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Java memory optimizations: 3x Jenkins performance improvement with Dynatrace

Dynatrace

Dynatrace also alerted on intermittent outages throughout the day and especially after 8pm when the bulk of the nightly jobs were executed: On March 31st our Jenkins violated our SLAs from both availability and user experience. But let’s start from the beginning: Step #1 – Switching to Java 11.

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Bending pause times to your will with Generational ZGC

The Netflix TechBlog

If you’re interested in how we use Java at Netflix, Paul Bakker’s talk How Netflix Really Uses Java , is a great place to start. More than half of our critical streaming video services are now running on JDK 21 with Generational ZGC, so it’s a good time to talk about our experience and the benefits we’ve seen.

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Top 20 Websites For Online Automation Testing Courses and Certifications

Testsigma

Certifications, typically, are proof of the enhanced prowess in the stream for which the course has been taken. Certifications and Courses help validate as well as enhance our technical capability in a specific vertical. A lot of these tools also need a fair amount of time to be invested in learning courses and doing certifications.

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Extend infrastructure observability with JMX Extensions and additional full-stack metrics

Dynatrace

To provide you with more value when monitoring hosts in infrastructure mode, we’re extending our infrastructure mode with a range of metrics that have until now only been available in full-stack mode. Monitor any infrastructure component and backing service that’s written in Java. Enabling JMX and PMI extensions.

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The Return of the Frame Pointers

Brendan Gregg

This technique saves two instructions in the prologue and epilogue and makes one additional general-purpose register (%rbp) available." 2014: Java in Flames Broken Java Stacks (2014) When I joined Netflix in 2014, I found Java's lack of frame pointer support broke all application stacks (pictured in my 2014 Surge talk on the right).

Java 145
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Tricks with Direct Memory Access in Java

Highly Scalable

Java was initially designed as a safe, managed environment. Nevertheless, Java HotSpot VM contains a “backdoor” that provides a number of low-level operations to manipulate memory and threads directly. In general, such functionality is safely available via NIO’s off-heap bufferes. sizeof() Function.

Java 101
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Announcing enterprise-grade observability at scale for your OpenTelemetry custom metrics

Dynatrace

Our new OpenTelemetry custom metric exporters provide the broadest language support on the market, covering Go ,NET , Java , JavaScript/Node.js , and Python. If you already have Dynatrace OneAgent in place, you can of course take advantage of the built-in OneAgent multidimensional metric API for ingestion of your OpenTelemetry custom metrics.

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