The switch is from APR to JIO. SSL practically doesn't get used.
Almost all pages served are jsp or java, very little static files are
served and keep-alive is on.
where peak busy-threads used to be ~50 with APR, now it has become ~200
with JIO.
Here are the connector definitions for reference (no executor is used):
- APR:
<Connector port="80"
protocol="org.apache.coyote.http11.Http11AprProtocol"
compression="1024" keepAliveTimeout="60000"
maxKeepAliveRequests="-1"
enableLookups="false" redirectPort="443" maxThreads="150"
pollerSize="32768"
/>
- JIO:
<Connector port="80"
protocol="org.apache.coyote.http11.Http11Protocol"
compression="1024" connectionTimeout="10000"
keepAliveTimeout="60000" maxKeepAliveRequests="-1"
enableLookups="false" redirectPort="443"
maxThreads="720"/>
On Fri, 2010-03-05 at 19:13 +0100, Caldarale, Charles R wrote:
> > From: Christopher Schultz [mailto:[email protected]]
> > Subject: Re: jvm exits without trace
> >
> > I thought he said he was using APR, not NIO.
>
> He was, but IIRC, switched away from it to see if that would affect the
> outages. What we don't know is what was switched to - JIO or NIO. If it's
> JIO, there may be a lot of threads tied up handling persistent HTTP
> connections, possibly causing heap or other resource problems.
>
> - Chuck
>
>
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