Hi Sebb, Thanks for the comments and info.
Well, when I had 5 threads, the throughput was 12/sec. When I increased the thread to 50, I still got 12/sec. What does this mean? If, throughput is total number of requests/unit time, then what I get is 12 requests/sec, otherwise approx 100 ms.per request, right? Does this mean, that the maximum total number of concurrent users is 12 on this server with current setting? Sorry for being totally confused. Thanks Bruce On Tue, Sep 8, 2009 at 6:47 PM, sebb<[email protected]> wrote: > On 08/09/2009, Bruce Foster <[email protected]> wrote: >> 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. > > Should be OK if you use CSV output in non-GUI mode with just one Listener. > >> 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? > > No idea what you are asking here. > >> I need to find out if the system can handle 500 concurrent users. >> >> Throughput is the response time right > > No, throughput is total number of requests/unit time. > > It is not related to response time at all, only to the number of > requests generated by JMeter (assuming they are all successful). > > Of course, if the response time is 1 second, then the maximum > throughput JMeter can generate from a _single_ thread is 60/second. > But with 100 threads, it could generate 6000/second (assuming the > network, server etc can handle the load). > >> 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)? > > Just use more threads. > >> How to measure the load / stress on the server? > > If you are referring to CPU usage etc., you'll need to use the > appropriate OS tools. > > Depending on the server, you may be able to use > > http://jakarta.apache.org/jmeter/usermanual/component_reference.html#Monitor_Results > >> 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 >> >> >> >> >> >> >> >> >> --------------------------------------------------------------------- >> >> >> >> To unsubscribe, e-mail: >> [email protected] >> >> >> >> For additional commands, e-mail: >> [email protected] >> >> >> >> >> >> >> >> >> >> >> > >> >> >> >> >> >> >> --------------------------------------------------------------------- >> >> >> To unsubscribe, e-mail: [email protected] >> >> >> For additional commands, e-mail: [email protected] >> >> >> >> >> >> >> >> > >> >> > --------------------------------------------------------------------- >> >> > To unsubscribe, e-mail: [email protected] >> >> > For additional commands, e-mail: [email protected] >> >> > >> >> > >> >> >> >> --------------------------------------------------------------------- >> >> To unsubscribe, e-mail: [email protected] >> >> For additional commands, e-mail: [email protected] >> >> >> >> >> > >> > --------------------------------------------------------------------- >> > To unsubscribe, e-mail: [email protected] >> > For additional commands, e-mail: [email protected] >> > >> > >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [email protected] >> For additional commands, e-mail: [email protected] >> >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
