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From André Warnier ...@ice-sa.com>
Subject Re: Tomcat Behavior on Multiple HTTP requests from same browser
Date Wed, 20 Mar 2013 15:26:44 GMT
Christopher Schultz wrote:
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> 
> Saurabh,
> 
> On 3/19/13 9:46 PM, Saurabh Agrawal wrote:
>> <Executor     name="hybrisExecutor" namePrefix="hybrisHTTP" 
>> maxThreads="${tomcat.maxthreads}" 
>> minSpareThreads="${tomcat.minsparethreads}" 
>> maxIdleTime="${tomcat.maxidletime}"/>  <Connector
>> port="${tomcat.ajp.port}" maxHttpHeaderSize="8192" maxThreads="200"
>>  protocol="org.apache.coyote.ajp.AjpProtocol" 
>> executor="hybrisExecutor" enableLookups="false" acceptCount="100" 
>> connectionTimeout="20000" URIEncoding="UTF-8" 
>> disableUploadTimeout="true" />
>>
>> <Connector port="${tomcat.http.port}" maxHttpHeaderSize="8192" 
>> maxThreads="${tomcat.maxthreads}" 
>> protocol="org.apache.coyote.http11.Http11Protocol" 
>> executor="hybrisExecutor" enableLookups="false" acceptCount="100" 
>> connectionTimeout="20000" URIEncoding="UTF-8" 
>> disableUploadTimeout="true" />
> 
> Note that your <Executor> has maxThreads="200" and your <Connector>
> uses that <Executor>: your ${tomcat.maxthreads} is being ignored.
> 
That, and the default keepalive setting, are probably the keys here.
And the observation of Chuck about the HTTP and AJP connectors. Over which Connector do 
the test requests actually come in ?

And a question : is the "simulation" with the 10000 clients really comparable to what you

expect in the reality ?  For example, if the simulation requests one page per client, and

then does nothing else with that page; but the real clients would get a page, and then 
immediately request the 50 thumbnail images referenced by that page, conditions would be 
really different, and keepalive would have a very different effect.

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