Turn off the log level messages in the IT_BUS.TRANSPORT.HTTP. For example to log all messages except these the configuration would be:
event_log:filters ["*=*", "IT_BUS.TRANSPORT.HTTP=WARNING FATAL ERROR"];

The timeout values can be increased by setting the properties in the wsdl file within the "wsdl:port" stanza. Please see the extract below for details, for a full sample wsdl please see <artix_install>\\demos\\basic\\http_timeout\\etc\\hello_world.wsdl

<wsdl:definitions name="HelloWorld" targetNamespace="http://www.iona.com/http_timeout"
    xmlns="http://schemas.xmlsoap.org/wsdl/"
    xmlns:http-conf=http://schemas.iona.com/transports/http/configuration
...
     <wsdl:service name="SOAPService">
        <wsdl:port binding="tns:Greeter_SOAPBinding" name="SoapPort">
            <soap:address location="http://localhost:9055"/>
            <http-conf:client SendTimeout="5000" ReceiveTimeout="5000"/>
            <http-conf:server SendTimeout="5000" ReceiveTimeout="5000"/>
        </wsdl:port>
     </wsdl:service>
</wsdl:definitions>

By default if Artix receives a timeout while trying to connect to the service it will try a total of five connection attempts. This is controlled by the configuration Connection.

These properties can also be set programmatically please see the documentation for this.

References to other documentation.
"Developing Artix Applications in Java",  "Working with Transport Attributes" 
"Developing Artix Applications with C ",  "Working with Transport Attributes"