Istio build: release-0.8-20180523-09-15 (daily)
Kube version: 1.9.2_1501
Cloud environment: IBM Cloud Kubernetes Service (IKS)
Kube Cluster: 3-node 4-core, 16GB

Regression patrol run on this build showed that the new istio-tracing component that now is installed with the default manifest file (istio-demo.yaml) has a serious memory leak under load and uses all memory available in the node, then crashes and it is restarted.