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Dhinakaran commented on DIRMINA-1084: ------------------------------------- Agreed, we are using openfire 4.0.3, even latest openfire 4.1.3 is using this Mina 2.0.7 version only. > 100% CPU when using IoBuffer.shrink() method in some cases > ---------------------------------------------------------- > > Key: DIRMINA-1084 > URL: https://issues.apache.org/jira/browse/DIRMINA-1084 > Project: MINA > Issue Type: Bug > Components: SSL > Affects Versions: 2.0.7 > Environment: Any > Reporter: Dhinakaran > Priority: Major > > {code:java} > "socket_c2s_ssl-thread-6" daemon prio=10 tid=0x82f5a000 nid=0x1355 runnable > [0x7d618000] > java.lang.Thread.State: RUNNABLE > at > org.apache.mina.core.buffer.AbstractIoBuffer.shrink(AbstractIoBuffer.java:317) > at > org.apache.mina.filter.ssl.SslHandler.fetchOutNetBuffer(SslHandler.java:406) > at > org.apache.mina.filter.ssl.SslHandler.writeNetBuffer(SslHandler.java:642) > at > org.apache.mina.filter.ssl.SslFilter.initiateClosure(SslFilter.java:665) > at org.apache.mina.filter.ssl.SslFilter.filterClose(SslFilter.java:627) > - locked <0x9f31fb80> (a org.apache.mina.filter.ssl.SslHandler) > {code} > When one tries to shrink a buffer which minimal capacity is set to 0, and set > the size to 0, it enter into an infinite loop. > Bug https://issues.apache.org/jira/browse/DIRMINA-988 has created in 2.0.8 it > was a similar bug, but the code is slightly different in 2.0.7. But the > problem is same. We should acknowledge this issue is present in 2.0.7. > This is due to this loop : > {code:java} > while (newCapacity >>> 1 >= minCapacity) { > newCapacity >>>= 1; > } > {code} > -- This message was sent by Atlassian JIRA (v7.6.3#76005)