Overhead added by collecting thread dumps

A thread dump is a snapshot of all the threads running in a java process. It’s a vital artifact to troubleshoot various production problems such as CPU spikes, unresponsiveness in the application, poor response time, hung threads, high memory consumption. Thus to facilitate troubleshooting, we have seen enterprises capture thread dumps on a periodic basis (every 5 minute or 2 minute).So we were curious to learn the overhead of capturing thread dump on a periodic basis. Thus we set out to conduct the below case study.

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“I don’t have to worry about Garbage collection” – Is it true?

I have heard a few of my developer friends say: “Garbage Collection is automatic. So, I do not have to worry about it.“ The first part is true, i.e., “Garbage Collection is automatic” on all modern platforms – Java, .NET, Golang, Python… But the second part i.e., “I don’t have to worry about it.” – may not be true. It is arguable, questionable. Here is my case to showcase the importance of Garbage Collection:

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How many millions of dollars enterprises waste due to Garbage collection?

We truly believe enterprises are wasting millions of dollars in garbage collection. We equally believe enterprises are wasting these many millions of dollars even without knowing they are wasting. Intent of this post is to bring visibility on how several millions of dollars are wasted due to garbage collection.

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