From conlon at yassl.com  Fri Jul  1 18:12:46 2011
From: conlon at yassl.com (Chris Conlon)
Date: Fri, 1 Jul 2011 12:12:46 -0600
Subject: Example of SSL workload
In-Reply-To: <877h83uf9j.fsf@gmail.com>
References: <FB0B1E33-B53C-4248-B061-B873B12C5695@yassl.com>
	<877h83uf9j.fsf@gmail.com>
Message-ID: <88D3993F-B0F3-4F61-9D36-08688CD4FC31@yassl.com>

Hi Dmitry,

On Jun 30, 2011, at 4:27 PM, Dmitry Kurochkin wrote:

> Hi Chris.
> 
> On Thu, 30 Jun 2011 16:08:49 -0600, Chris Conlon <conlon at yassl.com> wrote:
>> Hi,
>> 
>> Does anyone have an example of a workload that generates HTTPS traffic?
>> 
> 
> Attached is a simple SSL workload.  You will need set the SSL
> configuration file in the workload.  Web Polygraph SSL-related
> documentation and a sample SSL configuration file are available at [1]
> and [2].

Thanks, that helped understand a how things should be used.  I got it to work just between the client and server, but when I stick a squid proxy in between, I get an "access forbidden to an anonymous robot" error.  I'm guessing there's some way I have to specify a client certificate for the robots.

Regards,
Chris

> 
> Regards,
>  Dmitry
> 
> [1] http://www.web-polygraph.org/docs/reference/models/ssl.html
> [2] http://www.web-polygraph.org/docs/reference/models/myssl.conf
> 
>> Thanks,
>> Chris
>> _______________________________________________
>> Users mailing list
>> Users at web-polygraph.org
>> http://www.web-polygraph.org/mailman/listinfo/users
> <simple_ssl.pg>



From dmitry.kurochkin at measurement-factory.com  Fri Jul  1 18:24:40 2011
From: dmitry.kurochkin at measurement-factory.com (Dmitry Kurochkin)
Date: Fri, 01 Jul 2011 22:24:40 +0400
Subject: Example of SSL workload
In-Reply-To: <88D3993F-B0F3-4F61-9D36-08688CD4FC31@yassl.com>
References: <FB0B1E33-B53C-4248-B061-B873B12C5695@yassl.com>
	<877h83uf9j.fsf@gmail.com>
	<88D3993F-B0F3-4F61-9D36-08688CD4FC31@yassl.com>
Message-ID: <87wrg1uadz.fsf@gmail.com>

Hi Chris.

On Fri, 1 Jul 2011 12:12:46 -0600, Chris Conlon <conlon at yassl.com> wrote:
> Hi Dmitry,
> 
> On Jun 30, 2011, at 4:27 PM, Dmitry Kurochkin wrote:
> 
> > Hi Chris.
> > 
> > On Thu, 30 Jun 2011 16:08:49 -0600, Chris Conlon <conlon at yassl.com> wrote:
> >> Hi,
> >> 
> >> Does anyone have an example of a workload that generates HTTPS traffic?
> >> 
> > 
> > Attached is a simple SSL workload.  You will need set the SSL
> > configuration file in the workload.  Web Polygraph SSL-related
> > documentation and a sample SSL configuration file are available at [1]
> > and [2].
> 
> Thanks, that helped understand a how things should be used.  I got it
> to work just between the client and server, but when I stick a squid
> proxy in between, I get an "access forbidden to an anonymous robot"
> error.  I'm guessing there's some way I have to specify a client
> certificate for the robots.
> 

You should either configure the proxy to allow unauthenticated access or
set valid credentials for Web Polygraph Robots.  Web Polygraph
authentication is documented at [1].

Regards,
  Dmitry

[1] http://www.web-polygraph.org/docs/userman/auth.html

> Regards,
> Chris
> 
> > 
> > Regards,
> >  Dmitry
> > 
> > [1] http://www.web-polygraph.org/docs/reference/models/ssl.html
> > [2] http://www.web-polygraph.org/docs/reference/models/myssl.conf
> > 
> >> Thanks,
> >> Chris
> >> _______________________________________________
> >> Users mailing list
> >> Users at web-polygraph.org
> >> http://www.web-polygraph.org/mailman/listinfo/users
> > <simple_ssl.pg>
> 


From eacg at cin.ufpe.br  Wed Jul 13 20:52:40 2011
From: eacg at cin.ufpe.br (Erico Augusto Cavalcanti Guedes)
Date: Wed, 13 Jul 2011 17:52:40 -0300
Subject: How to measure hit ratio
Message-ID: <CAKPcEv3mfUZZJA6ysgn_UyZprxbbiU0rnMc-JGMu5L56RhRj3Q@mail.gmail.com>

Dears,

is there a way to measure the hit ratio of a cache experiment using
polygraph tools, resources...
I'm loading a cache cluster of 4 nodes, and find a way to process squid
access.log files together to establish  isn't a trivial task.

