The best way to check the GC status of the Web Application Server (WAS) in operation is to use thejstatcommand. I have explained the jstat command inHow To Monitor Java Garbage Collection, so I will describe the data to check in this article. The following example shows a JVM for which...
If this type of OOM is thrown, you might need to use troubleshooting utilities on your operating system to diagnose the issue further. In some cases, the problem might not even be related to the application. For example, you might see this error if: The operating system is configured with ...
A retail chain can use this tool to predict demand for individual items for each day of the following week. Forecasting and validation The tool builds two models while forecasting each time series. The first is the forecast model, which is used to forecast the values of future time ...
If you like a nice way to do this from the command line use jstat: http://java.sun.com/j2se/1.5.0/docs/tooldocs/share/jstat.html It gives raw information at configurable intervals which is very useful for logging and graphing purposes. Share Improve this answer Follow answered Jun 29, ...
A retail chain can use this tool to predict demand for individual items for each day of the following week. Forecasting and validation The tool builds two models while forecasting each time series. The first is the forecast model, which is used to forecast the values of future time s...
For Java 8 you can use the following command line to get the heap space utilization in kB: jstat -gc <PID> | tail -n 1 | awk '{split($0,a," "); sum=a[3]+a[4]+a[6]+a[8]; print sum}' The command basically sums up: S0U: Survivor space 0 utilization (kB). S...
jstat.exeOpenJDK Platform binaryOpenJDK Platform 13 (13.0.2)20008C:\Windows\System32\winevt\Logs\ jinfo.exeOpenJDK Platform binaryOpenJDK Platform 13 (13.0.2)20520C:\Windows\System32\winevt\Logs\ kinit.exeOpenJDK Platform binaryOpenJDK Platform 13 (13.0.2)20008C:\Windows\System32\ ...
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Computer-assisted instruction (CAI) is a valuable approach for managing classroom heterogeneity by providing feedback tailored to students’ individual needs. While previous research has primarily focused on the cognitive mechanisms underlying CAI’s effectiveness, it has often overlooked the social-cognitiv...
Another tool,jstat, can collect garbage collection statistics for the JVM over a period of time much like vmstat when run with a numeric argument (e.g.vmstat 3). Finally, it is possible to use a Java Agent to push instrumentation on all methods of all objects at load-time. The library...