Ilya ,After we switched build-in openJDK (jdk-8u181-ojdkbuild-linux-x64) to Zulu JDK (zulu8.38.0.13-ca-jdk8.0.212-linux_x64), it still has a high loading CPU usage.And we found the linux node has a low CPU frequency than other nodes w/ same configurations on CentOS 7.5. <http://apache-ignite-users.70518.x6.nabble.com/file/t645/photo_2019-05-20_23-41-55.jpg> <http://apache-ignite-users.70518.x6.nabble.com/file/t645/photo_2019-05-20_23-37-50.jpg> Finally, we correct the CPU frequency with cpupower idle-set -d 0 #1 2 3 4 5 6 cpupower frequency-set -g performance.The high CPU loading situation is getting well.So, this check could be a first check while system tuning.cpupower frequency-infousing a supported JDK.Thank you all!
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