我为我的Java应用程序运行./gradlew proguard --debug来检查为什么它没有在几个小时内完成，这就是我所看到的：
17:14:11.431 [INFO] [system.out] Optimizing...
17:14:13.537 [DEBUG] [org.gradle.process.internal.health.memory.MemoryManager] Emitting OS memory status event {Total: 8589934592, Free: 2029916160}
17:14:13.538 [DEBUG] [org.gradle.launcher.daemon.server.health.LowMemoryDaemonExpirationStrategy] Received memory status update: {Total: 8589934592, Free: 2029916160}
17:14:13.538 [DEBUG] [org.gradle.process.internal.health.memory.MemoryManager] Emitting JVM memory status event {Maximum: 954728448, Committed: 580386816}
17:14:18.535 [DEBUG] [org.gradle.process.internal.health.memory.MemoryManager] Emitting OS memory status event {Total: 8589934592, Free: 2014097408}
17:14:18.535 [DEBUG] [org.gradle.launcher.daemon.server.health.LowMemoryDaemonExpirationStrategy] Received memory status update: {Total: 8589934592, Free: 2014097408}
17:14:18.535 [DEBUG] [org.gradle.process.internal.health.memory.MemoryManager] Emitting JVM memory status event {Maximum: 954728448, Committed: 578289664}
17:14:20.726 [DEBUG] [org.gradle.launcher.daemon.server.Daemon] DaemonExpirationPeriodicCheck running
17:14:20.727 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Waiting to acquire shared lock on daemon addresses registry.
17:14:20.727 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Lock acquired on daemon addresses registry.
17:14:20.727 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Releasing lock on daemon addresses registry.
17:14:20.727 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Waiting to acquire shared lock on daemon addresses registry.
17:14:20.727 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Lock acquired on daemon addresses registry.
17:14:20.728 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Releasing lock on daemon addresses registry.
17:14:23.538 [DEBUG] [org.gradle.process.internal.health.memory.MemoryManager] Emitting OS memory status event {Total: 8589934592, Free: 1980108800}
17:14:23.538 [DEBUG] [org.gradle.launcher.daemon.server.health.LowMemoryDaemonExpirationStrategy] Received memory status update: {Total: 8589934592, Free: 1980108800}
17:14:23.538 [DEBUG] [org.gradle.process.internal.health.memory.MemoryManager] Emitting JVM memory status event {Maximum: 954728448, Committed: 534773760}
17:14:28.536 [DEBUG] [org.gradle.process.internal.health.memory.MemoryManager] Emitting OS memory status event {Total: 8589934592, Free: 2000781312}
17:14:28.536 [DEBUG] [org.gradle.launcher.daemon.server.health.LowMemoryDaemonExpirationStrategy] Received memory status update: {Total: 8589934592, Free: 2000781312}
17:14:28.537 [DEBUG] [org.gradle.process.internal.health.memory.MemoryManager] Emitting JVM memory status event {Maximum: 954728448, Committed: 575668224}
17:14:30.725 [DEBUG] [org.gradle.launcher.daemon.server.Daemon] DaemonExpirationPeriodicCheck running
17:14:30.725 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Waiting to acquire shared lock on daemon addresses registry.
17:14:30.725 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Lock acquired on daemon addresses registry.
17:14:30.726 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Releasing lock on daemon addresses registry.
17:14:30.726 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Waiting to acquire shared lock on daemon addresses registry.
17:14:30.726 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Lock acquired on daemon addresses registry.
17:14:30.726 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Releasing lock on daemon addresses registry.
17:14:33.535 [DEBUG] [org.gradle.process.internal.health.memory.MemoryManager] Emitting OS memory status event {Total: 8589934592, Free: 1986662400}
17:14:33.536 [DEBUG] [org.gradle.launcher.daemon.server.health.LowMemoryDaemonExpirationStrategy] Received memory status update: {Total: 8589934592, Free: 1986662400}
17:14:33.536 [DEBUG] [org.gradle.process.internal.health.memory.MemoryManager] Emitting JVM memory status event {Maximum: 954728448, Committed: 570425344}
17:14:38.539 [DEBUG] [org.gradle.process.internal.health.memory.MemoryManager] Emitting OS memory status event {Total: 8589934592, Free: 1962721280}
17:14:38.539 [DEBUG] [org.gradle.launcher.daemon.server.health.LowMemoryDaemonExpirationStrategy] Received memory status update: {Total: 8589934592, Free: 1962721280}
17:14:38.539 [DEBUG] [org.gradle.process.internal.health.memory.MemoryManager] Emitting JVM memory status event {Maximum: 954728448, Committed: 571473920}
我认为这些错误可能是原因，因为它们每秒都会被打印出来。我尝试在gradle.properties中设置它，但没有改变：
GRADLE_OPTS = "-Xmx2048m -XX:MaxPermSize=2048m"
要配置Gradle JVM内存，您需要在gradle.properties中设置org.gradle.jvmargs，如Build Environment / Configuring JVM memory中所述
文档中的示例：
org.gradle.jvmargs=-Xmx2g -XX:MaxMetaspaceSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
GRADLE_OPTS不适合你，因为：
GRADLE_OPTS是一个环境变量而不是gradle.property配置，因此放入gradle.properties时它没有任何效果。它需要在启动Gradle之前设置。例如，像这样：
export GRADLE_OPTS="some opts here"
gradle build
GRADLE_OPTS仅配置Gradle客户端，但您的构建很可能在Gradle Daemon中运行。有关详细信息，请参阅Build Environment / Environment variables。