Highly Optimized Tick Loop

By: md_5 <git@md-5.net>

paper-server/src/main/java/org/spigotmc/TicksPerSecondCommand.java

@@ -0,0 +1,45 @@
+package org.spigotmc;
+
+import net.minecraft.server.MinecraftServer;
+import org.bukkit.ChatColor;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+
+public class TicksPerSecondCommand extends Command
+{
+
+    public TicksPerSecondCommand(String name)
+    {
+        super( name );
+        this.description = "Gets the current ticks per second for the server";
+        this.usageMessage = "/tps";
+        this.setPermission( "bukkit.command.tps" );
+    }
+
+    @Override
+    public boolean execute(CommandSender sender, String currentAlias, String[] args)
+    {
+        if ( !this.testPermission( sender ) )
+        {
+            return true;
+        }
+
+        StringBuilder sb = new StringBuilder( ChatColor.GOLD + "TPS from last 1m, 5m, 15m: " );
+        for ( double tps : MinecraftServer.getServer().recentTps )
+        {
+            sb.append( this.format( tps ) );
+            sb.append( ", " );
+        }
+        sender.sendMessage( sb.substring( 0, sb.length() - 2 ) );
+        sender.sendMessage(ChatColor.GOLD + "Current Memory Usage: " + ChatColor.GREEN + ((Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory()) / (1024 * 1024)) + "/" + (Runtime.getRuntime().totalMemory() / (1024 * 1024)) + " mb (Max: "
+                + (Runtime.getRuntime().maxMemory() / (1024 * 1024)) + " mb)");
+
+        return true;
+    }
+
+    private String format(double tps)
+    {
+        return ( ( tps > 18.0 ) ? ChatColor.GREEN : ( tps > 16.0 ) ? ChatColor.YELLOW : ChatColor.RED ).toString()
+                + ( ( tps > 20.0 ) ? "*" : "" ) + Math.min( Math.round( tps * 100.0 ) / 100.0, 20.0 );
+    }
+}