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Code Issues Projekte Releases Wiki Aktivität

Improve Watchdog Early Warning Feature - Closes #1319

Quellcode durchsuchen 
1) Don't kick in until server has started (the full crash will still kick in before full start)
2) Delay reporting until 10 seconds, then print every 5
3) Make the intervals configurable
4) Make it able to be disabled by setting every interval to <= 0
Dieser Commit ist enthalten in:
Aikar 2018-08-12 13:27:23 -04:00
Ursprung 3a70bed5f4
Commit 716ca620b1
Es konnte kein GPG-Schlüssel zu dieser Signatur gefunden werden
GPG-Schlüssel-ID: 401ADFC9891FAAFE
2 geänderte Dateien mit 151 neuen und 87 gelöschten Zeilen
Statistiken anzeigen Patch-Datei herunterladen Vergleichs-Datei herunterladen Alle Dateien ausklappen Alle Dateien einklappen

87
Spigot-Server-Patches/0332-Add-5-second-short-dumps-to-watchdog.patch
Datei anzeigen

@ -1,87 +0,0 @@
From 1981048ec72af6199d70617eebd09d24f9e06e94 Mon Sep 17 00:00:00 2001
From: miclebrick <miclebrick@outlook.com>
Date: Wed, 8 Aug 2018 15:30:52 -0400
Subject: [PATCH] Add 5 second short dumps to watchdog
diff --git a/src/main/java/org/spigotmc/WatchdogThread.java b/src/main/java/org/spigotmc/WatchdogThread.java
index 57a4748a30..815c3e6649 100644
--- a/src/main/java/org/spigotmc/WatchdogThread.java
+++ b/src/main/java/org/spigotmc/WatchdogThread.java
@@ -13,8 +13,10 @@ public class WatchdogThread extends Thread
private static WatchdogThread instance;
private final long timeoutTime;
+ private final long shortTimeout; // Paper - Timeout time for just printing a dump but not restarting
private final boolean restart;
private volatile long lastTick;
+ private long lastShortDump; // Paper - Keep track of short dump times to avoid spamming console with short dumps
private volatile boolean stopping;
private WatchdogThread(long timeoutTime, boolean restart)
@@ -22,6 +24,7 @@ public class WatchdogThread extends Thread
super( "Paper Watchdog Thread" );
this.timeoutTime = timeoutTime;
this.restart = restart;
+ shortTimeout = Math.min(5000, timeoutTime); // Paper - Make short timeout the lower of 5 seconds, and timeout time
}
public static void doStart(int timeoutTime, boolean restart)
@@ -52,9 +55,19 @@ public class WatchdogThread extends Thread
while ( !stopping )
{
//
- if ( lastTick != 0 && System.currentTimeMillis() > lastTick + timeoutTime && !Boolean.getBoolean("disable.watchdog")) // Paper - Add property to disable
+ long currentTime = System.currentTimeMillis(); // Paper - do we REALLY need to call this method multiple times?
+ if ( lastTick != 0 && currentTime > lastTick + shortTimeout && !Boolean.getBoolean("disable.watchdog") ) // Paper - Add property to disable and short timeout
{
+ // Paper start
+ boolean isLongTimeout = currentTime > lastTick + timeoutTime;
+ // Don't spam short dumps
+ if ( !isLongTimeout && currentTime < lastShortDump + shortTimeout ) continue;
+ lastShortDump = currentTime;
+ // Paper end
Logger log = Bukkit.getServer().getLogger();
+ // Paper start - Different message when it's a short timeout
+ if ( isLongTimeout )
+ {
log.log( Level.SEVERE, "The server has stopped responding!" );
log.log( Level.SEVERE, "Please report this to https://github.com/PaperMC/Paper/issues" );
log.log( Level.SEVERE, "Be sure to include ALL relevant console errors and Minecraft crash reports" );
@@ -79,11 +92,19 @@ public class WatchdogThread extends Thread
}
}
// Paper end
+ } else
+ {
+ log.log( Level.SEVERE, "The server has not responded for " + shortTimeout / 1000 + " seconds! Creating thread dump");
+ }
+ // Paper end - Different message for short timeout
log.log( Level.SEVERE, "------------------------------" );
log.log( Level.SEVERE, "Server thread dump (Look for plugins here before reporting to Paper!):" );
dumpThread( ManagementFactory.getThreadMXBean().getThreadInfo( MinecraftServer.getServer().primaryThread.getId(), Integer.MAX_VALUE ), log );
log.log( Level.SEVERE, "------------------------------" );
//
+ // Paper start - Only print full dump on long timeouts
+ if ( isLongTimeout )
+ {
log.log( Level.SEVERE, "Entire Thread Dump:" );
ThreadInfo[] threads = ManagementFactory.getThreadMXBean().dumpAllThreads( true, true );
for ( ThreadInfo thread : threads )
@@ -97,11 +118,12 @@ public class WatchdogThread extends Thread
RestartCommand.restart();
}
break;
+ } // Paper end
}
try
{
- sleep( 10000 );
+ sleep( 1000 ); // Paper - Reduce check time to every second instead of every ten seconds, more consistent and allows for short timeout
} catch ( InterruptedException ex )
{
interrupt();
--
2.18.0

