object size

[shahab bakhtiyari]

Thanks Dimitry,  that was what I needed :)



Regards
--Shahab

On 11 May 2012 21:27, Dmitry Kurochkin <
dmitry.kurochkin at measurement-factory.com> wrote:

> shahab bakhtiyari <shahab371 at gmail.com> writes:
>
> > Thank you Dimitry
> >
> > well I dont think that I'll go for making my own distribution,  rather I
> > use the existing ones. But I need a little documentation about existing
> > ones,  like   zipf(64)  , I have no idea how large  it is? the  only
> thing
> > I found says :  "Zipf(1): *zipf(world_size)*" .  its alittle bit  unclear
> > for me,  is there any documentation for that?
> >
>
> A list of distributions and their parameters is available at [1].  You
> can find information on a particular distributions on wikipedia or other
> resources (e.g. Zipf's law [2]).  Note that Polygraph's implementation
> may not match exactly the mathematical formula.  You can test particular
> parameters for Polygraph distributions using distr-test tool (installed
> as polygraph-distr-test(1)), e.g. to see what values zipf(64) would
> produce run:
>
>  $ polygraph-distr-test --distr 'zipf(64)'
>
> It would generate 100000 values (by default) and print histogram, mean,
> min, max values and some other information.
>
> Regards,
>  Dmitry
>
> [1]
> http://www.web-polygraph.org/docs/reference/pgl/types.html#type:docs/reference/pgl/types/distr
> [2] http://en.wikipedia.org/wiki/Zipf's_law
>
> > On 11 May 2012 18:39, Dmitry Kurochkin <
> > dmitry.kurochkin at measurement-factory.com> wrote:
> >
> >> Hi Shahab.
> >>
> >> shahab bakhtiyari <shahab371 at gmail.com> writes:
> >>
> >> > Hi guys
> >> >
> >> > Yet another question for me(thank you very very much for previous
> >> > responses),
> >> >
> >> > I am wondering if the objects' size used in webaxe-1(or generally in
> all
> >> )
> >> > workload(s)  are realistic? or how much they are close to true size?
> >> >
> >> > I mean ,  using exp(4.5kb) with mean4.5kb and  max 53kb   for image
> >> >  objects  sounds too little, is'nt that?
> >> > or 300kb for downloads? am I totally wrong?
> >> >
> >>
> >> You may be right.  I do not think these sizes match average object or
> >> image on the Internet.  But usually what you are interested in is
> >> simulating *your* traffic properties.
> >>
> >> The numbers in the provided workloads should be a good starting point.
> >> But for best results you should create distributions that match your
> >> needs.  See [1] for details on user-defined distributions.  Creating
> >> proper distributions for your tests may be difficult.  You will need
> >> some existing data for it (e.g. Squid access logs).  Then you analyze it
> >> with some auxiliary tools to get percentages for distributions (for
> >> Squid access logs you might use access2pgl tool from
> >> src/tools/access2poly/).
> >>
> >> Regards,
> >>  Dmitry
> >>
> >> [1] http://www.web-polygraph.org/docs/reference/tabdistr.html
> >>
> >> > thank you
> >> > --Shahab
> >> > _______________________________________________
> >> > Users mailing list
> >> > Users at web-polygraph.org
> >> > http://www.web-polygraph.org/mailman/listinfo/users
> >>
>
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