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Red Hat 㧠Java Platform Advocate ã¨ã㦠OpenJDK ãæ å½ãã¦ããä¼è¤ã¡ã²ãï¼@chiroitoï¼ã§ãã ãã®è¨äºã¯ãRed Hat Developerã®ããã°è¨äºãJava monitoring for custom targets with Cryostat | Red Hat Developer ã®ç¿»è¨³è¨äºã§ãã ããã©ã«ãã§ã¯ãCryostatã¯ãªã¢ã¼ãJava Management Extensions (JMX)ã¨JMX-RMIãæå¹ãªæ¥ç¶æ§ãæã¤ãçºè¦å¯è½ã§æå¹ãªã¿ã¼ã²ãããèªåçã«èªèãã¾ããçºè¦æ©è½ã¯ãKubernetes APIãã¼ã¹ã®ãµã¼ãã¹ã¨ã³ããã¤ã³ããJava Discovery Protocol (JDP)ãªã©ããã¾ãã¾ãªã¡ã«ããºã ã«åºã¥ãã¦ãã¾ãã Cryostat 2.0ã§ã¯ãéçºè ã¯ãæå¹ã ãã¾ã çºè¦ããã¦ããªãæ¢ç¥
Red Hat 㧠Java Platform Advocate ã¨ã㦠OpenJDK ãæ å½ãã¦ããä¼è¤ã¡ã²ãï¼@chiroitoï¼ã§ãã ãã®è¨äºã¯ãRed Hat Developerã®ããã°è¨äºãAnnouncing Cryostat 2.0: JDK Flight Recorder for containers | Red Hat Developer ã®ç¿»è¨³è¨äºã§ãã Cryostat ã¯ãJDK Flight Recorder (JFR) ã使ç¨ãã¦ã³ã³ããã®ãããã¡ã¤ãªã³ã°ã¨ç£è¦ãè¡ãããã®å®å ¨ãª API ãæä¾ãããã³ã³ãããã¤ãã£ã㪠JVM ã¢ããªã±ã¼ã·ã§ã³ã§ããJDK Flight Recorderã¯ããã¤ããªã®ãã©ã¤ãã¬ã³ã¼ãã£ã³ã°ã«ä¿åãããJFRã¤ãã³ãã使ç¨ãã¦ãã¢ããªã±ã¼ã·ã§ã³ãããããã¡ã¤ãªã³ã°ã¨è¨ºæãã¼ã¿ãåéãã¾ããCryostatã¯ãè¦æ±ã«å¿ãã¦ãã³
ã¯ããã« JFRã«ããããã¤ãã³ãã ã¤ãã³ãã¿ã¤ãã¨ãµã³ããªã³ã° ãã¼ã¿ãã©ã¼ããã 循ç°ãããã¡ã¨ãã¼ã¿ããã¼ ãªãã¸ããªã¨JFRãã¡ã¤ã«å JFRã®éå§ã¨JFRãã¡ã¤ã«ãã³ã ã¾ã¨ã åè ã¯ããã« JDK Flight Recorder(JFR)ã¯Javaã§å©ç¨ã§ãã常ææ¬çªé©ç¨å¯è½ãªè¶ ä½ãªã¼ãã¼ãããã®ãããã¡ã¤ã©ã§ããæ§è½åæã¨ãé害対å¿ã®å¼·ãå³æ¹ã§ããï¼ ä»ã¾ã§åç¨ã©ã¤ã»ã³ã¹ã®ã¿ä½¿ç¨å¯è½ã ã£ãã®ã§ãããJDK11ããOpenJDKã«åãè¾¼ã¾ãèªç±ã«ä½¿ããããã«ãªãã¾ããããªã¼ãã³ã«ãªã£ãã®ã§è²ã èªåã§ã使ãããã§ãããè²ããªäººã«ã使ã£ã¦æ¬²ãããªã¨æã£ã¦ãã¾ãã ãã ãOracleã®å ¬å¼ããã¥ã¡ã³ããä½ãã«ããµã©ãªã¨ãéãã¦ãã¦è¯ãããããªãã®ã§ãããã¤ãã®Oracleãæå¿ã®çºè¡¨è³æãèªåã®ç¥èãå ã«ã¢ã¼ããã¯ãã£æ¦è¦ã解説ãã¦è¦ã¾ããã ãã®è¾ºããã£ããåãããããæ¸ããå ¬
Summary Provide a low-overhead data collection framework for troubleshooting Java applications and the HotSpot JVM. Goals Provide APIs for producing and consuming data as events Provide a buffer mechanism and a binary data format Allow the configuration and filtering of events Provide events for the OS, the HotSpot JVM, and the JDK libraries Non-Goals Provide visualization or analysis of collected
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