Thanks All,

I will try the options and let you know. Got distracted with some
other work and will spend some time on the benchmarking next week.

I need to log the time taken by each request when 100/200/300/400/500
concurrent requests are made. Hope the logger can do that.

I have some  basic question being newbie;

when i have 5 users (threads) and 50 users (threads), the througput is
same 12/sec. Now how do I explain the user concurrency,  load /
stress?

I need to find out if the system can handle 500 concurrent users.

Throughput is the response time right which turns out to be around
85ms (12/sec), since there are no change from 5 to 50, how do I test
for 500 concurrent users ( or 300 or 200)?

How to measure the load / stress on the server?

Thanks a lot

Bruce







Thanks
Bruce



On Sat, Sep 5, 2009 at 6:09 PM, sebb<[email protected]> wrote:
> On 05/09/2009, Bruce Foster <[email protected]> wrote:
>> Hi Deepak and others,
>>
>>  Thanks for quick response and help.
>>
>>  Yes, the listener Save_Responses_to_a_file did the trick for me. Just
>>  ran a test with 1000 request to see the response and got all the
>>  images saved in directory. Well, the purpose was to check the response
>>  and not the performance (response time). After making sure that the
>>  image are correct, I ran the actual test to get the performance
>>  results.
>>
>>  Well, I'm using the random function and it worked well to generate
>>  random bound box request. Also, I adapted the osgeo test method of
>>  using pre generated csv file.
>>
>>  got a good result of 12 user per second in one method for total
>>  random, and 20 users per second for 800x600px random bbox request.
>>  need further more to test.
>>
>>  now i have to find out how to log the 10000 request time. jmeter gives
>>  only summary/average.
>
> In the GUI, that depends on the Listener - e.g. the Table View
> Listener shows response times. But don't use this for a performance
> test as it will use lots of memory.
>
> Just save the responses to a file, and you have all the details there,
> depending on what you have configured. Probably easiest to use CSV
> output.
>
>>  Cheers
>>
>> bruce.
>>
>>
>>
>>
>>
>>  On Thu, Sep 3, 2009 at 7:16 PM, sebb<[email protected]> wrote:
>>  > On 03/09/2009, Adrian Speteanu <[email protected]> wrote:
>>  >> true, you can use either method for what you said you need, but in
>>  >>  this case, saving the file on the test machine will significantly
>>  >>  increase the stress on the test environment (quality image files mean
>>  >>  lots of space and that means disk usage).
>>  >>
>>  >>  if you run the test with fewer requests and see that you get the
>>  >>  responses you expect, then you will also get these responses in a load
>>  >>  / stress test even if you don't save the files locally.
>>  >
>>  > Not necessarily; the server may degrade under load.
>>  >
>>  > For checking responses such as images, consider using
>>  >
>>  > 
>> http://jakarta.apache.org/jmeter/usermanual/component_reference.html#MD5Hex_Assertion
>>  >
>>  > Or you can use the HTTP sampler option "Save response as MD5 hash?"
>>  > and check that.
>>  >
>>  >>  this is
>>  >>  recommended.
>>  >>
>>  >>
>>  >>  On Tue, Sep 1, 2009 at 2:04 AM, Deepak Shetty<[email protected]> wrote:
>>  >>  > Hi
>>  >>  > you can add
>>  >>  > 
>> http://jakarta.apache.org/jmeter/usermanual/component_reference.html#Save_Responses_to_a_file
>>  >>  > OR you can add a BeanShell Post Assertion  that can read the bytes 
>> and save
>>  >>  > it to whatever you want or run comparisons
>>  >>  > OR
>>  >>  > 
>> http://jakarta.apache.org/jmeter/usermanual/component_reference.html#Sample_Result_Save_Configuration
>>  >>  > (Check Save Response Data) - I wouldnt do this though because some 
>> binary
>>  >>  > can cause the xml to break
>>  >>  >
>>  >>  >
>>  >>  > regards
>>  >>  > deepak
>>  >>  >
>>  >>  > On Mon, Aug 31, 2009 at 3:57 PM, Bruce Foster <[email protected]> 
>> wrote:
>>  >>  >
>>  >>  >> Hi List,
>>  >>  >>
>>  >>  >> I'm totally new to jmeter and also benchmarking.
>>  >>  >>
>>  >>  >> I'm testing a WMS (web map service) service performance of three
>>  >>  >> server softwares. Basically, they are GET request of images from a
>>  >>  >> server.
>>  >>  >>
>>  >>  >> Is there a way to SAVE the requested images? I have the mandate to
>>  >>  >> make sure that the response from the servers are exactly the same
>>  >>  >> image (in resolution, quality) that we request for.
>>  >>  >>
>>  >>  >> When I did a test, I put a network monitor. I could see 70mb of data
>>  >>  >> is transfered. Now, where to look for that, does jmeter save them in
>>  >>  >> cache?
>>  >>  >>
>>  >>  >> Note, I'm doing everything on a vmware machine running on my 
>> notebook.
>>  >>  >>
>>  >>  >>
>>  >>  >> Thanks
>>  >>  >> Bruce
>>  >>  >>
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>>  >>
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