Apache Portable Runtime (APR) based Native library for Tomcat

[Peter Sparkes <pe...@didm.co.uk>]

Hello,

I have a number of Tomcat6 instances, using mod_jk, each of which runs a separate website  (linux 
debian lenny).

My catalina.out files contain:

INFO: The APR based Apache Tomcat Native library which allows optimal performance in production 
environments was not found on the java.library.path:
/usr/lib/jvm/java-6-sun-1.6.0.22/jre/lib/amd64/server:
/usr/lib/jvm/java-6-sun-1.6.0.22/jre/lib/amd64:
/usr/lib/jvm/java-6-sun-1.6.0.22/jre/../lib/amd64:
/usr/java/packages/lib/amd64:/usr/lib64:
/lib64:
/lib:/usr/lib

Please do you believe that in the above case installing APR would lead to a performance improvement.

Regards

Peter




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Re: Apache Portable Runtime (APR) based Native library for Tomcat

[Pid <pi...@pidster.com>]

On 1/12/11 2:51 PM, Peter Sparkes wrote:
> Hello,
> 
> I have a number of Tomcat6 instances, using mod_jk, each of which runs a
> separate website  (linux debian lenny).
> 
> My catalina.out files contain:
> 
> INFO: The APR based Apache Tomcat Native library which allows optimal
> performance in production environments was not found on the
> java.library.path:
> /usr/lib/jvm/java-6-sun-1.6.0.22/jre/lib/amd64/server:
> /usr/lib/jvm/java-6-sun-1.6.0.22/jre/lib/amd64:
> /usr/lib/jvm/java-6-sun-1.6.0.22/jre/../lib/amd64:
> /usr/java/packages/lib/amd64:/usr/lib64:
> /lib64:
> /lib:/usr/lib
> 
> Please do you believe that in the above case installing APR would lead
> to a performance improvement.

APR improves performance when sending static files or performing SSL.

Are your Tomcat instances doing this?

What are the limiting performance factors for your apps at present?



p