GC suspension heap old gen spike

shahrukh_niazi — Fri, 17 Dec 2021 08:24:56 GMT

Is there an easy way to trigger a heap dump when an alert condition is breached in ONEAgent Dynatrace?.

We randomly see spikes in heap used old gen, gc suspension spikes in our docker container. Heap is set to 9Gb. Many APIs are being used in the container. Sometimes OOM conditions happens fast, docker instance crashes and immediately start a new one.

The only reliable way to see what is growing inside the heap is to take a heap dump. But by the time any memory dump can be manually Tigger, new docker instance is started

Can i trigger a heap dump *automatically* on say when heap grows >65% via api, how?

Re: GC suspension heap old gen spike

ChadTurner — Wed, 30 Mar 2022 15:49:47 GMT

You can trigger Memory Dumps but you will need an AG to support this. https://www.dynatrace.com/support/help/how-to-use-dynatrace/diagnostics/memory-dump-analysis/configure-an-activegate-for-memory-dump-storage

topic Re: GC suspension heap old gen spike in Container platforms

GC suspension heap old gen spike

Re: GC suspension heap old gen spike