2014, Java and Systems - Technology Performance Pulse

The Return of the Frame Pointers

Brendan Gregg

MARCH 16, 2024

The problem is that this system has a default libc that has been compiled without frame pointers, so any stack walking stops at the libc layer, producing a partial stack that's missing the application frames. Java, for example, has the -XX:+PreserveFramePointer option. Just to name a couple of languages.

Java

Java Cache Google Hardware

Netflix End of Series 1

Brendan Gregg

APRIL 14, 2022

offer letter logo (2014). flame graphs (2014). eBPF tools (2014-2019). I joined Netflix in 2014, a company at the forefront of cloud computing with an attractive [work culture]. Netflix has been the best job of my career so far, and I'll miss my colleagues and the culture. PMC analysis (2017). More on that soon.

Java

Java Cloud Cache AWS

The Speed of Time

Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. This is how Java flame graphs looked at the time.

Speed

Speed Java AWS Virtualization

Netflix End of Series 1

Brendan Gregg

APRIL 14, 2022

offer letter logo (2014) flame graphs (2014) eBPF tools (2014-2019) PMC analysis (2017) my pandemic-abandoned desk (2020); office wall I joined Netflix in 2014, a company at the forefront of cloud computing with an attractive work culture. It was the most challenging job among those I interviewed for. Thank you.

Java

Java Cache Cloud AWS

The Speed of Time

Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. This is how Java flame graphs looked at the time.

Speed

Speed Java AWS Virtualization

A look behind the scenes of AWS Lambda and our new Lambda monitoring extension

Dynatrace

FEBRUARY 25, 2021

Since its introduction by AWS in 2014, AWS Lambda has revolutionized the compute space and boosted the entire serverless movement. This has led to the recent release of our new Lambda monitoring extension supporting Node.js, Java, and Python. Dynatrace news. Dynatrace has offered a Lambda code module for Node.js

Lambda

Lambda AWS Monitoring Serverless

The Speed of Time

Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. This is how Java flame graphs looked at the time.

Speed

Speed Java AWS Virtualization

Analyzing a High Rate of Paging

Brendan Gregg

AUGUST 29, 2021

1072-aws (xxx) 12/18/2018 _x86_64_ (16 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 5.03 avg-cpu: %user %nice %system %iowait %steal %idle 14.81 avg-cpu: %user %nice %system %iowait %steal %idle 14.86 avg-cpu: %user %nice %system %iowait %steal %idle 14.95 avg-cpu: %user %nice %system %iowait %steal %idle 14.54

Cache

Cache C++ AWS Latency

C++ safety, in context

Sutter's Mill

MARCH 11, 2024

We must make our software infrastructure more secure against the rise in cyberattacks (such as on power grids, hospitals, and banks), and safer against accidental failures with the increased use of software in life-critical systems (such as autonomous vehicles and autonomous weapons).

C++

C++ Programming Code Java

Coloring Flame Graphs: Code Hues

Brendan Gregg

JULY 30, 2017

In late 2014 I was modifying the JDK to preserve the frame pointer so that traditional stack walkers and profilers would work (an example of the problem is here , where Java methods lack ancestry). After I fixed the frame pointer, profiling Java looked like this ( SVG ): It worked! Sometimes the profiled Java symbols use "."

Code

Code Java C++ Website

MariaDB vs MySQL: Key Differences and Use Cases

Percona

JUNE 4, 2023

Before we dive into the differences between MariaDB and MySQL, we will provide a thorough examination of each relational database management system (RDBMS). While originally designed to be a drop-in replacement for MySQL, it evolved into its own distinct database management system and is now maintained and supported by the MariaDB Foundation.

Open Source

Open Source Servers Storage Scalability

Advent Calendars For Web Designers And Developers (December 2021 Edition)

Smashing Magazine

DECEMBER 2, 2021

The Java Advent 2021 is here! The project started in 2012 with the idea of providing technical content during the Christmas Advent period, so keep looking for nice things under the Java Christmas tree! ??. Tune in each day for an article that explores the wide range of topics in system administration. id24conf on Twitter.

Design

Design Development Programming Website

Analyzing a High Rate of Paging

Brendan Gregg

AUGUST 29, 2021

1072-aws (xxx) 12/18/2018 _x86_64_ (16 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 5.03 avg-cpu: %user %nice %system %iowait %steal %idle 14.81 avg-cpu: %user %nice %system %iowait %steal %idle 14.86 avg-cpu: %user %nice %system %iowait %steal %idle 14.95 avg-cpu: %user %nice %system %iowait %steal %idle 14.54

Cache

Cache C++ AWS Systems

Which is the Best MongoDB GUI? — 2019 Update

Scalegrid

AUGUST 15, 2019

In 2014, we discussed 4 of the top MongoDB GUIs: MongoVue, MongoHub, RockMongo, and Robo 3T (formerly Robomongo), and again in 2016: MongoDB Compass, Robo 3T, Studio 3T, and MongoBooster. Query Code for converting queries to five target language: Java, Python, C#, PHP, and JavaScript (Node.js). The Best Mongo GUI’s of 2014.

Database

Database Servers Monitoring Availability

Technology Performance Pulse

The Return of the Frame Pointers

Netflix End of Series 1

Trending Sources

The Speed of Time

Netflix End of Series 1

The Speed of Time

A look behind the scenes of AWS Lambda and our new Lambda monitoring extension

The Speed of Time

Analyzing a High Rate of Paging

C++ safety, in context

Coloring Flame Graphs: Code Hues

MariaDB vs MySQL: Key Differences and Use Cases

Advent Calendars For Web Designers And Developers (December 2021 Edition)

Analyzing a High Rate of Paging

Which is the Best MongoDB GUI? — 2019 Update

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