Experimental Physics and
Industrial Control System

Dear，all

I have a problem that java processes always occupy too much CPU, causing the computer system to crash,while phoebus is running.

After restarting the computer or phoebus software, the system becomes smooth.  However,the computer becomed sluggish after more than ten hours of uptime when phoebus’s file is display runtime. There is only one setting for address in the aile settings.ini.  I have tried different versions of phoebus, but the same situation has occurred. I used jstack, top -H, and matching pid with nid to find out what is happening. I found that the culprit was QuantumRenderer with 95+% CPU usage.

The application is using a 64Bit version of centos 7 with base3-15-5. And the current version is phoebus-4.6.6 with jdk-16.0.1.

I can't figure out where should I look to find out what is the problem...

How can I solve this problem?

Thanks！

  CHEN Huiting

  Beamline Contrl Group, SSRF

  No. 239 Zhangheng Road, Pudong, Shanghai