151
Spigot-Server-Patches/0332-Add-Early-Warning-Feature-to-WatchDog.patch Normale Datei
Datei anzeigen

@ -0,0 +1,151 @@
From b232efe9bd3523537d680cca1176dc07cc4adc8c Mon Sep 17 00:00:00 2001
From: miclebrick <miclebrick@outlook.com>
Date: Wed, 8 Aug 2018 15:30:52 -0400
Subject: [PATCH] Add Early Warning Feature to WatchDog
Detect when the server has been hung for a long duration, and start printing
thread dumps at an interval until the point of crash.
This will help diagnose what was going on in that time before the crash.
diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
index 046bf33f66..8f12ad850b 100644
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
@@ -24,6 +24,8 @@ import org.bukkit.configuration.InvalidConfigurationException;
import org.bukkit.configuration.file.YamlConfiguration;
import co.aikar.timings.Timings;
import co.aikar.timings.TimingsManager;
+import org.spigotmc.SpigotConfig;
+import org.spigotmc.WatchdogThread;
public class PaperConfig {
@@ -341,4 +343,12 @@ public class PaperConfig {
}
tabSpamLimit = getInt("settings.spam-limiter.tab-spam-limit", tabSpamLimit);
}
+
+ public static int watchdogPrintEarlyWarningEvery = 5000;
+ public static int watchdogPrintEarlyWarningDelay = 10000;
+ private static void watchdogEarlyWarning() {
+ watchdogPrintEarlyWarningEvery = getInt("settings.watchdog.early-warning-every", 5000);
+ watchdogPrintEarlyWarningDelay = getInt("settings.watchdog.early-warning-delay", 10000);
+ WatchdogThread.doStart(SpigotConfig.timeoutTime, SpigotConfig.restartOnCrash );
+ }
}
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 74c97b5db6..da2e84c6b8 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -768,6 +768,7 @@ public abstract class MinecraftServer implements IAsyncTaskHandler, IMojangStati
this.a(this.n);
// Spigot start
+ org.spigotmc.WatchdogThread.hasStarted = true;
Arrays.fill( recentTps, 20 );
long start = System.nanoTime(), lastTick = start - TICK_TIME, catchupTime = 0, curTime, wait, tickSection = start; // Paper - Further improve server tick loop
while (this.isRunning) {
diff --git a/src/main/java/org/spigotmc/SpigotConfig.java b/src/main/java/org/spigotmc/SpigotConfig.java
index 4ac0ab9974..0c45d75adf 100644
--- a/src/main/java/org/spigotmc/SpigotConfig.java
+++ b/src/main/java/org/spigotmc/SpigotConfig.java
@@ -226,7 +226,7 @@ public class SpigotConfig
restartScript = getString( "settings.restart-script", restartScript );
restartMessage = transform( getString( "messages.restart", "Server is restarting" ) );
commands.put( "restart", new RestartCommand( "restart" ) );
- WatchdogThread.doStart( timeoutTime, restartOnCrash );
+ //WatchdogThread.doStart( timeoutTime, restartOnCrash ); // Paper - moved to PaperConfig
}
public static boolean bungee;
diff --git a/src/main/java/org/spigotmc/WatchdogThread.java b/src/main/java/org/spigotmc/WatchdogThread.java
index 57a4748a30..2aff1039ad 100644
--- a/src/main/java/org/spigotmc/WatchdogThread.java
+++ b/src/main/java/org/spigotmc/WatchdogThread.java
@@ -5,6 +5,7 @@ import java.lang.management.MonitorInfo;
import java.lang.management.ThreadInfo;
import java.util.logging.Level;
import java.util.logging.Logger;
+import com.destroystokyo.paper.PaperConfig;
import net.minecraft.server.MinecraftServer;
import org.bukkit.Bukkit;
@@ -13,6 +14,10 @@ public class WatchdogThread extends Thread
