Re: polymix-3.pg

On Fri, 30 Sep 2011 23:59:18 +0400, Dmitry Kurochkin <[email protected]> wrote:
> Hi Sarah.
> 
> On Fri, 30 Sep 2011 14:08:05 -0400, Sarah Milani <[email protected]> wrote:
> > Hi Everbody
> > 
> > *i plan to use polymix-3.pg to run a performance test of my squid proxy.
> > **I am using the same machine to run  client and server, (*initially)* in
> > the same proxy **network .
> 
> PolyMix are complex workloads with many Robots and Servers.  Usually, a
> single machine is not enough to run high load tests because Polygraph
> reaches CPU or network limits.
> 
> Consider using the latest version of PolyMix workloads - PolyMix-4.
> 
> > Before *run polymix, i already read this :
> > http://www.measurement-factory.com/docs/PolyMix-3/ , however i still have
> > some questions :
> > 
> 
> You should also read PolyMix-3 documentation at [1].
> 
> Also, please keep in mind that PolyMix documentation was written for an
> old Polygraph version.  Many new features were added to Polygraph since
> then.  In particular Polygraph client and server now create required
> aliases on start (though, client and server address creation may
> conflict if both are run on the same system, use the aka tool to create
> them manually in this case).
> 
> To set PolyMix-3 parameters, you should copy polymix-3.pg from Polygraph
> installation (e.g. Debian package has it in
> /usr/share/polygraph/workloads/) or tarball somewhere and edit it.
> 
> > 
> > 1 - Where i set objects sizes (html, figures and download) ?
> 
> Everything is configured in the workload.  Polimix-3.pg includes other
> workloads which have all the details.
> 
> Object sizes are defined in contents.pg.  But you should not edit it
> directly.  Instead copy polymix-3.pg somewhere and put all changes
> there.  You can set PGL fields like:
> 
>   ...
>   // include all the boring details
>   #include "polymix-3-guts.pg"
> 
>   // customize some fields
>   cntImage.size = exp(10KB);
>   ...
> 

Sorry, this would not work.  Since cntImage is _used_ in
polymix-3-guts.pg, you cannot customize it after use.  The Server agent,
for example, will retain the wring/old settings.  There are no pointers
in PGL.

If guts customization is needed, a better approach is to literally
include the polymix-3-guts.pg file (i.e., insert its contents) into your
copy of polymix-3.pg and then edit whatever is needed.

Regards,
  Dmitry

> > 2 - What variables must be defined? And which files? (cause i set up only
> > polymis-3.pg)
> 
> PolyMix workloads have few parameters that you need to set.  Most have
> appropriate default values.  All undefined parameters are in
> polymix-3.pg and have comments.
> 
> > 3 - Is there any additional procedures that must be executed before the
> > polygraph?
> > 
> 
> You need to configure routes on the proxy so it can reach Polygraph
> Robots and Servers.  If you run without a proxy, routing needs to be
> configured on client and server systems.
> 
> You may also need to adjust system configuration (e.g. network buffers
> size, open file limit).
> 
> Regards,
>   Dmitry
> 
> [1] http://www.web-polygraph.org/docs/workloads/polymix-4/
> 
> > 
> > Best Regards
> > 
> > Sarah Milani
> > 
> > 
> > -- 
> > Atenciosamente,
> > 
> > Sarah Milani
> > 
> > "Tú te tornas eternamente responsável por aquilo que clicas"
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