diff --git a/src/pocketmine/Server.php b/src/pocketmine/Server.php
index e2c037ac0..57fccd1b2 100644
--- a/src/pocketmine/Server.php
+++ b/src/pocketmine/Server.php
@@ -1561,6 +1561,8 @@ class Server{
 				$this->logger->warning($this->getName() . " may not work right with less than 128MB of memory");
 			}
 			@ini_set("memory_limit", $memory);
+			$this->logger->notice("The memory limit will only affect the main thread, and it's unreliable.");
+			$this->logger->notice("To control the memory usage, reduce the amount of threads and chunks loaded");
 		}
 
 		if($this->getConfigBoolean("hardcore", false) === true and $this->getDifficulty() < 3){
@@ -1855,6 +1857,8 @@ class Server{
 				$this->logger->warning($this->getName() . " may not work right with less than 256MB of memory", true, true, 0);
 			}
 			@ini_set("memory_limit", $memory);
+			$this->logger->notice("The memory limit will only affect the main thread, and it's unreliable.");
+			$this->logger->notice("To control the memory usage, reduce the amount of threads and chunks loaded");
 		}
 
 		if($this->getConfigBoolean("hardcore", false) === true and $this->getDifficulty() < 3){
@@ -2192,14 +2196,8 @@ class Server{
 			return;
 		}
 		
-		$usage = $this->getMemoryUsage();
-		if($usage === null){
-			$usage = round((memory_get_usage() / 1024) / 1024, 2) .
-			"/" . round((memory_get_usage(true) / 1024) / 1024, 2) .
-			" MB @ " . $this->getThreadCount() . " threads";
-		}else{
-			$usage = round(($usage / 1024) / 1024, 2) . " MB @ " . $this->getThreadCount() . " threads";
-		}
+		$u = $this->getMemoryUsage(true);
+		$usage = round(($u[0] / 1024) / 1024, 2) . "/".round(($u[1] / 1024) / 1024, 2)." MB @ " . $this->getThreadCount() . " threads";
 
 		echo "\x1b]0;" . $this->getName() . " " .
 			$this->getPocketMineVersion() .
@@ -2213,34 +2211,31 @@ class Server{
 	
 	public function getMemoryUsage($advanced = false){
 		$VmSize = null;
-		$VmHWM = null;
+		$VmRSS = null;
 		if(Utils::getOS() === "linux" or Utils::getOS() === "bsd"){
 			$status = file_get_contents("/proc/self/status");
-			if(preg_match("/VmHWM:[ \t]+([0-9]+) kB/", $status, $matches) > 0){
-				$VmHWM = $matches[1] * 1024;
+			if(preg_match("/VmRSS:[ \t]+([0-9]+) kB/", $status, $matches) > 0){
+				$VmRSS = $matches[1] * 1024;
 			}
 
-			if(preg_match("/VmData:[ \t]+([0-9]+) kB/", $status, $matches) > 0){
-				$VmData = $matches[1] * 1024;
+			if(preg_match("/VmSize:[ \t]+([0-9]+) kB/", $status, $matches) > 0){
+				$VmSize = $matches[1] * 1024;
 			}
 		}
 
-		if($VmHWM === null){
-			$VmHWM = memory_get_usage();
+		if($VmRSS === null){
+			$VmRSS = memory_get_usage();
 		}
 
 		if(!$advanced){
-			return $VmHWM;
+			return $VmRSS;
 		}
 
 		if($VmSize === null){
 			$VmSize = memory_get_usage(true);
 		}
 
-		return [
-			"hardware" => $VmHWM,
-			"virtual" => $VmSize,
-		];
+		return [$VmRSS, $VmSize];
 	}
 	
 	public function getThreadCount(){
diff --git a/src/pocketmine/utils/Binary.php b/src/pocketmine/utils/Binary.php
index d0528c04d..5c129df4d 100644
--- a/src/pocketmine/utils/Binary.php
+++ b/src/pocketmine/utils/Binary.php
@@ -25,10 +25,6 @@
 namespace pocketmine\utils;
 use pocketmine\entity\Entity;
 
