ECS上JAVA进程占用了95%以上的CPU--com.mysql.jdbc.util.ReadAheadInputStream

最近ECS服务器总是报cpu使用率超95%的预警信息（8核16G的centos 6.5 X64）,求帮助！！！
我使用了TOP和PS命令查看了一些数据，发现有如下异常信息（图片附在后面）：
"catalina-exec-1166" daemon prio=10 tid=0x00007f6bac3b9000 nid=0x1522 runnable [0x00007f6b9cf68000]
java.lang.Thread.State: RUNNABLE

at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:152)
at java.net.SocketInputStream.read(SocketInputStream.java:122)
at com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:113)
at com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:160)
at com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:188)
- locked <0x000000079e689e98> (a com.mysql.jdbc.util.ReadAheadInputStream)
at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2452)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2906)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2895)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3438)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1951)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2101)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2548)
- locked <0x000000079e68a168> (a java.lang.Object)
at com.mysql.jdbc.ConnectionImpl.commit(ConnectionImpl.java:1560)
- locked <0x000000079e68a168> (a java.lang.Object)
at com.mchange.v2.c3p0.impl.NewProxyConnection.commit(NewProxyConnection.java:1007)
- locked <0x00000007d73a7178> (a com.mchange.v2.c3p0.impl.NewProxyConnection)
at org.hibernate.transaction.JDBCTransaction.commitAndResetAutoCommit(JDBCTransaction.java:166)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:142)
at org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:657)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:755)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:724)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:475)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:270)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)

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