I’m encountering a serious issue with compiling my Kotlin project using Gradle. The problem occurs specifically during the compileKotlin task and seems to be related to memory management.
Configuration:
- JVM Arguments:
-Xmx16g -XX:MaxMetaspaceSize=1g -XX:+HeapDumpOnOutOfMemoryError -XX:+PrintGCDetails
Issue Description:
The compilation time fluctuates dramatically. With small code changes, the compilation process can take several minutes to hours and sometimes never completes. The build seems to hang indefinitely.
I suspect that extensive use of generics might be impacting the compiler’s performance, but I’m not sure if this is the root cause.
Example Debug Output:
2024-07-30T22:52:20.628-0400 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Releasing lock on daemon addresses registry.
2024-07-30T22:52:25.397-0400 [DEBUG] [org.gradle.process.internal.health.memory.DefaultMemoryManager] 1707250073 physical memory requested, 832716800 free
2024-07-30T22:52:25.397-0400 [DEBUG] [org.gradle.workers.internal.WorkerDaemonExpiration] Will attempt to release 1628 of memory
2024-07-30T22:52:25.397-0400 [DEBUG] [org.gradle.process.internal.health.memory.DefaultMemoryManager] 1707250073 physical memory requested, 0 released, 832716800 free
2024-07-30T22:52:30.396-0400 [DEBUG] [org.gradle.process.internal.health.memory.DefaultMemoryManager] 1707250073 physical memory requested, 827449344 free
2024-07-30T22:52:30.396-0400 [DEBUG] [org.gradle.workers.internal.WorkerDaemonExpiration] Will attempt to release 1628 of memory
2024-07-30T22:52:30.396-0400 [DEBUG] [org.gradle.process.internal.health.memory.DefaultMemoryManager] 1707250073 physical memory requested, 0 released, 827449344 free
...
Questions:
- Could the extensive use of generics in my code be causing these performance issues?
- Are there specific configurations or best practices for managing memory in Kotlin/Gradle builds to improve performance?
- How can I diagnose and resolve this problem effectively?
Any help or suggestions on resolving this issue would be greatly appreciated.
Additional Information:
- I have already tried increasing JVM memory settings.
- Gradle build cache and parallel builds are enabled.
- I’m using the latest stable versions of Gradle and Kotlin 1.9.21.
Thanks in advance for your assistance!