[Tsung] Re: Calculating tp 99 value

[sjagpal at cise.ufl.edu]

Re: Calculating tp 99 value (Nicolas Niclausse)

tp99 is minimum time under which 99% of the requests were completed. Eg:
If I have a session with just one http GET request and I am making 1000
get requests. I would typically record the time each request takes. If 99%
of the calls returned in a time under 2 secs, my tp99 = 2 secs. This way,
I eliminate the peaks that are infrequent.

The problem that I am facing here is that since tsung calculates mean resp
time every 10 secs, I am unable to get accurate values for tp99. Even if
one call in the 10 sec interval is taking a lot of time, the mean gets a
high value too. As a result my tp99 value is not accurate.

Any ideas?

Thanks a lot!
Shweta

> I am using tsung to do performance testing and need to calculate the tp99
>  value. However, I am finding it hard to understand the structure of the
> log files and hence am not able to understand how the data can be used to
>  calculate tp99 values. Any help will be really appreciated.
>
> Thanks!
>
>
>