Lab is composed of 6 machines: One to execute polygraph-server, another to
polygraph-client and 4 on cache cluster. If there is a way to gather hit
ratio on polygraph-client machine, I'll spend less time and, who knows,
watch Brazilian soccer team tonight! It's missing 4 hours to match start!
I'm looking for the solution in Google, Search PG docs and with you...

Best regards,

Erico.
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From dmitry.kurochkin at measurement-factory.com  Wed Jul 13 21:27:43 2011
From: dmitry.kurochkin at measurement-factory.com (Dmitry Kurochkin)
Date: Thu, 14 Jul 2011 01:27:43 +0400
Subject: How to measure hit ratio
In-Reply-To: <CAKPcEv3mfUZZJA6ysgn_UyZprxbbiU0rnMc-JGMu5L56RhRj3Q@mail.gmail.com>
References: <CAKPcEv3mfUZZJA6ysgn_UyZprxbbiU0rnMc-JGMu5L56RhRj3Q@mail.gmail.com>
Message-ID: <87ipr5yipc.fsf@gmail.com>

Hi Erico.

On Wed, 13 Jul 2011 17:52:40 -0300, Erico Augusto Cavalcanti Guedes <eacg at cin.ufpe.br> wrote:
> Dears,
> 
> is there a way to measure the hit ratio of a cache experiment using
> polygraph tools, resources...

Sure.

> I'm loading a cache cluster of 4 nodes, and find a way to process squid
> access.log files together to establish  isn't a trivial task.
> 
> Lab is composed of 6 machines: One to execute polygraph-server, another to
> polygraph-client and 4 on cache cluster. If there is a way to gather hit
> ratio on polygraph-client machine, I'll spend less time and, who knows,
> watch Brazilian soccer team tonight! It's missing 4 hours to match start!
> I'm looking for the solution in Google, Search PG docs and with you...
> 

You should start with reading [1] and [2].  That should give you
information on how to run basic tests.  Hit ratio is reported on client
console during the test, see [3] for console output format.  A more
detailed information can be obtained from Polygraph logs (--log option
for polygraph-client(1) and polygraph-server(1)).  The simplest way to
do that is using polygraph-reporter(1) tool, documented at [4].  Just
run the reporter on both client and server logs, open index.html page in
the generated report, and click "Hit ratios" link.

While 4 hours should be enough to run some basic tests, I am afraid it
would take much more time to create and run a complex workload.

Note that to test multiple proxies you need to set them through PGL
Robot.*proxies fields, --proxy command line option accepts only a single
proxy address.  Moreover proxy selection is sticky, which means that
each Robot selects a proxy on startup and uses it during the entire
test.  That means you need to use multiple Robots to test several
proxies.  See [5] for more information on PGL Robot.*proxies fields.

I hope this would help and keep you busy till the soccer match :)

Regards,
  Dmitry

[1] http://www.web-polygraph.org/test/docs/userman/start.html
[2] http://www.web-polygraph.org/test/docs/userman/simple.html
[3] http://www.web-polygraph.org/test/docs/reference/output/console.html
[4] http://www.web-polygraph.org/test/docs/userman/reporting.html
[5] http://www.web-polygraph.org/test/docs/reference/pgl/types.html#type:docs/reference/pgl/types/Robot

> Best regards,
> 
> Erico.
> _______________________________________________
> Users mailing list
> Users at web-polygraph.org
> http://www.web-polygraph.org/mailman/listinfo/users


From aragavan at cisco.com  Wed Jul 20 13:58:18 2011
From: aragavan at cisco.com (Ragavan Ambighananthan)
Date: Wed, 20 Jul 2011 14:58:18 +0100
Subject: trace replay feature and cookies
In-Reply-To: <87ipr5yipc.fsf@gmail.com>
References: <CAKPcEv3mfUZZJA6ysgn_UyZprxbbiU0rnMc-JGMu5L56RhRj3Q@mail.gmail.com>
	<87ipr5yipc.fsf@gmail.com>
Message-ID: <1311170298.26682.4.camel@ragavan-linux-desktop>

Hi 
I am using the trace replay functionality of web polygraph and I am
using urls from our production access logs.

However, at some point WP client aborts with the following emssage.

025.69| fyi: changing populus factor level from 9.17% to 9.26%
025.69| script output: small sample mean response time is 148msec
httpHdrs.cc:433: (s0) Success

Client.cc:1009: assertion failed: '!info.cookies'
Aborted

Is this anything related to cookies and how to stop this from
happening ?

I have attached the work load I was using. Any help would be
appreciated.

