jmeter-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Amit Kumar <amit.sr...@gmail.com>
Subject Re: Scenario: Login with 1000 Users. Is it required to create 1000 usernames and passwords?
Date Mon, 23 Dec 2013 06:19:29 GMT
Dear Adrian, Oscar,

Thanks for your suggestions. It helps. I will really appreciate if you give
me more information on this.


On Sat, Dec 21, 2013 at 8:22 PM, Oscar Nogueira Neto <
oscarnogueira@gmail.com> wrote:

> It also really depends on how your applications was coded. Some bullets to
> consider:
>
>    - Does it allows multiple sessions with the same user/pwd?
>    - Does it caches login information?
>    - Does it access the DB for every login attempt?
>
> If the application caches the login information then you'll probably get an
> false-positive result because your app won't hit the DB (LDAP or whatever)
> to log in the user.
>
> If you hit the DB for every login attempt, you'll probably get and
> false-negative result, because you may run into a hot block scenario if you
> use the same user, because every query will search for the information
> stored in the same data block, creating a false concurrency.
>
> In the bottom line, the best thing would be having more than 1,000 users,
> but if it's not possible know the possible issues. It will make it easier
> to determine if it is a false result.
>
> Best regards,
> Oscar
> http://jmeter.com.br
>
> __
> *Oscar Nogueira Neto*
> http://www.oscarnogueira.com
> @oscarnogueira
>
>
> On Fri, Dec 20, 2013 at 7:08 AM, Adrian Speteanu <asp.adieu@gmail.com
> >wrote:
>
> > Hi,
> >
> > I would expect you would require more than 1,000. If your requirements
> say
> > that the app needs 1000 concurrent users, then you'd expect to have 1000
> > concurrent users at any given time out of a larger pool. The exact ratio,
> > live/total users, depends on specifics (how long is a single user
> session,
> > how many users do you expect to have at peak even if they're not active
> > etc).
> >
> > You should consider other details, such as how often should you recycle
> the
> > users that are active. It doesn't need to be realistic, but the generated
> > session pool should not surpass real life values (consider the time that
> > sessions are kept on the server side, the more unique sessions you
> > generate, the memory requirements increases).
> >
> > This affects how you configure the Cookie Manager (maybe you'd want to
> keep
> > cookies instead of deleting them after each thread run) or your test
> > script, maybe you should make fewer logins in your script to simulate
> > real-life scenarios accurately. You have to decide that considering the
> > specifics of the app under test.
> >
> > Adrian S
> >
> >
> > On Fri, Dec 20, 2013 at 6:52 AM, Amit Kumar <amit.srpce@gmail.com>
> wrote:
> >
> > > Dear All:
> > >
> > > I have a query. If I want to perform load testing for 1000 users in
> > JMeter,
> > > is it required to create 1000 usernames and passwords to get realistic
> > > result?
> > >
> > > --
> > > Thanks and Regards,
> > > Amit
> > >
> >
>



-- 
Thanks and Regards,
Amit

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message