Thanks, that's very useful.

I've not used tcpdump, but perhaps it can tell you which end initiated the
close?

If it is JMeter, it could well be that there is a Java property that can be
set to tell the http connection method how many times to use the connection
before closing it - but finding information on this might not be easy...

However, 100 requests per connection is a lot better than 1!

Sebastian
-----Original Message-----
From: Ryan Lissack [mailto:rlissack@buildonline.com]
Sent: 23 April 2004 11:45
To: 'JMeter Users List'
Subject: RE: Number of HTTP connections if using keep-alive


Hi Sebastian,

Thanks for the response.

I am using JMeter 2.0 with the default HTTP sampler and Tomcat 4.1.

After a little bit of playing with tcpdump I can confirm that, if keep-alive
is being used, *each thread* gets its own connection and will handle 100
requests using that connection before re-establishing it.

I am not sure whether it is Tomcat or JMeter that breaks the connection
after each 100 requests (Tomcat does *not* have maxKeepAliveRequests
specified for the Coyote connector).

Regards,
Ryan.

-----Original Message-----
From: BAZLEY, Sebastian [mailto:sebastian.bazley@atosorigin.com]
Sent: 22 April 2004 12:27
To: 'JMeter Users List'
Subject: RE: Number of HTTP connections if using keep-alive


Depends on the version of JMeter and the Http implementation.

If using 2.0, and the new HttpSampler (which uses Apache HttpClient), then
it should be 1 per thread, though this has not been confirmed. If this is
not the case, please file a Buzilla report, as the intention was to re-use
connections if so requested.

If using the default Http implementation, who knows?
The standard Java interface offers no way to re-use connections. 
If keep-alive is set, it is up to the Java implementation as to what it
does.

Sebastian
-----Original Message-----
From: Ryan Lissack [mailto:rlissack@buildonline.com]
Sent: 22 April 2004 11:31
To: 'jmeter-user@jakarta.apache.org'
Subject: Number of HTTP connections if using keep-alive


Hi,

How many HTTP connections will JMeter 2.0 make if the server is using
keep-alive?  1 per thread / 1 per thread group / 1 per test ?

Thanks,
Ryan

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