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sslservlet transport - too many client requests
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created by <a href="http://community.jboss.org/people/jburugupalli">Janardhan Burugupalli</a> in <i>JBoss Remoting</i> - <a href="http://community.jboss.org/message/569811#569811">View the full discussion</a>
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<div class="jive-rendered-content"><p>HI All,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I am using remoting 2.5.1 with JBoss 5.1.0</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I have setup sslservlet transport for my EJB2 beans. The invocation from the client side works fine.</p><p><span>Invocation URL </span><a class="jive-link-external-small" href="https://serverName:443/unified-invoker/SSLJNDIFactory/?dataType=invocation&return-exception=true" target="_blank">https://serverName:443/unified-invoker/SSLJNDIFactory/?dataType=invocation&return-exception=true</a></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>To measure performance with a server behind firewall, I made a call on the server which returns a big List with objects back to the client.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Too many server client pings with small data (maximum of 1434 bytes).</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I monitored this single call with wireShark and the data is as follows</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><table border="1" cellpadding="3" cellspacing="0" class="jiveBorder" style="border: 1px solid #000000; width: 640px; height: 116px;"><tbody><tr><th align="center" style="background-color:#6690BC;;border: 1px solid #000000;background-color:#6690BC" valign="middle"><span style="color: #ffffff;"><strong>Nr</strong></span></th><th align="center" style="background-color:#6690BC;;border: 1px solid #000000;background-color:#6690BC" valign="middle"><span style="color: #ffffff;"><strong>Time(milli seconds)</strong></span></th></tr><tr><td style="border: 1px solid #000000;">1 - 60 (just for logging in)</td><td style="border: 1px solid #000000;">4.54</td></tr><tr><td style="border: 1px solid #000000;"><strong>After this method call to fetch huge data</strong></td><td style="border: 1px solid #000000;"></td></tr><tr><td style="border: 1px solid #000000;">61 (response from the huge method)</td><td style="border: 1px solid #000000;">123.47 (response after a delay of 120 seconds, I checked the server and the mthod took 93 seconds)</td></tr><tr><td style="border: 1px solid #000000;"><strong>3881 </strong>(somany exchanges from server)</td><td style="border: 1px solid #000000;">215.574</td></tr></tbody></table><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>So the initial calls 1-60 are just remoting calls for the authentication.</p><p>After that the actual method is called. After a huge delay the first response from the server us obtained. After the first response there are 3800 more exchanges between the server and the client to complete the data transfer.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I tried to use the -Dremoting.payload.size=4098 as a VM param to increase the packet size and decrease the client/server traffic, but did not work.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Is there a way to over come this problem? Appreciate any feedback.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>thanks.</p></div>
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