article thumbnail

The Return of the Frame Pointers

Brendan Gregg

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, for example, has the -XX:+PreserveFramePointer option.

Java 145
article thumbnail

Netflix End of Series 1

Brendan Gregg

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).

Java 145
Insiders

Sign Up for our Newsletter

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Trending Sources

article thumbnail

The Speed of Time

Brendan Gregg

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. There's no Java stack—there should be a tower of green Java methods—instead there's only a single green frame or two.

Speed 126
article thumbnail

Side Projects Make You Better At Your Full Time Job

Professor Beekums

In 2014, I had been hearing a lot of talk about Go. Having learned to code in Java and spending my early career working in Java, I was used to complex inheritence hierarchies and many many layers of abstraction. It sounded like a really exciting language that I wanted to try. My gut reaction was to dismiss it.

Java 55
article thumbnail

Netflix End of Series 1

Brendan Gregg

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.

Java 52
article thumbnail

Toward an API for the real numbers

The Morning Paper

That app is subject to “voluminous (public) user feedback”, and in the 2014 floating-point based calculator, bug reports relating to inaccurate results, unnecessary zeroes, and the like. Under the covers, numbers are represented by three fields: ratFactor is a BoundedRational with numerator and denominator stored as Java BigInteger s.

Java 143
article thumbnail

The Speed of Time

Brendan Gregg

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. This is how Java flame graphs looked at the time. Maybe Java is calling it more often for some reason. us on Ubuntu.

Speed 52