tomcat 线程死锁..求救org.apache.tomcat.util.net.AprEndpoint

[trojanth]

[2007-03-24 15:45:35] [info] "http-8089-Poller-5"
[2007-03-24 15:45:35] [info] daemon
[2007-03-24 15:45:35] [info] prio=6 tid=0x008a1510
[2007-03-24 15:45:35] [info] nid=0x26e4
[2007-03-24 15:45:35] [info] in Object.wait()
[2007-03-24 15:45:35] [info] [0x4a17f000..0x4a17fcec]
[2007-03-24 15:45:35] [info] at java.lang.Object.wait(Native Method)
[2007-03-24 15:45:35] [info] - waiting on <0x082cb918> (a org.apache.tomcat.util.net.AprEndpoint$Poller)
[2007-03-24 15:45:35] [info] at java.lang.Object.wait(Unknown Source)
[2007-03-24 15:45:35] [info] at org.apache.tomcat.util.net.AprEndpoint$Poller.run(AprEndpoint.java:1127)
[2007-03-24 15:45:35] [info] - locked <0x082cb918> (a org.apache.tomcat.util.net.AprEndpoint$Poller)
[2007-03-24 15:45:35] [info] at java.lang.Thread.run(Unknown Source)
[2007-03-24 15:45:35] [info]
[2007-03-24 15:45:35] [info] "http-8089-Poller-4"
[2007-03-24 15:45:35] [info] daemon
[2007-03-24 15:45:35] [info] prio=6 tid=0x008a0250
[2007-03-24 15:45:35] [info] nid=0x21ac
[2007-03-24 15:45:35] [info] in Object.wait()
[2007-03-24 15:45:35] [info] [0x4a13f000..0x4a13fd6c]
[2007-03-24 15:45:35] [info] at java.lang.Object.wait(Native Method)
[2007-03-24 15:45:35] [info] - waiting on <0x082cb9a8> (a org.apache.tomcat.util.net.AprEndpoint$Poller)
[2007-03-24 15:45:35] [info] at java.lang.Object.wait(Unknown Source)
[2007-03-24 15:45:36] [info] at org.apache.tomcat.util.net.AprEndpoint$Poller.run(AprEndpoint.java:1127)
[2007-03-24 15:45:36] [info] - locked <0x082cb9a8> (a org.apache.tomcat.util.net.AprEndpoint$Poller)
[2007-03-24 15:45:36] [info] at java.lang.Thread.run(Unknown Source)
[2007-03-24 15:45:36] [info]
这是什么原因造成的??很多这样的记录...网站访问时快时慢