210a32f26f
Due to some complexity in mojangs complicated chain of juggling whether or not a chunk should be unloaded when the last ticket is removed, many chunks are remaining around in the cache. These chunks are never being targetted for unload because they are vastly out of view distance range and have no reason to be looked at. This is a huge issue for performance because we have to iterate these chunks EVERY TICK... This is what's been leading to high SELF time in Ticking Chunks timings/profiler results. We will now detect these chunks in that iteration, and automatically add it to the unload queue when the chunk is found without any tickets.
62 lines
4.3 KiB
Diff
62 lines
4.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <spottedleaf@spottedleaf.dev>
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Date: Mon, 27 Apr 2020 00:04:16 -0700
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Subject: [PATCH] Reduce allocation of Vec3D by entity tracker
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diff --git a/src/main/java/net/minecraft/server/EntityTrackerEntry.java b/src/main/java/net/minecraft/server/EntityTrackerEntry.java
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index 6d3b34ead9cc95dcc1152dffa8c6c4a8c7f1d58b..5cc89c0cf9e9e632212a9653391437cbe9b15031 100644
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--- a/src/main/java/net/minecraft/server/EntityTrackerEntry.java
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+++ b/src/main/java/net/minecraft/server/EntityTrackerEntry.java
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@@ -125,8 +125,12 @@ public class EntityTrackerEntry {
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++this.o;
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i = MathHelper.d(this.tracker.yaw * 256.0F / 360.0F);
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j = MathHelper.d(this.tracker.pitch * 256.0F / 360.0F);
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- Vec3D vec3d = this.tracker.getPositionVector().d(PacketPlayOutEntity.a(this.xLoc, this.yLoc, this.zLoc));
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- boolean flag1 = vec3d.g() >= 7.62939453125E-6D;
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+ // Paper start - reduce allocation of Vec3D here
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+ double vec3d_dx = this.tracker.locX() - 2.44140625E-4D*(this.xLoc);
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+ double vec3d_dy = this.tracker.locY() - 2.44140625E-4D*(this.yLoc);
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+ double vec3d_dz = this.tracker.locZ() - 2.44140625E-4D*(this.zLoc);
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+ boolean flag1 = (vec3d_dx * vec3d_dx + vec3d_dy * vec3d_dy + vec3d_dz * vec3d_dz) >= 7.62939453125E-6D;
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+ // Paper end - reduce allocation of Vec3D here
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Packet<?> packet1 = null;
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boolean flag2 = flag1 || this.tickCounter % 60 == 0;
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boolean flag3 = Math.abs(i - this.yRot) >= 1 || Math.abs(j - this.xRot) >= 1;
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@@ -143,9 +147,11 @@ public class EntityTrackerEntry {
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// CraftBukkit end
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if (this.tickCounter > 0 || this.tracker instanceof EntityArrow) {
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- long k = PacketPlayOutEntity.a(vec3d.x);
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- long l = PacketPlayOutEntity.a(vec3d.y);
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- long i1 = PacketPlayOutEntity.a(vec3d.z);
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+ // Paper start - remove allocation of Vec3D here
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+ long k = PacketPlayOutEntity.a(vec3d_dx);
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+ long l = PacketPlayOutEntity.a(vec3d_dy);
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+ long i1 = PacketPlayOutEntity.a(vec3d_dz);
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+ // Paper end - remove allocation of Vec3D here
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boolean flag4 = k < -32768L || k > 32767L || l < -32768L || l > 32767L || i1 < -32768L || i1 > 32767L;
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if (!flag4 && this.o <= 400 && !this.q && this.r == this.tracker.onGround) {
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diff --git a/src/main/java/net/minecraft/server/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java
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index 1c3526dda5c20264e21d079fd1aff1a735a9e496..2dd7999b6a540efd1e2e974f33ed87a6d0a8e8f1 100644
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--- a/src/main/java/net/minecraft/server/PlayerChunkMap.java
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+++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java
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@@ -2132,9 +2132,14 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
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public void updatePlayer(EntityPlayer entityplayer) {
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org.spigotmc.AsyncCatcher.catchOp("player tracker update"); // Spigot
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if (entityplayer != this.tracker) {
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- Vec3D vec3d = entityplayer.getPositionVector().d(this.tracker.getPositionVector()); // MC-155077, SPIGOT-5113
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+ // Paper start - remove allocation of Vec3D here
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+ //Vec3D vec3d = entityplayer.getPositionVector().d(this.tracker.getPositionVector()); // MC-155077, SPIGOT-5113
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+ double vec3d_dx = entityplayer.locX() - this.tracker.locX();
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+ double vec3d_dy = entityplayer.locY() - this.tracker.locY();
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+ double vec3d_dz = entityplayer.locZ() - this.tracker.locZ();
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+ // Paper end - remove allocation of Vec3D here
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int i = Math.min(this.b(), (PlayerChunkMap.this.viewDistance - 1) * 16);
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- boolean flag = vec3d.x >= (double) (-i) && vec3d.x <= (double) i && vec3d.z >= (double) (-i) && vec3d.z <= (double) i && this.tracker.a(entityplayer);
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+ boolean flag = vec3d_dx >= (double) (-i) && vec3d_dx <= (double) i && vec3d_dz >= (double) (-i) && vec3d_dz <= (double) i && this.tracker.a(entityplayer); // Paper - remove allocation of Vec3D here
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if (flag) {
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boolean flag1 = this.tracker.attachedToPlayer;
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