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[Performance] Attempt to use Netty's Epoll implementation on Linux.

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This will attempt to make use of Netty's EpollEventLoopGroup and Epoll(Server)SocketChannel when on Linux and the native libraries load correctly. It should bring a large increase in performance and hopefully reliability. Big thanks to the @netty team for implementing this and @normanmaurer for some tips on the support detection.

Feedback is appreciated.
This commit is contained in:
md_5 2014-06-25 18:14:50 +10:00
parent 2b304ecebc
commit 500b0af782
7 changed files with 68 additions and 14 deletions
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2
pom.xml
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@ -64,7 +64,7 @@
<properties>
<build.number>unknown</build.number>
<netty.version>4.0.19.Final</netty.version>
<netty.version>4.0.20.Final</netty.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>

6
proxy/pom.xml
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@ -29,6 +29,12 @@
<version>${netty.version}</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-transport-native-epoll</artifactId>
<version>${netty.version}</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>jline</groupId>
<artifactId>jline</artifactId>

11
proxy/src/main/java/net/md_5/bungee/BungeeCord.java
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@ -21,9 +21,7 @@ import io.netty.channel.Channel;
import io.netty.channel.ChannelException;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.MultithreadEventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.channel.EventLoopGroup;
import io.netty.util.ResourceLeakDetector;
import net.md_5.bungee.conf.Configuration;
import java.io.File;
@ -33,7 +31,6 @@ import java.net.InetSocketAddress;
import java.text.MessageFormat;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Locale;
import java.util.Map;
@ -97,7 +94,7 @@ public class BungeeCord extends ProxyServer
* Localization bundle.
*/
public ResourceBundle bundle;
public MultithreadEventLoopGroup eventLoops;
public EventLoopGroup eventLoops;
/**
* locations.yml save thread.
*/
@ -206,7 +203,7 @@ public class BungeeCord extends ProxyServer
System.setProperty( "io.netty.selectorAutoRebuildThreshold", "0" ); // Seems to cause Bungee to stop accepting connections
ResourceLeakDetector.setEnabled( false ); // Eats performance
eventLoops = new NioEventLoopGroup( 0, new ThreadFactoryBuilder().setNameFormat( "Netty IO Thread #%1$d" ).build() );
eventLoops = PipelineUtils.newEventLoopGroup(0, new ThreadFactoryBuilder().setNameFormat( "Netty IO Thread #%1$d" ).build() );
File moduleDirectory = new File( "modules" );
moduleManager.load( this, moduleDirectory );
@ -259,7 +256,7 @@ public class BungeeCord extends ProxyServer
}
};
new ServerBootstrap()
.channel( NioServerSocketChannel.class )
.channel( PipelineUtils.getServerChannel() )
.childAttr( PipelineUtils.LISTENER, info )
.childHandler( PipelineUtils.SERVER_CHILD )
.group( eventLoops )

3
proxy/src/main/java/net/md_5/bungee/BungeeServerInfo.java
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@ -5,7 +5,6 @@ import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelOption;
import io.netty.channel.socket.nio.NioSocketChannel;
import java.net.InetSocketAddress;
import java.util.ArrayList;
import java.util.Collection;
@ -131,7 +130,7 @@ public class BungeeServerInfo implements ServerInfo
}
};
new Bootstrap()
.channel( NioSocketChannel.class )
.channel( PipelineUtils.getChannel() )
.group( BungeeCord.getInstance().eventLoops )
.handler( PipelineUtils.BASE )
.option( ChannelOption.CONNECT_TIMEOUT_MILLIS, 5000 ) // TODO: Configurable

