jmeter-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From sebb <seb...@gmail.com>
Subject Re: Generate Summary Results - Incorrect Calculations?
Date Wed, 07 Jan 2009 15:06:03 GMT
On 07/01/2009, Woodcock, Simon <swoodcoc@qualcomm.com> wrote:
> Thanks for your prompt response Sebb. Apologies for the cross-post.
>
>  So you are confident that results given ( requests per second ) for both the interval
and total times are accurate and that there are no known bugs in this area?

Reasonably so.

If you have saved the individual results to a JTL file you can check
the overall results for yourself, by checking for the min start time
and the max end time.

>  Regards,
>
>
>  Simon.
>
>
>  -----Original Message-----
>  From: sebb [mailto:sebbaz@gmail.com]
>  Sent: 07 January 2009 14:29
>  To: JMeter Users List
>  Subject: Re: Generate Summary Results - Incorrect Calculations?
>
>  [Cross-post to JMeter-dev list removed]
>
>  On 07/01/2009, Woodcock, Simon <swoodcoc@qualcomm.com> wrote:
>  > Help please . .
>  >
>  >  I'm I misinterpreting the summary results? Take the following for example . .
>  >
>  >  Generate Summary Results +   127 in  14.4s =    8.8/s Avg:   122 Min:     7 Max:
783 Err:     0 (0.00%)
>  >  Generate Summary Results +  7681 in 179.9s =   42.7/s Avg:  1269 Min:     1 Max:
17388 Err:     0 (0.00%)
>  >  Generate Summary Results =  7808 in 194.3s =   40.2/s Avg:  1251 Min:     1 Max:
17388 Err:     0 (0.00%)
>  >  Generate Summary Results + 10258 in 192.9s =   53.2/s Avg:  3589 Min:     1 Max:
43845 Err:     3 (0.03%)
>  >  Generate Summary Results = 18066 in 374.3s =   48.3/s Avg:  2578 Min:     1 Max:
43845 Err:     3 (0.02%)
>  >  Generate Summary Results + 11856 in 188.9s =   62.8/s Avg:  2683 Min:     0 Max:
45321 Err:     6 (0.05%)
>  >  Generate Summary Results = 29922 in 554.4s =   54.0/s Avg:  2620 Min:     0 Max:
45321 Err:     9 (0.03%)
>  >
>  >  Total number of requests are an addition of requests made in each interval - 
127+7681+10258+11856 = 29922
>
>  Agreed.
>
>  >  Total time would then, you would assume, be an addition of each of the interval
times - 14.4+179.9+192.9+188.9 = 576.1s
>
>  No, the total time is calculated independently from the first and last
>  times seen.
>
>  The variation is due to timer resolution.
>
>  >  However, total time seems to be calculated as -  14.4+180+180+180 = 554.4s
>  >
>  >  Where 180s is the default interval time.
>  >
>  >  When calculating total request per second, the calculation is:
>  >
>  >  29922 / 554.4 = 53.97 requests per second
>  >
>  >  As opposed to:
>  >
>  >  29922 / 576.1 = 51.94 requests per second
>  >
>  >  Is there not a discrepancy in the total elapsed time and therefore the requests
per second or am I completely misunderstanding the results given?
>
>  See above.
>
>  >  Any help clarifying this would be greatly appreciated.
>  >
>  >
>  >  Thanks in advance,
>  >
>  >
>  >  Simon.
>  >
>  >  --
>  >  Simon Woodcock
>  >  Staff Engineer / Manager
>  >
>  >  QUALCOMM Poole Limited
>  >  Voyager House, 253-257 High Street North, Poole, Dorset, BH15 1DX UK
>  >  Tel: +44 (0)1202 440610, Fax: +44 (0)1202 440601
>  >  www.qualcomm.com<http://www.qualcomm.com>
>  >  This e-mail transmission, and any documents, files or previous e-mail messages
attached to it, may contain confidential information that is legally privileged. If you are
not the intended recipient, or a person responsible for delivering it to the intended recipient,
you are hereby notified that any disclosure, copying, distribution or use of any of the information
contained in or attached to this message is STRICTLY PROHIBITED. Interception of e-mail is
a crime under the Electronic Communications Privacy Act, 18 U.S.C. 2510-2521 and 2107-2709.
If you have received this transmission in error, please immediately notify me by reply e-mail
at simon.woodcock@qualcomm.com<mailto:simon.woodcock@qualcomm.com> or by telephone at
+44 (0)1202 207397 and destroy the original transmission and its attachments without reading
them or saving them to disk. Thank you.
>  >
>  >
>
>
> ---------------------------------------------------------------------
>  To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
>  For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
>
>
>  ---------------------------------------------------------------------
>  To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
>  For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
>
>

---------------------------------------------------------------------
To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
For additional commands, e-mail: jmeter-user-help@jakarta.apache.org


Mime
View raw message