Regds
Ragavan
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From dmitry.kurochkin at measurement-factory.com  Wed Jul 20 14:20:57 2011
From: dmitry.kurochkin at measurement-factory.com (Dmitry Kurochkin)
Date: Wed, 20 Jul 2011 18:20:57 +0400
Subject: trace replay feature and cookies
In-Reply-To: <1311170298.26682.4.camel@ragavan-linux-desktop>
References: <CAKPcEv3mfUZZJA6ysgn_UyZprxbbiU0rnMc-JGMu5L56RhRj3Q@mail.gmail.com>
	<87ipr5yipc.fsf@gmail.com>
	<1311170298.26682.4.camel@ragavan-linux-desktop>
Message-ID: <87aac9uj7a.fsf@gmail.com>

Hi Ragavan.

On Wed, 20 Jul 2011 14:58:18 +0100, Ragavan Ambighananthan <aragavan at cisco.com> wrote:
> Hi 
> I am using the trace replay functionality of web polygraph and I am
> using urls from our production access logs.
> 
> However, at some point WP client aborts with the following emssage.
> 
> 025.69| fyi: changing populus factor level from 9.17% to 9.26%
> 025.69| script output: small sample mean response time is 148msec
> httpHdrs.cc:433: (s0) Success
> 
> Client.cc:1009: assertion failed: '!info.cookies'
> Aborted
> 
> Is this anything related to cookies and how to stop this from
> happening ?
> 

This is definitely a bug.  I opened bug #813532 [1] for this problem.

Do I understand it correctly that Polygraph clients talk to foreign
servers (i.e. real web servers on the internet)?  If that is the case,
the bug may be that some replies have cookies and Polygraph client does
not expect it.  But this is just a guess.

Unfortunately, I can not provide you a workaround until I investigate
the issue further.

Can you please add Web Polygraph version information to the bug report?
Other additional info may be useful as well.

Regards,
  Dmitry

[1] https://bugs.launchpad.net/polygraph/+bug/813532

> I have attached the work load I was using. Any help would be
> appreciated.
> 
> Regds
> Ragavan


From aragavan at cisco.com  Wed Jul 20 14:36:55 2011
From: aragavan at cisco.com (Ragavan Ambighananthan)
Date: Wed, 20 Jul 2011 15:36:55 +0100
Subject: trace replay feature and cookies
In-Reply-To: <87aac9uj7a.fsf@gmail.com>
References: <CAKPcEv3mfUZZJA6ysgn_UyZprxbbiU0rnMc-JGMu5L56RhRj3Q@mail.gmail.com>
	<87ipr5yipc.fsf@gmail.com>
	<1311170298.26682.4.camel@ragavan-linux-desktop>
	<87aac9uj7a.fsf@gmail.com>
Message-ID: <1311172615.26682.12.camel@ragavan-linux-desktop>

Thanks for yor response Dmitry.
The polygraph version is 4.4.0.

Well, even though I am using real urls, I have a config line (cache_peer
10.10.1.80  parent 9090 0 no-query originserver) in our squid proxy
which will fetch contents from WP server instead of live sites.


Regds
Ragavan
-----Original Message-----
From: Dmitry Kurochkin <dmitry.kurochkin at measurement-factory.com>
To: aragavan at cisco.com
Cc: users at web-polygraph.org
Subject: Re: trace replay feature and cookies
Date: Wed, 20 Jul 2011 18:20:57 +0400


Hi Ragavan.

On Wed, 20 Jul 2011 14:58:18 +0100, Ragavan Ambighananthan <aragavan at cisco.com> wrote:
> Hi 
> I am using the trace replay functionality of web polygraph and I am
> using urls from our production access logs.
> 
> However, at some point WP client aborts with the following emssage.
> 
> 025.69| fyi: changing populus factor level from 9.17% to 9.26%
> 025.69| script output: small sample mean response time is 148msec
> httpHdrs.cc:433: (s0) Success
> 
> Client.cc:1009: assertion failed: '!info.cookies'
> Aborted
> 
> Is this anything related to cookies and how to stop this from
> happening ?
> 

This is definitely a bug.  I opened bug #813532 [1] for this problem.

Do I understand it correctly that Polygraph clients talk to foreign
servers (i.e. real web servers on the internet)?  If that is the case,
the bug may be that some replies have cookies and Polygraph client does
not expect it.  But this is just a guess.

Unfortunately, I can not provide you a workaround until I investigate
the issue further.

Can you please add Web Polygraph version information to the bug report?
Other additional info may be useful as well.

Regards,
  Dmitry

[1] https://bugs.launchpad.net/polygraph/+bug/813532

> I have attached the work load I was using. Any help would be
> appreciated.
> 
> Regds
> Ragavan


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