GitHub - uber-common/jvm-profiler: JVM Profiler Sending Metrics to Kafka, Console Output or Custom Reporter
Uber JVM Profiler provides a Java Agent to collect various metrics and stacktraces for Hadoop/Spark JVM processes in a distributed way, for example, CPU/Memory/IO metrics. Uber JVM Profiler also provides advanced profiling capabilities to trace arbitrary Java methods and arguments on the user code without user code change requirement. This feature could be used to trace HDFS name node call latency
JVMアプリケーションをé‹ç”¨ã™ã‚‹éš›ã®ãƒ¡ã‚¸ãƒ£ãƒ¼ã©ã“ã‚ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ãƒã‚¤ãƒ³ãƒˆãƒ¡ãƒ¢ - yoskhdia’s diary
JVMã«ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°é …ç›®ã¯å¤šã€…ã‚ã‚Œã©ã€ãƒ—ãƒãƒ€ã‚¯ã‚·ãƒ§ãƒ³ã§é‹ç”¨ã™ã‚‹éš›ã«äºˆã‚ãŠã•ãˆã¦ãŠããŸã„é …ç›®ã‚’ã¾ã¨ã‚ã¦ã¿ã‚‹ã‚¨ãƒ³ãƒˆãƒªã§ã™ã€‚*1 å‹¿è«–ã€OSã‚‚JVMもデフォルトã§ã‚る程度ã®ãƒ‘フォーマンスã¯ç™ºæ®ã§ãã€è¨ˆæ¸¬ã‚’ä¼´ã‚ãªã„ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã¯æ‚ªæ‰‹ã§ã‚ã‚‹ã“ã¨ã¯ã‚ˆã知られã¦ã„ã¾ã™ã€‚ ã—ã‹ã—ã€è¨å®šã—ã¦ãŠã‹ãªã„ã¨ãƒ‘フォーマンスã«ãã®ã¾ã¾å½±éŸ¿ã™ã‚‹ã¨åˆ†ã‹ã‚‹ã‚‚ã®ã‚’調ã¹ãªã„ã®ã¯è£¸ã§æˆ¦å ´ã«èµ´ãよã†ãªã‚‚ã®ã§ã™ã€‚*2 ã©ã‚“ãªé …目をã©ã†å¤‰æ›´ã™ã‚Œã°è‰¯ã„ã®ã‹çŸ¥ã£ã¦ã„ã‚‹ã“ã¨ã¯é‡è¦ãªæ¦å™¨ãªã®ã§ã™ã€‚ ãªãœèª¿ã¹ã‚‹ã®ã‹ 今回ã€ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ãƒã‚¤ãƒ³ãƒˆã‚’調ã¹ã‚‹ã«ã‚ãŸã£ã¦ã€ç§ã®ãƒ¢ãƒãƒ™ãƒ¼ã‚·ãƒ§ãƒ³ã¯ã©ã“ã«ã‚ã‚‹ã®ã‹ã‚’考ãˆã‚‹ã¨ã€ä»¥ä¸‹ã®è¦ä»¶ã‚’満ãŸã—ãŸã„ã¨ã„ã†ã“ã¨ãŒã‚ã’られã¾ã™ã€‚ アプリケーションã¨ã—ã¦æ±‚ã‚られるå“質水準ã¨ã—ã¦å‹•ä½œã™ã‚‹ → 性能目標 異常時ã«äº‹è±¡ã‚’追ã†ã“ã¨ãŒã§ãã‚‹ ã“ã“ã§ã„ã†å“質水準・異常ã¨ã¯ã€ãƒ‘フォーマンスãŒæ˜Žã‚‰ã‹ã«ä½Žã„ã€ã‚¢ãƒ—リケーションãŒã‚¯ãƒ©ãƒƒã‚·ãƒ¥ã™
Micrometer Application Observability
Vendor-neutral application observability facadeMicrometer provides a facade for the most popular observability systems, allowing you to instrument your JVM-based application code without vendor lock-in. Think SLF4J, but for observability. Integrated into FrameworksPopular frameworks that integrate with Micrometer include Helidon, Micronaut, Quarkus, and Spring. You can use the idioms and configura
Frink
What's New * FAQ * Download * Frink Applet * Web Interface * Sample Programs * Frink Server Pages * Frink on Android * Donate About Frink Frink is a practical calculating tool and programming language designed to make physical calculations simple, to help ensure that answers come out right, and to make a tool that's really useful in the real world. It tracks units of measure (feet, meters, kilogra
JVM Deep Dive
Daniel Mitterdorfer, comSysto GmbH @dmitterd Behold! It will get scary. Topics Illusions by (J)VMs Interpreter JIT Compiler Memory Illusions Based on A JVM Does That??? Write Once, Run Anywhere One "Binary" for All Platforms Consistent Memory Model (Java Memory Model) Consistent Thread Model Bytecodes Are Fast (JITing) Infinite Heap (Garbage Collection) What "is" a JVM? The JVM is specified in The
Comprehensive Overview of Storage Scalability in Docker
Try Red Hat products and technologies without setup or configuration fees for 30 days with this shared Openshift and Kubernetes cluster.
Hawtio - A modular web console for managing your Java stuff
Modular architectureHawtio is a pluggable Web management console, built with the modern Web technologies such as React and PatternFly. The pluggable architecture is based on Webpack Module Federation and highly extensible; you can dynamically extend Hawtio with your own plugins or automatically discover plugins inside the JVM. PluginsHawtio has built-in plugins already to make it highly useful out
Whiley
WhileyCreating high integrity software at scale.Get Started!! function max(int x, int y) -> (int r) // Ensure return not smaller than parameters ensures (r >= x) && (r >= y) // Ensure a parameter returned ensures (r == x) || (r == y): if x >= y: return x else: return y ReliabilityWhiley employs state-of-the-art techniques for ensuring your software is correct. You can specify functions using preco
String Deduplication - A new feature in Java 8 Update 20
Strings consume a lot of memory in any application. Especially the char[] containing the individual UTF-16 characters is contributing to most of the memory consumption of a JVM by each character eating up two bytes. It is not uncommon to find 30% of the memory consumed by Strings, because not only are Strings the best format to interact with humans, but also popular HTTP APIs use lots of Strings.
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