CEO and co-founder of Jelastic PaaS, company that delivers turnkey business multi-cloud platform for MSPs, Telcos and hosting providers. An expert in large-scale distributed applications and enterprise platforms. Designed the core technology of the Platform-as-a-Service that runs millions of containers across decentralized network of independent data center providers worldwide. Designed and created solutions for National Data Center (NDC) and National Antarctic Scientific Centre (NASC) of Ukraine. Was one of the key engineering leads at the National Space Agency of Ukraine. Focusing on development of cutting edge cloud solutions and business relations around it.
Containers provide much better elasticity and density than VMs, but JVM-based applications are not fully container-ready. The first issue is that HotSpot JVM doesn’t release unused committed heap memory automatically. Second, it is not possible to increase the size of the JVM heap at runtime. To solve these major issues and make JVM more container-friendly, a new patch is implemented for the Garbage-First collector in OpenJDK 12. This session shares details of what is done and how the added improvements enhance resource consumption efficiency.
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