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Java using 100% CPU and Alfresco no respond

Question asked by xixi999 on Sep 20, 2013
Latest reply on Sep 21, 2013 by kaynezhang
Install environment: Ubuntu 12.04 with Alfresco 4.0.d stand install on AWS ec2, data size about 100G. The system run about more than about a year without issues. Did  a system update and reboot few days ado, now we got in trouble, as far as the system init finished, the java still using about 100%CPU(2 core, init stage  120~199% usage), and the system become slow then no respond. The CPU usage on AWS like a flat line, even the tomcat page can't load.