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From Yair Ogen <yairo...@gmail.com>
Subject Re: High CPU usage impact to log4j
Date Wed, 24 Jun 2009 07:33:24 GMT
Did you try running log4j with debug and see it reveals anything?
use -Dlog4j.debug=true

On Wed, Jun 24, 2009 at 10:30 AM, Arica <xun007@263.net> wrote:

>
> Hi, Allen
>
> I added some threads to do the infinite loop in my source codes for
> testing,
> the CPU went to very high because of the inifinite loop. I tried "kill -3 "
> to dump the JVM thread, but no response. I checked the log file, still no
> any out put. That's why I doubt that maybe the priority of log4j is quite
> low and the JVM won't assign any resource to log4j.
>
> Anyway, do you have any other suggestions or tips on this? Or what's the
> real root cause from your point of view?
>
>
>
> Allen-54 wrote:
> >
> > I am doubting if you are on the right path tracking the real problem.
> >
> >
> >
> > On Wed, Jun 24, 2009 at 4:22 PM, Arica <xun007@263.net> wrote:
> >
> >>
> >> 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.
> >> --
> >> View this message in context:
> >>
> http://www.nabble.com/High-CPU-usage-impact-to-log4j-tp24179322p24179322.html
> >> Sent from the Log4j - Users mailing list archive at Nabble.com.
> >>
> >>
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> >>
> >
> >
>
> --
> View this message in context:
> http://www.nabble.com/High-CPU-usage-impact-to-log4j-tp24179322p24179997.html
> Sent from the Log4j - Users mailing list archive at Nabble.com.
>
>
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>

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