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Posted to user@jmeter.apache.org by rats123 <ra...@tester.co.nz> on 2011/03/07 23:02:03 UTC
Aggregate results don't add up correctly
I ran a test for 1/2 an hour using the scheduler to start and stop the tests.
I know the test started on time and finished on records written to the
database. However when I multipled the aggregate_report_count by the average
and summed up the total I got a number greater thatn 1800 seconds (1/2 an
hour).
Any ideas what is happening here?
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Re: Aggregate results don't add up correctly
Posted by Felix Frank <ff...@mpexnet.de>.
On 03/10/2011 10:04 PM, rats123 wrote:
> I don't think there was any rounding error. The test was run for 1 hour as it
> was started and stopped using a scheduler.
>
> I multipled the sample count by the average and summed up the total. The
> total came to around 73 minutes.
>
> I've repeated this test for different durations and still get the same
> problem. Very strange ...
That's about 25%, which sounds like a lot.
Still - how many samples contribute to this figure? I'd like to get a
feel of just how wrong the results would need to be to throw off your
math like that.
Regards,
Felix
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Re: Aggregate results don't add up correctly
Posted by rats123 <ra...@tester.co.nz>.
I don't think there was any rounding error. The test was run for 1 hour as it
was started and stopped using a scheduler.
I multipled the sample count by the average and summed up the total. The
total came to around 73 minutes.
I've repeated this test for different durations and still get the same
problem. Very strange ...
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Re: Aggregate results don't add up correctly
Posted by Felix Frank <ff...@mpexnet.de>.
Sounds like a rounding error to me. What number did you get from the
multiplication?
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Re: Aggregate results don't add up correctly
Posted by rats123 <ra...@tester.co.nz>.
Hi,
Thanks for your post.
This test was just for 1 thread.
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Re: Aggregate results don't add up correctly
Posted by Felix Frank <ff...@mpexnet.de>.
On 03/07/2011 11:02 PM, rats123 wrote:
> I ran a test for 1/2 an hour using the scheduler to start and stop the tests.
> I know the test started on time and finished on records written to the
> database. However when I multipled the aggregate_report_count by the average
> and summed up the total I got a number greater thatn 1800 seconds (1/2 an
> hour).
>
> Any ideas what is happening here?
Hum. If you're running, say, 2 threads, wouldn't their times add up to
about twice your test duration?
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