3
proxy/src/main/java/net/md_5/bungee/UserConnection.java
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@ -7,7 +7,6 @@ import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.util.internal.PlatformDependent;
import java.net.InetSocketAddress;
import java.util.Collection;
@ -261,7 +260,7 @@ public final class UserConnection implements ProxiedPlayer
}
};
Bootstrap b = new Bootstrap()
.channel( NioSocketChannel.class )
.channel( PipelineUtils.getChannel() )
.group( ch.getHandle().eventLoop() )
.handler( initializer )
.option( ChannelOption.CONNECT_TIMEOUT_MILLIS, 5000 ) // TODO: Configurable

4
proxy/src/main/java/net/md_5/bungee/http/HttpClient.java
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@ -8,7 +8,6 @@ import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoop;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.codec.http.DefaultHttpRequest;
import io.netty.handler.codec.http.HttpHeaders;
import io.netty.handler.codec.http.HttpMethod;
@ -21,6 +20,7 @@ import java.util.concurrent.TimeUnit;
import lombok.AccessLevel;
import lombok.NoArgsConstructor;
import net.md_5.bungee.api.Callback;
import net.md_5.bungee.netty.PipelineUtils;
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public class HttpClient
@ -90,7 +90,7 @@ public class HttpClient
}
};
new Bootstrap().channel( NioSocketChannel.class ).group( eventLoop ).handler( new HttpInitializer( callback, ssl ) ).
new Bootstrap().channel( PipelineUtils.getChannel() ).group( eventLoop ).handler( new HttpInitializer( callback, ssl ) ).
option( ChannelOption.CONNECT_TIMEOUT_MILLIS, TIMEOUT ).remoteAddress( inetHost, port ).connect().addListener( future );
}
}

53
proxy/src/main/java/net/md_5/bungee/netty/PipelineUtils.java
View File

@ -5,13 +5,25 @@ import io.netty.channel.Channel;
import io.netty.channel.ChannelException;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.ServerChannel;
import io.netty.channel.epoll.EpollEventLoopGroup;
import io.netty.channel.epoll.EpollServerSocketChannel;
import io.netty.channel.epoll.EpollSocketChannel;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.timeout.ReadTimeoutHandler;
import io.netty.util.AttributeKey;
import io.netty.util.internal.PlatformDependent;
import java.net.InetSocketAddress;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import net.md_5.bungee.BungeeCord;
import net.md_5.bungee.BungeeServerInfo;
import net.md_5.bungee.UserConnection;
import net.md_5.bungee.Util;
import net.md_5.bungee.connection.InitialHandler;
import net.md_5.bungee.api.ProxyServer;
import net.md_5.bungee.api.config.ListenerInfo;
@ -62,6 +74,47 @@ public class PipelineUtils
public static String LEGACY_DECODER = "legacy-decoder";
public static String LEGACY_KICKER = "legacy-kick";
private static boolean epoll;
static
{
if ( !PlatformDependent.isWindows() )
{
ProxyServer.getInstance().getLogger().info( "Not on Windows, attempting to use enhanced EpollEventLoop" );
EpollEventLoopGroup testGroup = null;
try
{
testGroup = new EpollEventLoopGroup( 1 );
epoll = true;
ProxyServer.getInstance().getLogger().info( "Epoll is working, utilising it!" );
} catch ( Throwable t )
{
ProxyServer.getInstance().getLogger().log( Level.WARNING, "Event though Epoll should be supported, it is not working, falling back to NIO: {0}", Util.exception( t ) );
} finally
{
if ( testGroup != null )
{
testGroup.shutdownGracefully();
}
}
}
}
public static EventLoopGroup newEventLoopGroup(int threads, ThreadFactory factory)
{
return epoll ? new EpollEventLoopGroup( threads, factory ) : new NioEventLoopGroup( threads, factory );
}
public static Class<? extends ServerChannel> getServerChannel()
{
return epoll ? EpollServerSocketChannel.class : NioServerSocketChannel.class;
}
public static Class<? extends Channel> getChannel()
{
return epoll ? EpollSocketChannel.class : NioSocketChannel.class;
}
public final static class Base extends ChannelInitializer<Channel>
{