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October 23-26, 2017 - Prague, Czech Republic
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Wednesday, October 25 • 11:15 - 11:55
No One Puts the JVM in a Container - Joerg Schad & Johannes Unterstein, Mesosphere

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The current craze of Docker 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?
Spark is a Scala application that lives inside a Java Runtime, 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.

Speakers
avatar for Jörg Schad

Jörg Schad

Software Engineer, Mesosphere
Jörg is a software engineer at Mesosphere in Hamburg. In his previous life he implemented distributed and in memory databases and conducted research in the Hadoop and Cloud area. His speaking experience includes various Meetups, international conferences, and lecture halls.
avatar for Johannes Unterstein

Johannes Unterstein

Distributed Applications Engineer, Mesosphere
Johannes Unterstein is a Distributed Applications Engineer at Mesosphere in Hamburg where he works on Mesosphere's Marathon project.


Wednesday October 25, 2017 11:15 - 11:55
Karlin I
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Attendees (26)