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From Greg Huber <gregh3...@gmail.com>
Subject Re: High cpu on Tomcat 8
Date Wed, 06 May 2015 07:04:26 GMT
> > When the CPU usage goes high, does the server actually slow down?

> I do not think so, it makes the server slowdown

>> Sounds like you're contradicting yourself; you do not think it slows
down, or it does slow down?

It would slow down as the server is at 80%, but if it was the webapp in a
deadlock it would not respond, so it is some other thread/task.  From the
profiler the only one active thread was the was the ajp-apr-8009-Poller.

I am hoping the memory is the resolution, maybe I will simulate some high
load (or wait till Friday/Saturday) and see if its resolved.

Cheers Greg


On 5 May 2015 at 12:48, Caldarale, Charles R <Chuck.Caldarale@unisys.com>
wrote:

> > From: Greg Huber [mailto:gregh3269@gmail.com]
> > Subject: Re: High cpu on Tomcat 8
>
> > > Have you set a pollerThreadCount?
>
> > I have had a look and I cannot find where this is set.  Is there any
> > documentation on this?
>
> The pollerThreadCount applies only to the HTTP version of the <Connector>,
> not the AJP one.  Red herring.
>
> > > When the CPU usage goes high, does the server actually slow down?
>
> > I do not think so, it makes the server slowdown
>
> Sounds like you're contradicting yourself; you do not think it slows down,
> or it does slow down?
>
>  - Chuck
>
>
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