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Introduce 10 KB threshold for async compression

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due to the extremely large performance cost of instantiating AsyncTasks, it's usually not worth bothering with async compression except for very large packets.
While this large overhead can be significantly reduced by using specialized threads, it's early days in the testing stages for such improvements, and for now, we still have this to deal with.

Since async compression is always used prior to player spawn, this change may slightly improve the performance of the pre-join stage of the game.
This commit is contained in:
Dylan K. Taylor
2023-05-16 22:54:06 +01:00
parent 9499e2e595
commit 599c4284f5
2 changed files with 12 additions and 2 deletions
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9
src/Server.php
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@ -208,6 +208,8 @@ class Server{
private const TICKS_PER_TPS_OVERLOAD_WARNING = 5 * self::TARGET_TICKS_PER_SECOND;
private const TICKS_PER_STATS_REPORT = 300 * self::TARGET_TICKS_PER_SECOND;
private const DEFAULT_ASYNC_COMPRESSION_THRESHOLD = 10_000;
private static ?Server $instance = null;
private TimeTrackingSleeperHandler $tickSleeper;
@ -266,6 +268,7 @@ class Server{
private Network $network;
private bool $networkCompressionAsync = true;
private int $networkCompressionAsyncThreshold = self::DEFAULT_ASYNC_COMPRESSION_THRESHOLD;
private Language $language;
private bool $forceLanguage = false;
@ -908,6 +911,10 @@ class Server{
ZlibCompressor::setInstance(new ZlibCompressor($netCompressionLevel, $netCompressionThreshold, ZlibCompressor::DEFAULT_MAX_DECOMPRESSION_SIZE));
$this->networkCompressionAsync = $this->configGroup->getPropertyBool("network.async-compression", true);
$this->networkCompressionAsyncThreshold = max(
$this->configGroup->getPropertyInt("network.async-compression-threshold", self::DEFAULT_ASYNC_COMPRESSION_THRESHOLD),
$netCompressionThreshold ?? self::DEFAULT_ASYNC_COMPRESSION_THRESHOLD
);
EncryptionContext::$ENABLED = $this->configGroup->getPropertyBool("network.enable-encryption", true);
@ -1375,7 +1382,7 @@ class Server{
}
$promise = new CompressBatchPromise();
if(!$sync){
if(!$sync && strlen($buffer) >= $this->networkCompressionAsyncThreshold){
$task = new CompressBatchTask($buffer, $promise, $compressor);
$this->asyncPool->submitTask($task);
}else{