Dynatrace

NOVEMBER 6, 2023

With topics ranging from best practices to cloud cost management and success stories, the conference will be a valuable resource for understanding observability and getting started. In Grabner’s example, he understood that there was an increased Java error rate on the front end of the application.

Development 270

Development DevOps Programming Cloud 270

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. There's no Java stack—there should be a tower of green Java methods—instead there's only a single green frame or two. This is how Java flame graphs looked at the time. 30.14% in the middle of the flame graph.

Speed 126

Speed Java AWS Virtualization 126

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. There's no Java stack—there should be a tower of green Java methods—instead there's only a single green frame or two. This is how Java flame graphs looked at the time. This will slow this test a little.)

Speed 52

Speed Java AWS Virtualization 52

The Netflix TechBlog

FEBRUARY 9, 2021

As we migrated to EdgePaaS, front-end services were moved from the Java-based API to a BFF (backend for frontend), aka NodeQuark, as shown: This model enables front-end engineers to own and operate their services outside of the core API framework. The following examples of these gains are from the primary API service.

Architecture 221

Architecture Latency Servers Website 221

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. There's no Java stack—there should be a tower of green Java methods—instead there's only a single green frame or two. This is how Java flame graphs looked at the time. 30.14% in the middle of the flame graph.

Speed 40

Speed Java AWS Virtualization 40

The Morning Paper

SEPTEMBER 5, 2019

For response times (latencies) reporting a simple metric such as ‘average’ is next to useless. Instead we want to understand what’s happening at different latency percentiles (e.g A characteristic of latency distributions is that they have a long tail. Why do we need a new sketch?

Latency 52

Latency Metrics Open Source Java 52

Brendan Gregg

MAY 16, 2017

Getting frame pointer support in Java was another project I did a while ago. The reactive work can be for any performance problem that shows up, involving runtimes (Java, Node.js), Linux (and sometimes FreeBSD), or hypervisors (Xen, containers). Java core dump analysis for a crashing JVM. -

Java 75

Java Entertainment Engineering Scalability 75