Java heap dumps and thread dumps are a powerful way to investigate what's going on in the Java Virtual Machine (JVM). A heap dump allows you to see what is kept in memory after a minor and major garbage collection. Therefore, heap dumps provide indis...
In part 1 of this series we talked about Java memory management and how it is different in containers. In part 2 we will focus on different out of memory errors that may occur with Java apps in containerized environments and how to mitigate them.
Out...
Container technologies in the area of cloud computing are steady on the rise. They allow for great new cloud (platform) architectures, but they can be challenging for even experienced developers. Those challenges are not always visible at first, this...
Hi Lekhak,
depending on the size of the JVM there should be enough on the disk for at least one heap dump. Can you please check that the app is entitled to use 4G of disk size and verify via ssh if there's already any other heap dump that was create...
Hi Wei,
I guess it'd be worth to check cf events APP_NAME to see if there are some more details on the events that were logged with exist status 137 and 143 during that time.
Hi gaurish,
Thanks for your feedback.
If you already have heap dump you can use the Memory Analysis Tool from Eclipse as mentioned at the end of the blog.
Starting with Java 11 you Application Performance Monitoring tools like Dynatrace can also p...
Dear Yogesh,thank you for your comment. Have you verified that the app crash is indeed a JVM out of memory error and not a container out of memory error? The heap histogram is only written for JVM out of memory errors and should show up in your logs,...
Hi Rama,
thanks a lot for your valuable feedback. I have updated the blog and added a link to the JDK tool requirements to make sure that all prerequisites are mentioned in this blog.
Thanks,
Tim
