https://bz.apache.org/bugzilla/show_bug.cgi?id=58863

            Bug ID: 58863
           Summary: High CPU Usage on http-nio exec
           Product: Tomcat 8
           Version: 8.0.29
          Hardware: PC
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Catalina
          Assignee: dev@tomcat.apache.org
          Reporter: piotrek.juchaker...@gmail.com

Created attachment 33445
  --> https://bz.apache.org/bugzilla/attachment.cgi?id=33445&action=edit
Trhead Dump

Java version: 1.8.0_66
OS: RedHat 6

Parameters for java:
-Xmx4G 
-Xms4G 
-XXoncMarkSweepGC 
-XX:+CMSClassUnloadingEnabled 
-XX:+CMSPermGenSweepingEnabled 
-verbose:gc 
-XX:+PrintGCDetails 
-XX:+PrintGCDateStamps 
-XX:+PrintHeapAtGC

I think it's similar to #BUG 58151:
https://bz.apache.org/bugzilla/show_bug.cgi?id=58151

I get high cpu usage, but after tomcat's restart cpu usage goes down. It
happens randomly.

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