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From "Pid *" <...@pidster.com>
Subject Re: java-process blocks cpu core to 100%
Date Sun, 30 Jan 2011 22:36:01 GMT
On 28 Jan 2011, at 14:32, Christopher Schultz
<chris@christopherschultz.net> wrote:

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> Chris,
>
> On 1/28/2011 9:16 AM, Christoph Balthaus wrote:
>> Sorry, not possible - it's running on a remote machine where I can just use
>> the ibm package and in theirs JDK jstack is not included.
>> Are there any other ways to get it via network?
>
> You could use JConsole remotely, but you need to have remote JMX
> configured for the JVM which would probably require a JVM restart.

Does this JRE support the Attach API? if so it's possible to enable
JMX for remote access dynamically.


p

> You
> can also send the process the SIGQUIT and it will emit a thread dump to
> stdout. If you don't have shell access, that might be difficult, too.
>
> This might be a good time to start testing a new Tomcat release for your
> environment: 6.0.18 is more than 2 years old and many performance and
> security fixes have gone into Tomcat since then. Warning: the NIO
> connector appears to be broken in 6.0.30 and looks like it will be in
> 6.0.31. Consider using 6.0.29 or waiting for 6.0.32 if you are using the
> NIO connector.
>
> - -chris
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