From 223b3793485a76f87599d39364b1003c2ca7c49c Mon Sep 17 00:00:00 2001 From: Perttu Ahola Date: Tue, 31 May 2011 00:15:43 +0300 Subject: [PATCH] Reduced the CPU usage of the sent block selector algorithm --- minetest.conf.example | 11 ++- src/defaultsettings.cpp | 3 +- src/game.cpp | 19 +++++ src/main.cpp | 33 ++++++- src/main.h | 4 + src/map.cpp | 6 +- src/mapblock.cpp | 4 +- src/profiler.h | 131 ++++++++++++++++++++++++++++ src/server.cpp | 185 ++++++++++++++++++++++++++++++---------- src/server.h | 11 +++ src/utility.h | 3 + 11 files changed, 355 insertions(+), 55 deletions(-) create mode 100644 src/profiler.h diff --git a/minetest.conf.example b/minetest.conf.example index 1a1dbe0f..74318685 100644 --- a/minetest.conf.example +++ b/minetest.conf.example @@ -92,10 +92,6 @@ # Server side stuff # -# Set to true to enable experimental features -# (varies from version to version, see wiki) -#enable_experimental = false - # Map directory (everything in the world is stored here) #map-dir = /home/palle/custom_map @@ -112,6 +108,13 @@ # Gives some stuff to players at the beginning #give_initial_stuff = false +# Set to true to enable experimental features +# (varies from version to version, see wiki) +#enable_experimental = false + +# Profiler data print interval. 0 = disable. +#profiler_print_interval = 10 + # Player and object positions are sent at intervals specified by this #objectdata_inverval = 0.2 diff --git a/src/defaultsettings.cpp b/src/defaultsettings.cpp index 6fcdc1db..73f22a7f 100644 --- a/src/defaultsettings.cpp +++ b/src/defaultsettings.cpp @@ -74,12 +74,13 @@ void set_default_settings() g_settings.setDefault("give_initial_stuff", "false"); g_settings.setDefault("default_password", ""); g_settings.setDefault("default_privs", "build, shout"); + g_settings.setDefault("profiler_print_interval", "0"); g_settings.setDefault("objectdata_interval", "0.2"); g_settings.setDefault("active_object_range", "2"); g_settings.setDefault("max_simultaneous_block_sends_per_client", "1"); //g_settings.setDefault("max_simultaneous_block_sends_per_client", "2"); - g_settings.setDefault("max_simultaneous_block_sends_server_total", "4"); + g_settings.setDefault("max_simultaneous_block_sends_server_total", "8"); g_settings.setDefault("max_block_send_distance", "8"); g_settings.setDefault("max_block_generate_distance", "8"); g_settings.setDefault("time_send_interval", "20"); diff --git a/src/game.cpp b/src/game.cpp index 6932b45f..e8e6cb71 100644 --- a/src/game.cpp +++ b/src/game.cpp @@ -903,6 +903,10 @@ void the_game( bool first_loop_after_window_activation = true; + // TODO: Convert the static interval timers to these + // Interval limiter for profiler + IntervalLimiter m_profiler_interval; + // Time is in milliseconds // NOTE: getRealTime() causes strange problems in wine (imprecision?) // NOTE: So we have to use getTime() and call run()s between them @@ -1089,6 +1093,21 @@ void the_game( } } + /* + Profiler + */ + float profiler_print_interval = + g_settings.getFloat("profiler_print_interval"); + if(profiler_print_interval != 0) + { + if(m_profiler_interval.step(0.030, profiler_print_interval)) + { + dstream<<"Profiler:"< diff --git a/src/map.cpp b/src/map.cpp index a49de3c4..f9809e9f 100644 --- a/src/map.cpp +++ b/src/map.cpp @@ -5692,9 +5692,9 @@ void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass) p_nodes_min.Y / MAP_BLOCKSIZE - 1, p_nodes_min.Z / MAP_BLOCKSIZE - 1); v3s16 p_blocks_max( - p_nodes_max.X / MAP_BLOCKSIZE + 1, - p_nodes_max.Y / MAP_BLOCKSIZE + 1, - p_nodes_max.Z / MAP_BLOCKSIZE + 1); + p_nodes_max.X / MAP_BLOCKSIZE, + p_nodes_max.Y / MAP_BLOCKSIZE, + p_nodes_max.Z / MAP_BLOCKSIZE); u32 vertex_count = 0; diff --git a/src/mapblock.cpp b/src/mapblock.cpp index c448ef23..b2f972dd 100644 --- a/src/mapblock.cpp +++ b/src/mapblock.cpp @@ -540,10 +540,10 @@ void updateFastFaceRow( v3s16 p_next; - bool next_makes_face; + bool next_makes_face = false; v3s16 next_p_corrected; v3s16 next_face_dir_corrected; - u8 next_lights[4]; + u8 next_lights[4] = {0,0,0,0}; TileSpec next_tile; // If at last position, there is nothing to compare to and diff --git a/src/profiler.h b/src/profiler.h new file mode 100644 index 00000000..a30e34a7 --- /dev/null +++ b/src/profiler.h @@ -0,0 +1,131 @@ +/* +Minetest-c55 +Copyright (C) 2011 celeron55, Perttu Ahola + +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 2 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, write to the Free Software Foundation, Inc., +51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#ifndef PROFILER_HEADER +#define PROFILER_HEADER + +#include "common_irrlicht.h" +#include +#include "utility.h" +#include +#include + +/* + Time profiler +*/ + +class Profiler +{ +public: + Profiler() + { + m_mutex.Init(); + } + + void add(const std::string &name, u32 duration) + { + JMutexAutoLock lock(m_mutex); + core::map::Node *n = m_data.find(name); + if(n == NULL) + { + m_data[name] = duration; + } + else + { + n->setValue(n->getValue()+duration); + } + } + + void clear() + { + JMutexAutoLock lock(m_mutex); + for(core::map::Iterator + i = m_data.getIterator(); + i.atEnd() == false; i++) + { + i.getNode()->setValue(0); + } + } + + void print(std::ostream &o) + { + JMutexAutoLock lock(m_mutex); + for(core::map::Iterator + i = m_data.getIterator(); + i.atEnd() == false; i++) + { + std::string name = i.getNode()->getKey(); + o<getValue(); + o< m_data; +}; + +class ScopeProfiler +{ +public: + ScopeProfiler(Profiler *profiler, const std::string &name): + m_profiler(profiler), + m_name(name), + m_timer(NULL) + { + if(m_profiler) + m_timer = new TimeTaker(m_name.c_str()); + } + // name is copied + ScopeProfiler(Profiler *profiler, const char *name): + m_profiler(profiler), + m_name(name), + m_timer(NULL) + { + if(m_profiler) + m_timer = new TimeTaker(m_name.c_str()); + } + ~ScopeProfiler() + { + if(m_timer) + { + u32 duration = m_timer->stop(true); + if(m_profiler) + m_profiler->add(m_name, duration); + delete m_timer; + } + } +private: + Profiler *m_profiler; + std::string m_name; + TimeTaker *m_timer; +}; + +#endif + diff --git a/src/server.cpp b/src/server.cpp index 56874c46..6f1f1e6e 100644 --- a/src/server.cpp +++ b/src/server.cpp @@ -312,11 +312,14 @@ void RemoteClient::GetNextBlocks(Server *server, float dtime, TimeTaker timer("RemoteClient::GetNextBlocks", &timer_result);*/ // Increment timers - m_nearest_unsent_reset_timer += dtime; m_nothing_to_send_pause_timer -= dtime; if(m_nothing_to_send_pause_timer >= 0) + { + // Keep this reset + m_nearest_unsent_reset_timer = 0; return; + } // Won't send anything if already sending if(m_blocks_sending.size() >= g_settings.getU16 @@ -326,14 +329,21 @@ void RemoteClient::GetNextBlocks(Server *server, float dtime, return; } + //TimeTaker timer("RemoteClient::GetNextBlocks"); + Player *player = server->m_env.getPlayer(peer_id); assert(player != NULL); v3f playerpos = player->getPosition(); v3f playerspeed = player->getSpeed(); + v3f playerspeeddir(0,0,0); + if(playerspeed.getLength() > 1.0*BS) + playerspeeddir = playerspeed / playerspeed.getLength(); + // Predict to next block + v3f playerpos_predicted = playerpos + playerspeeddir*MAP_BLOCKSIZE*BS; - v3s16 center_nodepos = floatToInt(playerpos, BS); + v3s16 center_nodepos = floatToInt(playerpos_predicted, BS); v3s16 center = getNodeBlockPos(center_nodepos); @@ -344,6 +354,9 @@ void RemoteClient::GetNextBlocks(Server *server, float dtime, camera_dir.rotateYZBy(player->getPitch()); camera_dir.rotateXZBy(player->getYaw()); + /*dstream<<"camera_dir=("<getPlayerName(peer_id)< d_start+1) + d_max = d_start+1; + /*if(d_max_gen > d_start+2) + d_max_gen = d_start+2;*/ + //dstream<<"Starting from "<= 3) + if((s16)m_nothing_to_send_counter >= + g_settings.getS16("max_block_send_distance")) { // Pause time in seconds - m_nothing_to_send_pause_timer = 2.0; + m_nothing_to_send_pause_timer = 1.0; + dstream<<"nothing to send to " + <getPlayerName(peer_id) + <<" (d="< modified_blocks; m_env.getMap().transformLiquids(modified_blocks); #if 0 @@ -1298,10 +1360,11 @@ void Server::AsyncRunStep() */ { //dstream<<"Server: Checking added and deleted active objects"<* > buffered_messages; @@ -1598,6 +1663,9 @@ void Server::AsyncRunStep() { JMutexAutoLock lock1(m_env_mutex); JMutexAutoLock lock2(m_con_mutex); + + ScopeProfiler sp(&g_profiler, "Server: sending mbo positions"); + SendObjectData(counter); counter = 0.0; @@ -1612,7 +1680,9 @@ void Server::AsyncRunStep() JMutexAutoLock envlock(m_env_mutex); JMutexAutoLock conlock(m_con_mutex); - + + ScopeProfiler sp(&g_profiler, "Server: stepping node metadata"); + core::map changed_blocks; m_env.getMap().nodeMetadataStep(dtime, changed_blocks); @@ -1655,6 +1725,8 @@ void Server::AsyncRunStep() { counter = 0.0; + ScopeProfiler sp(&g_profiler, "Server: saving stuff"); + // Auth stuff m_authmanager.save(); @@ -3646,20 +3718,24 @@ void Server::SendBlocks(float dtime) core::array queue; s32 total_sending = 0; - - for(core::map::Iterator - i = m_clients.getIterator(); - i.atEnd() == false; i++) + { - RemoteClient *client = i.getNode()->getValue(); - assert(client->peer_id == i.getNode()->getKey()); + ScopeProfiler sp(&g_profiler, "Server: selecting blocks for sending"); - total_sending += client->SendingCount(); - - if(client->serialization_version == SER_FMT_VER_INVALID) - continue; - - client->GetNextBlocks(this, dtime, queue); + for(core::map::Iterator + i = m_clients.getIterator(); + i.atEnd() == false; i++) + { + RemoteClient *client = i.getNode()->getValue(); + assert(client->peer_id == i.getNode()->getKey()); + + total_sending += client->SendingCount(); + + if(client->serialization_version == SER_FMT_VER_INVALID) + continue; + + client->GetNextBlocks(this, dtime, queue); + } } // Sort. @@ -4531,25 +4607,48 @@ void dedicated_server_loop(Server &server, bool &kill) { DSTACK(__FUNCTION_NAME); - std::cout<PrintLine(&std::cout); + i->PrintLine(&dstream); } } sum_old = sum; diff --git a/src/server.h b/src/server.h index 7b73e476..6bee1068 100644 --- a/src/server.h +++ b/src/server.h @@ -500,6 +500,15 @@ private: // When called, connection mutex should be locked RemoteClient* getClient(u16 peer_id); + // When called, environment mutex should be locked + std::string getPlayerName(u16 peer_id) + { + Player *player = m_env.getPlayer(peer_id); + if(player == NULL) + return "[id="+itos(peer_id); + return player->getName(); + } + /* Get a player from memory or creates one. If player is already connected, return NULL @@ -627,6 +636,8 @@ private: */ u16 m_ignore_map_edit_events_peer_id; + Profiler *m_profiler; + friend class EmergeThread; friend class RemoteClient; }; diff --git a/src/utility.h b/src/utility.h index f18d3127..534aea48 100644 --- a/src/utility.h +++ b/src/utility.h @@ -244,6 +244,9 @@ inline f32 readF1000(std::istream &is) { char buf[2]; is.read(buf, 2); + // TODO: verify if this gets rid of the valgrind warning + //if(is.gcount() != 2) + // return 0; return readF1000((u8*)buf); } -- 2.30.2