Detect proactively whether application’s memory is under-allocated

When the application’s memory is under-allocated, it will result in the following side-effects:

a. Transactions response time will degrade

b. CPU consumption will spike up

c. OutOfMemoryError will be thrown

Only when OutOfMemoryError is thrown, most of us start to look at our application’s memory settings. This is like only when a patient goes to a critical condition; we begin to give treatment :-).

In this post, let’s discuss how to detect whether your application’s memory is under-allocated or not in a proactive manner.

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October 15, 2021 0

Interesting Garbage Collection Patterns

As the author of GCeasy – Garbage collection log analysis tool, I get to see few interesting Garbage Collection Patterns again & 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 few interesting Garbage collection patterns that have intrigued me.

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October 15, 2021 0

AWS Cloud watch vs yCrash – Monitoring vs RCA

We had an outage in our online application GCeasy on Monday morning (PST) Oct’ 11, 2021. When customers uploaded their Garbage Collection logs for analysis, the application was returning HTTP 504 error. HTTP 504 status code indicates that transactions are timing out. In this post, we would like to document our journey to identify the root cause of the problem.

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October 13, 2021 0

Performance impact of java.lang.System.getProperty()

‘java.lang.System.getProperty()’ is a common API used by Java developers to read the System properties that are configured during application startup time. i.e. when you pass “-DappName=buggyApp” as your application’s startup JVM argument, the value of the ‘appName’ system property can be read by invoking the ‘java.lang.System.getProperty()’. Example:

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October 6, 2021 7

Is today’s microservice more bloated than yesterday’s monolith?

I am slightly hesitant to write this post, as it might attract some criticism. Nevertheless, I told myself there is nothing wrong with sharing my point of view (even though it might not be well accepted). I would like to share my personal experience regarding yesterday’s Monolithic and today’s Microservice architecture in this post.

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August 20, 2021 0

Java performance Talk in QAInsights Clubhouse

Naveen Kumar Namachivayam from QAInsights Invited Ram Lakshmanan – The architect of yCrash to talk in the Performance Engineers Clubhouse. In this video, the basics of Garbage collection, Importance of Memory, GC Throughput Introduction and many other topics have been discussed!

August 6, 2021 0

OutOfMemoryError: Kill process or sacrifice child – causes & solutions

There are different flavors of OutOfMemoryError. One of the flavours of OutOfMemoryError is ‘Kill Process or sacrifice child’. This post discusses what triggers this ‘Kill Process or sacrifice child’ OutOfMemoryError and potential solutions to diagnose this problem.

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July 27, 2021 0

ping – Unix/Linux command, beginners introduction with examples

‘ping’ command is used to troubleshoot and diagnose network connectivity issues. It is used to check whether the host is reachable. It’s available on all the Operating Systems. ‘ping’ reports the round-trip time for the messages sent from the source to the destination.

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June 28, 2021 1

dmesg – Unix/Linux command, beginners introduction with examples

‘dmesg’ (display message) is not a popular Unix/Linux command. However, it provides vital information that can be used for troubleshooting production performance problems.

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June 28, 2021 0

“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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June 24, 2021 0