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01a13871de
Patch documentation to come Issues with the old system that are fixed now: - World generation does not scale with cpu cores effectively. - Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps. - Unreliable prioritisation of chunk gen/load calls that block the main thread. - Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved. - Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal. - Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles. The above list is not complete. The patch documentation will complete it. New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil. Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft. The old legacy chunk system patches have been moved to the removed folder in case we need them again.
42 lines
2.6 KiB
Diff
42 lines
2.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Fri, 2 Nov 2018 23:11:51 -0400
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Subject: [PATCH] Optimize World Time Updates
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Splits time updates into incremental updates as well as does
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the updates per world, so that we can re-use the same packet
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object for every player unless they have per-player time enabled.
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diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
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index 5e1a0ab40d9d03844c6e0b962bb15d3b4b40d229..44b70cef867093979e5481bee4d60676bdca6d47 100644
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--- a/src/main/java/net/minecraft/server/MinecraftServer.java
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+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
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@@ -1372,12 +1372,24 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
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MinecraftTimings.timeUpdateTimer.startTiming(); // Spigot // Paper
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// Send time updates to everyone, it will get the right time from the world the player is in.
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- if (this.tickCount % 20 == 0) {
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- for (int i = 0; i < this.getPlayerList().players.size(); ++i) {
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- ServerPlayer entityplayer = (ServerPlayer) this.getPlayerList().players.get(i);
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- entityplayer.connection.send(new ClientboundSetTimePacket(entityplayer.level.getGameTime(), entityplayer.getPlayerTime(), entityplayer.level.getGameRules().getBoolean(GameRules.RULE_DAYLIGHT))); // Add support for per player time
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+ // Paper start - optimize time updates
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+ for (final ServerLevel world : this.getAllLevels()) {
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+ final boolean doDaylight = world.getGameRules().getBoolean(GameRules.RULE_DAYLIGHT);
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+ final long dayTime = world.getDayTime();
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+ long worldTime = world.getGameTime();
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+ final ClientboundSetTimePacket worldPacket = new ClientboundSetTimePacket(worldTime, dayTime, doDaylight);
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+ for (Player entityhuman : world.players()) {
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+ if (!(entityhuman instanceof ServerPlayer) || (tickCount + entityhuman.getId()) % 20 != 0) {
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+ continue;
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+ }
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+ ServerPlayer entityplayer = (ServerPlayer) entityhuman;
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+ long playerTime = entityplayer.getPlayerTime();
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+ ClientboundSetTimePacket packet = (playerTime == dayTime) ? worldPacket :
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+ new ClientboundSetTimePacket(worldTime, playerTime, doDaylight);
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+ entityplayer.connection.send(packet); // Add support for per player time
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}
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}
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+ // Paper end
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MinecraftTimings.timeUpdateTimer.stopTiming(); // Spigot // Paper
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while (iterator.hasNext()) {
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