Java Garbage Collection Algorithm Design Choices And Metrics To Evaluate Garbage Collector Performance - DZone Java

Java Garbage Collection Algorithm Design Choices And Metrics To Evaluate Garbage Collector Performance - DZone Java

Performance Metrics

Several metrics are utilized to evaluate garbage collector performance, including:

• Throughput—the percentage of total time not spent in garbage collection, considered over long periods of time.
• Garbage collection overhead—the inverse of throughput, that is, the percentage of total time spent in garbage collection.
• Pause time—the length of time during which application execution is stopped while garbage collection is occurring.
• Frequency of collection—how often collection occurs, relative to application execution.
• Footprint—a measure of size, such as heap size.
• Promptness—the time between when an object becomes garbage and when the memory becomes available.

If you'd like to explore more on this and in general about Java's garbage collection / memory management, have a look at these slides:

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