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From "Michael McDonnell" <bzaks1...@gmail.com>
Subject Re: Distributed Testing: Not actually creating load?
Date Fri, 06 Jun 2008 14:50:41 GMT
One would think so, but my response times are terrible, I'm wondering if it
has anything to do with the fact that its a 1st gen p4.
(Ubuntu Hardy, 1.5 Gig PC3200 RAM)

On Fri, Jun 6, 2008 at 9:44 AM, sebb <sebbaz@gmail.com> wrote:

> Yes, 300 users should not be a problem as a single JMeter client
> should be able to handle that.
>
> On 06/06/2008, Michael McDonnell <bzaks1424@gmail.com> wrote:
> > That makes sense. I'll give it a go. (We're pretty sure there's no bottle
> >  neck passing things, they do it every 100 samples, and this is over a
> 100
> >  MB/s net. I'm only trying to run 300 users, so they should be able to
> >  perform well over a 10 MB/s
> >
> >
> >  On Fri, Jun 6, 2008 at 9:27 AM, sebb <sebbaz@gmail.com> wrote:
> >
> >  > In client-server mode, only the test plan is sent from the client to
> >  > the server(s).
> >  >
> >  > Any additional files - e.g. CSV input files - need to be present on
> >  > the server host in the location specified by  the test plan.
> >  >
> >  > Sample data is returned to the client, and processed/stored by the
> client.
> >  > This can become a bottleneck at the client - both for JMeter itself,
> >  > and for the network connection - under high loads.
> >  >
> >  > Data files are best randomised before use.
> >  > Likewise, if you want to run with different data on different hosts,
> >  > then create different data files for each host (but you can use the
> >  > same name).
> >  >
> >  > On 06/06/2008, Michael McDonnell <bzaks1424@gmail.com> wrote:
> >  > > How did you randomize the data from the CSVs? (if I may ask)
> >  > >
> >  > >  Also, I'm dealing with a lot of optimistic locking issues which
> would
> >  > only
> >  > >  occur if each csv is doing the EXACT same thing at the exact same
> time
> >  > >  (which is completely likely)
> >  > >
> >  > >
> >  > >  On Thu, Jun 5, 2008 at 9:54 PM, Ryan Dooley <ryan.dooley@gmail.com
> >
> >  > wrote:
> >  > >
> >  > >  > I had a similar experience the first time.  Turns out that the
> data I
> >  > >  > wanted
> >  > >  > to test with (HTTP POSTs) has to be put on each remote.  I also
> had a
> >  > >  > process to randomize the data when transferred to the remotes.
 I
> >  > finally
> >  > >  > got the load up high enough across 10 machines like yours.
> >  > >  >
> >  > >  > The test harness I had was pretty simple:  post these things to
> this
> >  > url.
> >  > >  >
> >  > >  > On Thu, Jun 5, 2008 at 5:19 PM, Michael McDonnell <
> >  > bzaks1424@gmail.com>
> >  > >  > wrote:
> >  > >  >
> >  > >  > > We're running a distributed test (roughly 7 remote
> workstations) on
> >  > a
> >  > >  > > pretty
> >  > >  > > hefty box (8 cores, 32 gigs ram.... etc...)
> >  > >  > >
> >  > >  > > However, something seems to be going wrong... perhaps its
> because
> >  > I'm
> >  > >  > > crossing linux and windows platforms to try to do the testing?
> >  > >  > >
> >  > >  > > We're load testing a web application, so primarily, the only
> work
> >  > we're
> >  > >  > > doing is http requests (there are a few "java requests" that
> >  > actually is
> >  > >  > an
> >  > >  > > app I created to make webservice calls, but we'll get to that
> later)
> >  > >  > >
> >  > >  > > However, when we view the transactions in the database, they
> are
> >  > >  > extremely
> >  > >  > > low. (frighteningly low).
> >  > >  > >
> >  > >  > > Then we run the test from a single user work station (same
> test, 300
> >  > >  > users
> >  > >  > > doing work) and our results come back fantastically!
> >  > >  > >
> >  > >  > > Now granted: I guess the big deal is this: when the app uses
a
> csv
> >  > in
> >  > >  > > distributed mode, does each slave utilize the the same csv
in
> the
> >  > same
> >  > >  > > order
> >  > >  > > ? or is there a sort of "break up" so that no two slaves are
> using
> >  > the
> >  > >  > same
> >  > >  > > line in the csv?
> >  > >  > >
> >  > >  > > I'm sorry for what may be dumb questions... but we're coming
> down to
> >  > a
> >  > >  > > tight
> >  > >  > > deadline, and the distributed testing is not giving us good
> results
> >  > where
> >  > >  > > as
> >  > >  > > the local testing is.
> >  > >  > >
> >  > >  > > Thanks for all your help in advance.
> >  > >  > >
> >  > >  > > Michael
> >  > >  > >
> >  > >  >
> >  > >
> >  >
> >
> > > ---------------------------------------------------------------------
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> >  >
> >  >
> >
>
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