Articles

Interesting Application Garbage Collection Patterns

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As the author of GCeasy – Garbage collection logs analysis tool, I get to see a few interesting Garbage Collection Patterns again and again. Based on the Garbage collection pattern, you can detect the health and performance characteristics of the application instantly. In this post, let me share a few interesting Garbage collection patterns that have intrigued me.

1. Healthy Saw-tooth Pattern
Fig 1: Healthy saw-tooth GC pattern

You will see a beautiful saw-tooth GC pattern when an application is healthy, as shown in the above graph. Heap usage will keep rising; once a ‘Full GC’ event is triggered, heap usage will drop all the way to the bottom. 

Source de l’article sur DZONE

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What is ‘Load Average?’

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Load average is an age-old metric, which is in existence since the 1970s to indicate whether the system is under heavy/average/low load. It is useful to indicate whether the system’s load is on an increasing trend or a decreasing trend. In this article, let’s learn more about ‘Load Average.’

How to Understand ‘Load Average?’

In most cases, ‘Load Average’ is reported as an average of 1 minute, 5 minutes, and 15 minutes. Please refer to the below screenshot:

Source de l’article sur DZONE

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