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From Arica <xun...@263.net>
Subject High CPU usage impact to log4j
Date Wed, 24 Jun 2009 06:22:04 GMT

Hi, buddies

I deployed the log4j as the logging tool of my JVM. Recently, I found that
the log4j does not work, I could not find any log output when the JVM
encountered the high CPU usage issue. In the case, the JVM took more than
90% CPU usage. I really want to know that my JVM is doing...I know I can do
it through JVM thread dump. But the question is why log4j does not output
any logs? I cannot find any warning from the guild to state that log4j will
lose logs during the CPU penic.

Do you have any idea about that? Or does log4j define any threshold of CPU
usage?

Thanks.
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