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From "Alexandre Akoulov" <>
Subject RE: JMeter sends incomplete http request
Date Wed, 22 Sep 2004 02:20:27 GMT
Thanks, Krishna and sebb, for your replies.

Additional details to my original problem:
	using JMeter v2.0.1 (GUI version)
	runs on one CPU Windows XP machine
	with Java 1.4.2_05 installed
	jmeter.log does not have any unusual messages
	web server indicates that the request sent by JMeter is incomplete
		(logs [org.jboss.jetty] WARNING: Read
timed out)

Guys, could you pls clear something? The ramp up period determines in what
time JMeter is to initiate all threads.

Then if the ramp up period is zero and number of threads is 100 then all
threads will be started at the same time. Therefore, this option is the
closest to real life (when one hundred users hit the system at the same

If the ramp up period is 100 and the number of threads is 100 then each
successive thread will start 1 second after the previous one. Therefore, in
real life that would mean that the system is not hit at the same time but
rather every one second ( a new user logs into the system every second).

I've tried to play with the ramp up period. I can see that the bigger the
ramp up period is the better my web app responds. But then it is not a real
reflection of the web app's load handling, is it?

Thanks a lot to all replies in advance,


-----Original Message-----
From: krishna raj []
Sent: Wednesday, 22 September 2004 10:25 AM
To: JMeter Users List;
Subject: Re: JMeter sends incomplete http request

hi alex,

try the increase the ramp up to 100 or over depending on your application
speed of response.

if it still fails increase ramup value more to 150 or 200 keeping increasing
and try this is the way i solved the problem.


-----Original Message-----
From: sebb []
Sent: Tuesday, 21 September 2004 8:41 PM
To: JMeter Users List;
Subject: Re: JMeter sends incomplete http request

I think I've seen something similar when testing with 60 threads on a
4 CPU AlphaServer running TCP samples as fast as possible - a few of
the response assertions failed, even though the trace at the server
end showed that it had apparently sent the correct response. However,
perhaps the response was mangled in transit or not fully collected. I
need to check this out someday...

It would help to know:
- what version of JMeter you are using?
- platform (JVM, OS, hardware - does it have multiple CPUs?)
- any messages in jmeter.log?
- does the server show the incorrect request, or is it just the
response assertion that sees it?

In the meantime, you could perhaps get round the issue by running two
Jmeter instances in parallel.
Using batch (non-GUI) mode will reduce the memory requirements, as
will removing any unnecessary listeners. In fact there is no need for
any listeners in the test plan if you use the -t flag, as that will
create one for you.

Alexandre Akoulov <> wrote:
Hi all,

I'd greatly appreciate if you could help me with the following problem.

I've set up a jmeter test for my web app. Currently it only tests the login

The following are the details of the test:

Just one thread group
number of threads - 220
ramp-up period - 0
one loop controller (loops three times)
uniform timer (constant 2500; max 5000)
HTTP Request Sampler (
three parameters: licensee, dynamically generated username, password)

This test runs OK with 210 threads. All requests sent by JMeter look
something like following (as extracted from Assertion Results listener):

POST http://thor/icms-servlet/icms
Query data:

However, as soon as the number of threads is increased to 220 then some of
the http requests sent by JMeter are incomplete (as extracted from Assertion
Results listener):

null http://thor/icms-servlet/icms
Test failed, text expected to contain /btnOk/

I've searched the archive and faq hoping to get some hints into this issue,
but could not find anything. Could you please tell me what needs to be done
in order to ensure that JMeter sends complete http requests?

Thanks again for your help.


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