We are experiencing high CPU utilization when starting the elasticsearch & logstash services simultaneously.
The JAVA process is occupying more than 300% CPU.
The elasticsearch holds some multiple JAVA threads and makes the CPU reaches to max utilization.
Elasticsearch version (bin/elasticsearch --version): 2.3.4
JVM version (java -version): 1.8.0
OS version (uname -a if on a Unix-like system): RHEL 7.2