-/**
- * WARNING: This class is available on the PocketMine-MP Zephir project.
- * If this class is modified, remember to modify the PHP C extension.
- */
 class Binary{
 	const BIG_ENDIAN = 0x00;
 	const LITTLE_ENDIAN = 0x01;
diff --git a/src/pocketmine/utils/MainLogger.php b/src/pocketmine/utils/MainLogger.php
index 8b44ab432..10c505241 100644
--- a/src/pocketmine/utils/MainLogger.php
+++ b/src/pocketmine/utils/MainLogger.php
@@ -47,7 +47,7 @@ class MainLogger extends \AttachableThreadedLogger{
 		$this->logFile = $logFile;
 		$this->logDebug = (bool) $logDebug;
 		$this->logStream = "";
-		$this->start(PTHREADS_INHERIT_NONE);
+		$this->start();
 	}
 
 	/**
@@ -190,7 +190,11 @@ class MainLogger extends \AttachableThreadedLogger{
 			$this->attachment->call($level, $message);
 		}
 
-		$this->logStream .= date("Y-m-d", $now) . " " . $cleanMessage;
+		$str = date("Y-m-d", $now) . " " . $cleanMessage . "\n";
+		$this->synchronized(function($str){
+			$this->logStream .= $str;
+			$this->notify();
+		}, $str);
 	}
 
 	public function run(){
@@ -201,15 +205,15 @@ class MainLogger extends \AttachableThreadedLogger{
 		}
 
 		while($this->shutdown === false){
-			if(strlen($this->logStream) > 0){
-				$this->lock();
-				$chunk = $this->logStream;
-				$this->logStream = "";
-				$this->unlock();
-				fwrite($this->logResource, $chunk);
-			}else{
-				usleep(250000);
-			}
+			$this->synchronized(function(){
+				if(strlen($this->logStream) > 0){
+					$chunk = $this->logStream;
+					$this->logStream = "";
+					fwrite($this->logResource, $chunk);
+				}else{
+					$this->wait(250000);
+				}
+			});
 		}
 
 		if(strlen($this->logStream) > 0){
diff --git a/src/pocketmine/utils/Random.php b/src/pocketmine/utils/Random.php
index fe2b0cf8c..c62e8b3e4 100644
--- a/src/pocketmine/utils/Random.php
+++ b/src/pocketmine/utils/Random.php
@@ -24,8 +24,6 @@ namespace pocketmine\utils;
 
 /**
  * Unsecure Random Number Noise, used for fast seeded values
- * WARNING: This class is available on the PocketMine-MP Zephir project.
- * If this class is modified, remember to modify the PHP C extension.
  */
 class Random{
 
diff --git a/src/pocketmine/utils/TextFormat.php b/src/pocketmine/utils/TextFormat.php
index 014ca9d68..00c3d9520 100644
--- a/src/pocketmine/utils/TextFormat.php
+++ b/src/pocketmine/utils/TextFormat.php
@@ -70,9 +70,9 @@ abstract class TextFormat{
 	 */
 	public static function clean($string, $removeFormat = true){
 		if($removeFormat){
-			return preg_replace(["/§[0123456789abcdefklmnor]/", "/\x1b\\[[0-9;]+m/"], "", $string);
+			return preg_replace(["/§[0123456789abcdefklmnor]/", "/\x1b[\\(\\][[0-9;\\[\\(]+[Bm]/"], "", $string);
 		}
-		return preg_replace("/\x1b\\[[0-9;]+m/", "", $string);
+		return preg_replace("/\x1b[\\(\\][[0-9;\\[\\(]+[Bm]/", "", $string);
 	}
 
 	/**
diff --git a/src/raklib b/src/raklib
index 7c0888f4a..639108fb3 160000
--- a/src/raklib
+++ b/src/raklib
@@ -1 +1 @@
-Subproject commit 7c0888f4ad51c4eb9b695c38691b16aa08522493
+Subproject commit 639108fb3aeb48a113df3b31516af6ac4f5ba402
diff --git a/src/spl b/src/spl
index 695451daf..5ad5b3535 160000
--- a/src/spl
+++ b/src/spl
@@ -1 +1 @@
-Subproject commit 695451daf403d86e9db11e6119a6c9cef7f85463
+Subproject commit 5ad5b3535c9519b2e013a61a2d55fccae014e037