![]() With that covered, we are ready to move on to the reasons you may need If you are not ready yet to move onto Java 12, Shenandoah is also backported to JDK only since version 12 and is available in AdoptOpenJDK 12 How do you get Shenandoah? This garbage collector has officially become part of Throughput (the application as a whole, not only the GC phase, is slower with Shenandoah GC pays the price for being concurrent with reduced application.In return, Shenandoah is not penalized in workloads that do not benefit from Most live objects every GC cycle (something that generational GCs can avoid). Shenandoah GC is also not generational.The length of those STW pauses doesn't increase much with the size of It performs the bulk of the GC work concurrently while the application is Shenandoah GC also produces STW pauses, but it keeps them very short because.That are expected to be more efficient for that particular generation. Then for each generation, they apply different garbage collection strategies Several generations based on how many GC cycles the object has survived, and Many modern GCs (e.g., G1) are also generational - they group objects into.This stop-the-world pause can lastįor up to tens of seconds and increases linearly with the size of the heap. Objects, and then resuming the application. Classic GCs (also called STW for Stop-The-World) work by stopping allĪpplication threads whenever there is no free memory left, removing all.GCs if you don't feel like diving into more informative sources right now: ![]() Only available in Russian, but the slides are in English.Īnyway, here's a short list of statements about Shenandoah and other concurrent
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