Thanks Mike & Stuart for your replies. So its pretty clear that
for the purpose of finding the bottle neck in an application we
need to load the app by Jmeter and use the Profiling tool for
finding the bottleneck.
So I will start loading a Java app with Jmeter. Yes, I can write
Java classes. So, let me know where and what do I have to do to
understand how to write a sampler and samplercontroller. How does
Jmeter help me in doing so? Can I subclass these from Jmeter and
start writing my code?
Please give me a brief outline and I will start with this. in fact
Mike has already done this JProbe+Jmeter thing. So I will need to
follow the steps. I couldnt get the JProbe licence. I got the OptimizeIt
licence though. So I will be usimg Jmeter+OptimizeIt.
Thanks again and keep writing,
Soumya(Som)
-----Original Message-----
From: Mike Stover [mailto:[EMAIL PROTECTED]]
Sent: Friday, June 15, 2001 9:51 AM
To: [EMAIL PROTECTED]
Subject: Re: Hi All, What to do in the beginning
On Friday 15 June 2001 13:42, Stuart Skinner wrote:
> Hi souyma
>
> As far as i'm aware JMeter won't do this sort of thing for you. JMeter is
> capable of showing how your application will scale under load but it will
> give you little indication as to where bottelnecks that prevent scaling
> occur. You should look into using a profiling tool such as OptimizeIt or
> JProbe (possibly in conjunction with JMeter to load the system whilst
> testing).
This is correct. I have used JMeter to load a system while running JProbe
to
find where bottlenecks were. JMeter is perfect for that purpose. However,
JMeter currently only supports http, JDBC, and FTP (and somewhere I have
SMTP
classes lying around that I haven't merged yet).
However, if you can write java, it's not so hard to add your own classes to
do new stuff. You would have to write, at a minimum, a sampler (which does
the actual calling of your java objects), a controller (which would hold
configuration information and create Entry's to be "executed" by your
sampler), and a GUI for your controller. Most likely, you'd also have to
create some ConfigElement classes for greater flexibility.
It's not as hard as it sounds once you understand what a SamplerController
does, and what a Sampler does. Is this something you want to tackle? If
so,
I'm willing to help.
-Mike
>
> Stu
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> Sent: Friday, June 15, 2001 2:32 PM
> To: [EMAIL PROTECTED]
> Subject: RE: Hi All, What to do in the beginning
>
>
> How you all doing? I have pinpointed my requirements for now with Jmeter.
I
> gotto test Java applications(lets for now say its not an web app). For
> example suppose a Java app is having n number of objects. How, by using
> Jmeter I can understand which object is creating the bottleneck in the
> entire app?
>
> If somebody is giving me a testscript, pls. briefly explain how to connect
> that with Jmeter and run. As I told earlier I am not very good in J2EE
> technologies.I dont know XML. I will learn the relevant parts for testing
> Jmeter.
>
> Thanks and looking forward to hear.
>
> Soumya Bhattacharyya
>
>
>
>
> -----Original Message-----
> From: Mike Stover [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, June 12, 2001 2:51 PM
> To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
> Subject: Re: Hi All, What to do in the beginning
>
> On Tuesday 12 June 2001 14:33, [EMAIL PROTECTED] wrote:
> > Hi All,
> >
> > I have been assigned to learn and use Jmeter for my corporation.
Ultimate
> > requirement is to test JMS framework as is the web services framework. I
>
> am
>
> > basically a TOOL developer who knows Java but is not very thourough in
>
> J2EE
>
> > stuff(just learning).
> >
> > I have gone thru the info that was available on the net about Jmeter.
Its
> > theoritically fine, but I think I need more info to start taking the
> > first steps. For eg. I would like to do the following first :
> >
> > 1. Test a database
>
> Ok, JMeter supports JDBC, but it's currently broken. I haven't looked
into
> the problem as I have no use for such database testing, but I would be
glad
> to point you in the right direction. Here, for example is a testscript
> that
> demostrates how you would setup jmeter to test a database (you'll have to
> sub
> in appropriate values - but load it first and change the values in
JMeter):
>
> <?xml version="1.0"?>
>
> <TestPlan>
> <threadgroups>
> <ThreadGroup name="ThreadGroup" numThreads="1">
> <controllers>
> <JdbcTestSample
> type="org.apache.jmeter.protocol.jdbc.control.JdbcTestSample"
> name="Database Testing">
> <defaultDb>
> <ConfigElement type="org.apache.jmeter.protocol.jdbc.config.DbConfig">
> <property name="password">root</property>
> <property name="url">192.168.1.1</property>
> <property name="sub_protocol">mysql</property>
> <property name="driver">org.gjt.mm.mysql.Driver</property>
> <property name="username">root</property>
> </ConfigElement></defaultDb>
> <defaultPool>
> <ConfigElement type="org.apache.jmeter.protocol.jdbc.config.PoolConfig">
> <property name="use">1000</property>
> <property name="num_connections">10</property>
> </ConfigElement></defaultPool>
> <sqlList>
> <ConfigElement type="org.apache.jmeter.protocol.jdbc.config.SqlConfig">
> <property name="name">Sql Query</property>
> <property name="query">select * from tablename</property>
> </ConfigElement>
> <ConfigElement type="org.apache.jmeter.protocol.jdbc.config.SqlConfig">
> <property name="name">Sql Query</property>
> <property name="query">select column1,column2 from table2 where
> column1='foo'</property>
> </ConfigElement>
> </sqlList>
> <configElements>
> </configElements>
> <controllers>
> </controllers>
> </JdbcTestSample>
>
> </controllers>
> <configElements>
> </configElements>
> <timers>
> </timers>
> <listeners>
> <JMeterComponent type="org.apache.jmeter.visualizers.GraphModel"
> name="Graph
>
> Results"/>
> </listeners>
> </ThreadGroup>
>
> </threadgroups>
> <configElements>
> </configElements>
> </TestPlan>
>
> When this gets run, I think an error occurs (people out there have
reported
> errors, I don't know if they've fixed them or not).
>
> > 2. Test a java object
>
> Not supported, but you could fairly easily write your own controllers to
do
> it. The tricky part comes in when you decide you want to write as few
> custom
> controllers as possible to test as many different and varied objects as
> possible.
>
> > 3. Test a Servlet
>
> As in HTTP testing? JMeter does this pretty well. Again, I could send
you
> a
> script to get you started. Let me know if that's necessary.
>
> > I would like to have an initial idea how to test them stepwise. So, if
> > someone has some time and let me know how to go about it, will feel
> > great.
>
> Well, keep asking questions, and I'll see what I can do.
>
> > Thanks,
> >
> > Som
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
--
Mike Stover
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