56 lines
2.8 KiB
Diff
56 lines
2.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Spottedleaf <spottedleaf@spottedleaf.dev>
|
|
Date: Tue, 22 Sep 2020 01:49:19 -0700
|
|
Subject: [PATCH] Optimise non-flush packet sending
|
|
|
|
Places like entity tracking make heavy use of packet sending,
|
|
and internally netty will use some very expensive thread wakeup
|
|
calls when scheduling.
|
|
|
|
Thanks to various hacks in ProtocolLib as well as other
|
|
plugins, we cannot simply use a queue of packets to group
|
|
send on execute. We have to call execute for each packet.
|
|
|
|
Tux's suggestion here is exactly what was needed - tag
|
|
the Runnable indicating it should not make a wakeup call.
|
|
|
|
Big thanks to Tux for making this possible as I had given
|
|
up on this optimisation before he came along.
|
|
|
|
Locally this patch drops the entity tracker tick by a full 1.5x.
|
|
|
|
diff --git a/src/main/java/net/minecraft/network/Connection.java b/src/main/java/net/minecraft/network/Connection.java
|
|
index 241b086bd096a4bc2175835b2505deda1c143f09..a1aafb037fd340dc93dd2afb758ffc7457d15f84 100644
|
|
--- a/src/main/java/net/minecraft/network/Connection.java
|
|
+++ b/src/main/java/net/minecraft/network/Connection.java
|
|
@@ -49,6 +49,8 @@ import org.apache.logging.log4j.Logger;
|
|
import org.apache.logging.log4j.Marker;
|
|
import org.apache.logging.log4j.MarkerManager;
|
|
|
|
+
|
|
+import io.netty.util.concurrent.AbstractEventExecutor; // Paper
|
|
public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
|
|
|
|
private static final float AVERAGE_PACKETS_SMOOTHING = 0.75F;
|
|
@@ -387,9 +389,19 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
|
|
if (this.channel.eventLoop().inEventLoop()) {
|
|
this.doSendPacket(packet, callback, enumprotocol, enumprotocol1, flush); // Paper - add flush parameter
|
|
} else {
|
|
+ // Paper start - optimise packets that are not flushed
|
|
+ // note: since the type is not dynamic here, we need to actually copy the old executor code
|
|
+ // into two branches. On conflict, just re-copy - no changes were made inside the executor code.
|
|
+ if (!flush) {
|
|
+ AbstractEventExecutor.LazyRunnable run = () -> {
|
|
+ this.doSendPacket(packet, callback, enumprotocol, enumprotocol1, flush); // Paper - add flush parameter
|
|
+ };
|
|
+ this.channel.eventLoop().execute(run);
|
|
+ } else { // Paper end - optimise packets that are not flushed
|
|
this.channel.eventLoop().execute(() -> {
|
|
- this.doSendPacket(packet, callback, enumprotocol, enumprotocol1, flush); // Paper - add flush parameter
|
|
+ this.doSendPacket(packet, callback, enumprotocol, enumprotocol1, flush); // Paper - add flush parameter // Paper - diff on change
|
|
});
|
|
+ } // Paper
|
|
}
|
|
|
|
}
|