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. A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. How would you _time_ time?

Speed 126

Speed Java AWS Virtualization 126

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. A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. How would you _time_ time?

Speed 40

Speed Java AWS Virtualization 40

Brendan Gregg

MAY 16, 2017

When I joined Netflix in April 2014, we had over 40 million subscribers in 41 countries. 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 75

Java Entertainment Engineering Scalability 75