Performance Costs of Synchronized Methods in Java: JDK Mission Control & JVM Flight Recorder Example (Cameron McKenzie/Mission Control).Keeping Netflix Reliable Using Prioritized Load Shedding (Manuel Correa, Arthur Gonigberg, and Daniel West/Netflix).JFR continuous production profiling and diagnostics Articles.AWS OpenTelemetry Instrumentation for Java.DataDog always-on Continuous Profiler Tools.New Relic (open source) Java JFR-based profiler.In the world of thousands to millions of virtual threads, object sizes and limitations become more apparent.Now on to all the usual newsletter list of links, tips, tools, news and articles below, and as usual I've extracted all the tips into this month's tips page. But regardless, having the option available is pretty exciting news! And of course there's always edge cases that will cause longer GCs, all of which means you'll need to test if it's right for you. Of course you don't get low pause for nothing, like all concurrent GC algorithms the lower the pause you want the more other CPU and memory you need to make available to the JVM, so this may or may not be the best choice for your application. That means that stop-the-world pauses will all be under 1 millisecond for all GCs! Now one exciting piece of news from Roman Kennke (the Shenandoah project lead), mentioned near the end of a recent JVM Roundabout meetup means that Shenandoah may become the GC of choice for low pause applications: From JDK 17 (the next full long term support - LTS - release, coming in September this year) Shenandoah will be completely concurrent except for some constant time admin operations. I haven't really specifically covered Red Hat's Shenandoah garbage collector in any newsletter, though I do include it in all the garbage collectors available with the full recommendations I make for garbage collectors (see my easy to follow guides, covered in my GC focused newsletter) The classic and most comprehensive book on tuning Java We can provide training courses to handle all your Java performance needs Get rid of your performance problems and memory leaks!ĬOURSES AVAILABLE NOW. Training online: Concurrency, Threading, GC, Advanced Java and more. JProfiler: Get rid of your performance problems and memory leaks! Our valued sponsors who help make this site possible News January 2021 Java Performance Tuning
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