private static WatchdogThread instance;
private final long timeoutTime;
+ private final long earlyWarningEvery; // Paper - Timeout time for just printing a dump but not restarting
+ private final long earlyWarningDelay; // Paper
+ public static volatile boolean hasStarted; // Paper
+ private long lastEarlyWarning; // Paper - Keep track of short dump times to avoid spamming console with short dumps
private final boolean restart;
private volatile long lastTick;
private volatile boolean stopping;
@@ -22,6 +27,8 @@ public class WatchdogThread extends Thread
super( "Paper Watchdog Thread" );
this.timeoutTime = timeoutTime;
this.restart = restart;
+ earlyWarningEvery = Math.min(PaperConfig.watchdogPrintEarlyWarningEvery, timeoutTime); // Paper
+ earlyWarningDelay = Math.min(PaperConfig.watchdogPrintEarlyWarningDelay, timeoutTime); // Paper
}
public static void doStart(int timeoutTime, boolean restart)
@@ -52,9 +59,19 @@ public class WatchdogThread extends Thread
while ( !stopping )
{
//
- if ( lastTick != 0 && System.currentTimeMillis() > lastTick + timeoutTime && !Boolean.getBoolean("disable.watchdog")) // Paper - Add property to disable
+ long currentTime = System.currentTimeMillis(); // Paper - do we REALLY need to call this method multiple times?
+ if ( lastTick != 0 && currentTime > lastTick + earlyWarningEvery && !Boolean.getBoolean("disable.watchdog") ) // Paper - Add property to disable and short timeout
{
+ // Paper start
+ boolean isLongTimeout = currentTime > lastTick + timeoutTime;
+ // Don't spam short dumps
+ if ( !isLongTimeout && (earlyWarningEvery <= 0 || !hasStarted || currentTime < lastEarlyWarning + earlyWarningEvery || currentTime < lastTick + earlyWarningDelay)) continue;
+ lastEarlyWarning = currentTime;
+ // Paper end
Logger log = Bukkit.getServer().getLogger();
+ // Paper start - Different message when it's a short timeout
+ if ( isLongTimeout )
+ {
log.log( Level.SEVERE, "The server has stopped responding!" );
log.log( Level.SEVERE, "Please report this to https://github.com/PaperMC/Paper/issues" );
log.log( Level.SEVERE, "Be sure to include ALL relevant console errors and Minecraft crash reports" );
@@ -79,11 +96,19 @@ public class WatchdogThread extends Thread
}
}
// Paper end
+ } else
+ {
+ log.log( Level.SEVERE, "The server has not responded for " + earlyWarningEvery / 1000 + " seconds! Creating thread dump");
+ }
+ // Paper end - Different message for short timeout
log.log( Level.SEVERE, "------------------------------" );
log.log( Level.SEVERE, "Server thread dump (Look for plugins here before reporting to Paper!):" );
dumpThread( ManagementFactory.getThreadMXBean().getThreadInfo( MinecraftServer.getServer().primaryThread.getId(), Integer.MAX_VALUE ), log );
log.log( Level.SEVERE, "------------------------------" );
//
+ // Paper start - Only print full dump on long timeouts
+ if ( isLongTimeout )
+ {
log.log( Level.SEVERE, "Entire Thread Dump:" );
ThreadInfo[] threads = ManagementFactory.getThreadMXBean().dumpAllThreads( true, true );
for ( ThreadInfo thread : threads )
@@ -97,11 +122,12 @@ public class WatchdogThread extends Thread
RestartCommand.restart();
}
break;
+ } // Paper end
}
try
{
- sleep( 10000 );
+ sleep( 1000 ); // Paper - Reduce check time to every second instead of every ten seconds, more consistent and allows for short timeout
} catch ( InterruptedException ex )
{
interrupt();
--
2.18.0