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Add 'parallelrendercnt' - multi-core fullrender support (experimental)

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This commit is contained in:
Mike Primm 2011-08-17 23:14:05 -05:00
parent 7fd2d5bf10
commit fd2085b511
2 changed files with 136 additions and 62 deletions
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193
src/main/java/org/dynmap/MapManager.java
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@ -11,6 +11,7 @@ import java.util.List;
import java.util.Map;
import java.util.TreeSet;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.ScheduledFuture;
@ -42,6 +43,7 @@ public class MapManager {
private DynmapPlugin plug_in;
private long timeslice_int = 0; /* In milliseconds */
private int max_chunk_loads_per_tick = DEFAULT_CHUNKS_PER_TICK;
private int parallelrendercnt = 0;
private int zoomout_period = DEFAULT_ZOOMOUT_PERIOD; /* Zoom-out tile processing period, in seconds */
/* Which fullrenders are active */
@ -96,7 +98,7 @@ public class MapManager {
private class DynmapScheduledThreadPoolExecutor extends ScheduledThreadPoolExecutor {
DynmapScheduledThreadPoolExecutor() {
super(POOL_SIZE);
super(POOL_SIZE + parallelrendercnt);
this.setThreadFactory(new OurThreadFactory());
/* Set shutdown policy to stop everything */
setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
@ -156,7 +158,6 @@ public class MapManager {
TileFlags rendered = null;
LinkedList<MapTile> renderQueue = null;
MapTile tile0 = null;
MapTile tile = null;
int rendercnt = 0;
CommandSender sender;
long timeaccum;
@ -207,7 +208,7 @@ public class MapManager {
}
public String toString() {
return "world=" + world.world.getName() + ", map=" + map + " tile=" + tile;
return "world=" + world.world.getName() + ", map=" + map;
}
public void cleanup() {
@ -219,6 +220,8 @@ public class MapManager {
}
public void run() {
long tstart = System.currentTimeMillis();
MapTile tile = null;
List<MapTile> tileset = null;
if(cancelled) {
cleanup();
@ -292,12 +295,80 @@ public class MapManager {
}
}
}
tile = renderQueue.pollFirst();
if(parallelrendercnt > 1) { /* Doing parallel renders? */
tileset = new ArrayList<MapTile>();
for(int i = 0; i < parallelrendercnt; i++) {
tile = renderQueue.pollFirst();
if(tile != null)
tileset.add(tile);
}
}
else {
tile = renderQueue.pollFirst();
}
}
else { /* Else, single tile render */
tile = tile0;
}
World w = world.world;
boolean notdone = true;
if(tileset != null) {
long save_timeaccum = timeaccum;
List<Future<Boolean>> rslt = new ArrayList<Future<Boolean>>();
final int cnt = tileset.size();
for(int i = 1; i < cnt; i++) { /* Do all but first on other threads */
final MapTile mt = tileset.get(i);
if((mapman != null) && (mapman.render_pool != null)) {
final long ts = tstart;
Future<Boolean> future = mapman.render_pool.submit(new Callable<Boolean>() {
public Boolean call() {
return processTile(mt, mt.world.world, ts, cnt);
}
});
rslt.add(future);
}
}
/* Now, do our render (first one) */
notdone = processTile(tileset.get(0), w, tstart, cnt);
/* Now, join with others */
for(int i = 0; i < rslt.size(); i++) {
try {
notdone = notdone && rslt.get(i).get();
} catch (ExecutionException xx) {
Log.severe(xx);
notdone = false;
} catch (InterruptedException ix) {
notdone = false;
}
}
timeaccum = save_timeaccum + System.currentTimeMillis() - tstart;
}
else {
notdone = processTile(tile, w, tstart, 1);
}
if(notdone) {
if(tile0 == null) { /* fullrender */
long tend = System.currentTimeMillis();
if(timeslice_int > (tend-tstart)) { /* We were fast enough */
scheduleDelayedJob(this, timeslice_int - (tend-tstart));
}
else { /* Schedule to run ASAP */
scheduleDelayedJob(this, 0);
}
}
else {
cleanup();
}
}
else {
cleanup();
}
}
private boolean processTile(MapTile tile, World w, long tstart, int parallelcnt) {
/* Get list of chunks required for tile */
List<DynmapChunk> requiredChunks = tile.getRequiredChunks();
/* If we are doing radius limit render, see if any are inside limits */
@ -316,56 +387,49 @@ public class MapManager {
tile.isHightestBlockYDataNeeded(), tile.isBiomeDataNeeded(),
tile.isRawBiomeDataNeeded());
if(cache == null) {
cleanup();
return; /* Cancelled/aborted */
return false; /* Cancelled/aborted */
}
if(tile0 != null) { /* Single tile? */
if(cache.isEmpty() == false)
tile.render(cache, null);
}
else {
/* Switch to not checking if rendered tile is blank - breaks us on skylands, where tiles can be nominally blank - just work off chunk cache empty */
/* Switch to not checking if rendered tile is blank - breaks us on skylands, where tiles can be nominally blank - just work off chunk cache empty */
if (cache.isEmpty() == false) {
tile.render(cache, mapname);
found.setFlag(tile.tileOrdinalX(),tile.tileOrdinalY(),false);
rendered.setFlag(tile.tileOrdinalX(), tile.tileOrdinalY(), true);
