + + calculate_times_struct cts ; calculate_times(packet_size, cts , false, -1); + calculate_times_struct cts2; calculate_times(packet_size, cts2, false, 5); + m_history[0].m_size += packet_size; + + std::ostringstream oss; oss << "["; for (auto sample: m_history) oss << sample.m_size << " "; oss << "]" << std::ends; + std::string history_str = oss.str(); + + logger_handle_net("log/dr-monero/net/inreq-all.data",get_time_seconds(),packet_size); + _info_c( "net/" + m_nameshort , "Throttle " << m_name << ": packet of ~"<<packet_size<<"b " << " (from "<<orginal_size<<" b)" + << " Speed AVG=" << std::setw(4) << ((long int)(cts .average/1024)) <<"[w="<<cts .window<<"]" + << " " << std::setw(4) << ((long int)(cts2.average/1024)) <<"[w="<<cts2.window<<"]" + <<" / " << " Limit="<< ((long int)(m_target_speed/1024)) <<" KiB/sec " + << " " << history_str + ); +} + +void network_throttle::handle_trafic_tcp(size_t packet_size) +{ + size_t all_size = packet_size + m_network_add_cost; + all_size = std::max( m_network_minimal_segment , all_size); + _handle_trafic_exact( all_size , packet_size ); +} + +void network_throttle::handle_congestion(double overheat) { + // TODO +} + +network_time_seconds network_throttle::get_sleep_time_after_tick(size_t packet_size) { + tick(); + return get_sleep_time(packet_size); +} + +void network_throttle::logger_handle_net(const std::string &filename, double time, size_t size) { + std::mutex mutex; + mutex.lock(); { + std::fstream file; + file.open(filename.c_str(), std::ios::app | std::ios::out ); + if(!file.is_open()) + _warn("Can't open file " << filename); + file << time << " " << size/1024 << "\n"; + file.close(); + } mutex.unlock(); +} + +// fine tune this to decide about sending speed: +network_time_seconds network_throttle::get_sleep_time(size_t packet_size) const +{ + //_scope_mark(""); + double D2=0; + calculate_times_struct cts = { 0, 0, 0, 0}; + //calculate_times(packet_size, cts, false, m_window_size/2); D2=cts.delay; + //calculate_times(packet_size, cts, true, m_window_size/2); D2=cts.delay; + calculate_times(packet_size, cts, true, m_window_size); D2=cts.delay; + return D2; +} +double network_throttle::get_current_overheat() const { + auto now = get_time_seconds(); + auto diff = now - m_overheat_time; + auto overheat = m_overheat - diff; + overheat = std::max(m_overheat, 0.); + return overheat; +} + +void network_throttle::set_overheat(double lag) { + m_overheat += lag; + m_overheat_time = get_time_seconds(); + LOG_PRINT_L0("Lag: " << lag << ", overheat: " << m_overheat ); +} + +// MAIN LOGIC: +void network_throttle::calculate_times(size_t packet_size, calculate_times_struct &cts, bool dbg, double force_window) const +{ + const double the_window_size = std::max( (double)m_window_size , + ((force_window>0) ? force_window : m_window_size) + ); + + if (!m_any_packet_yet) { + cts.window=0; cts.average=0; cts.delay=0; + cts.recomendetDataSize = m_network_minimal_segment; // should be overrided by caller anyway + return ; // no packet yet, I can not decide about sleep time + } + + network_time_seconds window_len = (the_window_size-1) * m_slot_size ; // -1 since current slot is not finished + window_len += (m_last_sample_time - time_to_slot(m_last_sample_time)); // add the time for current slot e.g. 13.7-13 = 0.7 + + auto time_passed = get_time_seconds() - m_start_time; + cts.window = std::max( std::min( window_len , time_passed ) , m_slot_size ) ; // window length resulting from size of history but limited by how long ago history was started, + // also at least slot size (e.g. 1 second) to not be ridiculous + // window_len e.g. 5.7 because takes into account current slot time + + size_t Epast = 0; // summ of traffic till now + for (auto sample : m_history) Epast += sample.m_size; + + const size_t E = Epast; + const size_t Enow = Epast + packet_size ; // including the data we're about to send now + + const double M = m_target_speed; // max + const double D1 = (Epast - M*cts.window) / M; // delay - how long to sleep to get back to target speed + const double D2 = (Enow - M*cts.window) / M; // delay - how long to sleep to get back to target speed (including current packet) + + auto O = get_current_overheat(); + auto Ouse = O * 0 ; // XXX TODO + cts.delay = (D1*0.80 + D2*0.20) + Ouse; // finall sleep depends on both with/without current packet + // update_overheat(); + cts.average = Epast/cts.window; // current avg. speed (for info) + + if (Epast <= 0) { + if (cts.delay>=0) cts.delay = 0; // no traffic in history so we will not wait + } + + double Wgood=-1; + { // how much data we recommend now to download + Wgood = the_window_size + 1; + cts.recomendetDataSize = M*cts.window - E; + } + + if (dbg) { + std::ostringstream oss; oss << "["; for (auto sample: m_history) oss << sample.m_size << " "; oss << "]" << std::ends; + std::string history_str = oss.str(); + _dbg1_c( "net/"+m_nameshort+"_c" , + "dbg " << m_name << ": " + << "speed is A=" << std::setw(8) <<cts.average<<" vs " + << "Max=" << std::setw(8) <<M<<" " + << " so sleep: " + << "D=" << std::setw(8) <<cts.delay<<" sec " + << "Overheat=" << std::setw(8) <<O<<" sec " + << "E="<< std::setw(8) << E << " (Enow="<<std::setw(8)<<Enow<<") " + << "M=" << std::setw(8) << M <<" W="<< std::setw(8) << cts.window << " " + << "R=" << std::setw(8) << cts.recomendetDataSize << " Wgood" << std::setw(8) << Wgood << " " + << "History: " << std::setw(8) << history_str << " " + << "m_last_sample_time=" << std::setw(8) << m_last_sample_time + ); + + } +} + +double network_throttle::get_time_seconds() const { + using namespace boost::chrono; + auto point = steady_clock::now(); + auto time_from_epoh = point.time_since_epoch(); + auto ms = duration_cast< milliseconds >( time_from_epoh ).count(); + double ms_f = ms; + return ms_f / 1000.; +} + +size_t network_throttle::get_recommended_size_of_planned_transport_window(double force_window) const { + calculate_times_struct cts = { 0, 0, 0, 0}; + network_throttle::calculate_times(0, cts, true, force_window); + cts.recomendetDataSize += m_network_add_cost; + if (cts.recomendetDataSize<0) cts.recomendetDataSize=0; + if (cts.recomendetDataSize>m_network_max_segment) cts.recomendetDataSize=m_network_max_segment; + size_t RI = (long int)cts.recomendetDataSize; + return RI; +} + +size_t network_throttle::get_recommended_size_of_planned_transport() const { + size_t R1=0,R2=0,R3=0; + R1 = get_recommended_size_of_planned_transport_window( -1 ); + R2 = get_recommended_size_of_planned_transport_window( m_window_size/2); + R3 = get_recommended_size_of_planned_transport_window( 8 ); + auto RM = std::min(R1, std::min(R2,R3)); + + const double a1=70, a2=10, a3=10, am=10; // weight of the various windows in decisssion + return (R1*a1 + R2*a2 + R3*a3 + RM*am) / (a1+a2+a3+am); +} + + +} // namespace +} // namespace + |