Hi Scott, We're running Resin 4.0.5 for a heavy traffic site (100K+ Pageviews in an hour) for a couple of months.
In the past several days I've experienced frequent failing responding of requests after two or three hours a Resin instance was started. The environment: Hardware: 16 cores with 24GB ram OS: Centos 5.5 64bit Java Version: Oracle JRockit(R) (build R28.0.0-679-130297-1.6.0_17-20100312-2121-linux-x86_64, compiled mode) Database: Mysql 5.1.47 64bit (on another Centos 5.5 box with 8 cores and 12GB ram) The situation: * Java process running the resin CPU utilization: raised from the usual 60%~150% to 200%~300% (16Cores) * Threads in resin server: raised from usual 200~800 to 1500~3000 * Resin Centos box load average: no notable change * Database CPU utilization: dropped from the usual 50%~200% to below 10% (8Cores) * DB box IO utilization: drop from the usual 3%~5% to below 1% * DB box load average: no notable change * Most browser requests were blocked, no result, no error. I have to restart it after it hanged. I did jvm flight recordings of the jrockit JVM before restart for several times. The jfr record file show that, in most of the time, the threads were blocked in class InjectManager public static InjectManager getCurrent(ClassLoader loader) { synchronized (_localContainer) { return _localContainer.get(loader); } } I noticed in the 4.0.9 source, it changed to public static InjectManager getCurrent(ClassLoader loader) { return _localContainer.get(loader); } Probably this problem has bean resolved but I need to do more test in next week. Thanks for the great work. -Wesley
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