No One Puts Java in the Container

This is a past event

34 people went


1255 Pear Avenue · Mountain View, CA

How to find us

Room: PR55-Emoji -- Check in at the Front Desk

Location image of event venue


Event Description

In conjunction with the vJUG and the Silicon Valley Java User Group, the vJUG is conducting a 24 hour virtual conference. Our session will be one of the 24.

No One Puts Java in the Container

The current craze of Docker and micro-services has everyone sticking their processes inside a container… but do you really understand cgroups and how they work? Do you understand the difference between CPU Sets and CPU Shares? Do you understand the consequence of what impact the cgroup constraints have on the JRE? This talk starts with a deep understand of Java’s memory management and GC characteristics and how JRE characteristics change based on core count. We will continue the talk looking at containers and how resource isolation works. The session will detail specifically the difference between CPU sets and CPU shares and memory management. The session will close with a deep understanding of the consequences of running the JRE in a CPU share environment and the potential for pseudo-random behavior of running in a heterogeneous datacenter.

About the Speaker

Ken Sipe is a Cloud Solution Architect and Distribute Systems Engineer at Mesosphere, focused on helping companies simplify the development and operation of large scale infrastructure and distributed systems with Apache Mesos and DC/OS. Ken is a JavaOne Rockstar, an author and an accomplished international speaker on the practices of software architecture and engineering, continuous delivery and agile practices. Ken is an Apache Mesos contributor and an Apache committer on the Myriad, HDFS, Cassandra and Kafka Apache Mesos framework projects.

Watching the Live Stream Online

To be eligible for prizes (see below), please register for this meetup.

For the live video feed, please go to the vJUG page:


5:30-6:00pm Arrive & mingle

6:00-7:00pm Main Talk followed by Q&A

Prizes and Sponsorship
We also have some great prizes to give away, including:

An IntelliJ Ultimate Edition license ($400 value)

This event is brought to you with support from the following sponsors:

Jetbrains ( gives out free IntelliJ licenses at our meetings.

If you are interested in having your company appear here, please let me know (!