for (MapTile adjTile : map.getAdjecentTiles(tile)) {
if (!found.getFlag(adjTile.tileOrdinalX(),adjTile.tileOrdinalY()) &&
tile.render(cache, mapname);
synchronized(lock) {
// found.setFlag(tile.tileOrdinalX(),tile.tileOrdinalY(),false);
rendered.setFlag(tile.tileOrdinalX(), tile.tileOrdinalY(), true);
for (MapTile adjTile : map.getAdjecentTiles(tile)) {
if (!found.getFlag(adjTile.tileOrdinalX(),adjTile.tileOrdinalY()) &&
!rendered.getFlag(adjTile.tileOrdinalX(),adjTile.tileOrdinalY())) {
found.setFlag(adjTile.tileOrdinalX(), adjTile.tileOrdinalY(), true);
renderQueue.add(adjTile);
found.setFlag(adjTile.tileOrdinalX(), adjTile.tileOrdinalY(), true);
renderQueue.add(adjTile);
}
}
}
}
found.setFlag(tile.tileOrdinalX(), tile.tileOrdinalY(), false);
if(!cache.isEmpty()) {
rendercnt++;
timeaccum += System.currentTimeMillis() - tstart;
if((rendercnt % 100) == 0) {
double msecpertile = (double)timeaccum / (double)rendercnt / (double)activemaplist.size();
if(activemaplist.size() > 1)
sender.sendMessage(rendertype + " of maps [" + activemaps + "] of '" +
synchronized(lock) {
// found.setFlag(tile.tileOrdinalX(), tile.tileOrdinalY(), false);
if(!cache.isEmpty()) {
rendercnt++;
timeaccum += System.currentTimeMillis() - tstart;
if((rendercnt % 100) == 0) {
double msecpertile = (double)timeaccum / (double)rendercnt / (double)activemaplist.size();
if(activemaplist.size() > 1)
sender.sendMessage(rendertype + " of maps [" + activemaps + "] of '" +
w.getName() + "' in progress - " + rendercnt + " tiles rendered each (" + String.format("%.2f", msecpertile) + " msec/map-tile).");
else
sender.sendMessage(rendertype + " of map '" + activemaps + "' of '" +
else
sender.sendMessage(rendertype + " of map '" + activemaps + "' of '" +
w.getName() + "' in progress - " + rendercnt + " tiles rendered (" + String.format("%.2f", msecpertile) + " msec/tile).");
}
}
}
}
/* And unload what we loaded */
cache.unloadChunks();
if(tile0 == null) { /* fullrender */
long tend = System.currentTimeMillis();
if(timeslice_int > (tend-tstart)) { /* We were fast enough */
scheduleDelayedJob(this, timeslice_int - (tend-tstart));
}
else { /* Schedule to run ASAP */
scheduleDelayedJob(this, 0);
}
}
else {
cleanup();
}
return true;
}
public void cancelRender() {
@ -422,6 +486,7 @@ public class MapManager {
hdmapman.loadHDPerspectives(plugin);
hdmapman.loadHDLightings(plugin);
sscache = new SnapshotCache(configuration.getInteger("snapshotcachesize", 500));
parallelrendercnt = configuration.getInteger("parallelrendercnt", 0);
this.tileQueue = new AsynchronousQueue<MapTile>(new Handler<MapTile>() {
@Override
@ -764,33 +829,37 @@ public class MapManager {
return c;
}
synchronized(loadlock) {
final MapChunkCache cc = c;
long now = System.currentTimeMillis();
if(cur_tick != (now/50)) { /* New tick? */
chunks_in_cur_tick = max_chunk_loads_per_tick;
cur_tick = now/50;
}
while(!cc.isDoneLoading()) {
final int cntin = chunks_in_cur_tick;
Future<Integer> f = scheduler.callSyncMethod(plug_in, new Callable<Integer>() {
public Integer call() throws Exception {
return Integer.valueOf(cntin - cc.loadChunks(cntin));
}
});
try {
chunks_in_cur_tick = f.get();
} catch (Exception ix) {
Log.severe(ix);
return null;
}
if(chunks_in_cur_tick == 0) {
chunks_in_cur_tick = max_chunk_loads_per_tick;
try { Thread.sleep(50); } catch (InterruptedException ix) {}
}
final MapChunkCache cc = c;
while(!cc.isDoneLoading()) {
synchronized(loadlock) {
long now = System.currentTimeMillis();
if(cur_tick != (now/50)) { /* New tick? */
chunks_in_cur_tick = max_chunk_loads_per_tick;
cur_tick = now/50;
}
}
Future<Boolean> f = scheduler.callSyncMethod(plug_in, new Callable<Boolean>() {
public Boolean call() throws Exception {
boolean exhausted;
synchronized(loadlock) {
if(chunks_in_cur_tick > 0)
chunks_in_cur_tick -= cc.loadChunks(chunks_in_cur_tick);
exhausted = (chunks_in_cur_tick == 0);
}
return exhausted;
}
});
boolean delay;
try {
delay = f.get();
} catch (Exception ix) {
Log.severe(ix);
return null;
}
if(delay)
try { Thread.sleep(50); } catch (InterruptedException ix) {}
}
return c;
}

5
src/main/resources/configuration.txt
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@ -158,6 +158,11 @@ timesliceinterval: 0.0
# Maximum chunk loads per server tick (1/20th of a second) - reducing this below 90 will impact render performance, but also will reduce server thread load
maxchunkspertick: 200
# EXPERIMENTAL - parallel fullrender: if defined, number of concurrent threads used for fullrender or radiusrender
# Note: setting this will result in much more intensive CPU use, some additional memory use. Caution should be used when
# setting this to equal or exceed the number of physical cores on the system.
#parallelrendercnt: 4
# Interval the browser should poll for updates.
updaterate: 2000