On 21/03/2008, at 4:53 AM, David Jencks wrote:
On Mar 20, 2008, at 10:28 AM, newbie-gero wrote:
Hi lists,
i have read up about the Geronimo and it seems to be a very good
application
server. However i like to check the performance of Geronimo.
So i like to ask all of you what are the ways to check for the
scalability,
invocation speed, how much it can handle multi threaded functions,
the
transport speed. Therefore i like to know what are the test tools
i can use
or implement or how to go about it.
Do any of you have done these before?
Well, Matt Hogstrom did a lot of work along these lines but he's
not very active at the moment. We have a benchmarking application
called daytrader that can be used to test a lot of functionality.
However IMO it is rather difficult to get useful comparative
information between app servers without an enormous amount of work
and hardware. Basically with tuning any well-known app server goes
pretty darn fast, and in any particular benchmarketing study
usually the one that the organization that does the study is more
familiar with wins due to better tuning. I think the main use of
apps like this is to pinpoint specific performance bottlenecks and
provide a relatively controlled environment to try out solutions
for them.
some of the things you are likely to need to get meaningful results:
one or more real servers (multiprocessor multicore)
lots of client machines
a c-based test harness (Matt couldn't find a java based test
harness that could keep up with the server)
FWIW, you may want to give a try to tsung, http://tsung.erlang-
projects.org/. It is implemented in Erlang and, hence, can simulate a
ludicrously large number of clients from a single host.
Thanks,
Gianny
Kevan's provided links to a couple of Matt's reports. At one time
geronimo 2.x had severe performance problems looking up Datasources
in jndi, but this has been fixed. I'm not sure if the latest
report is before or after this fix.
thanks
david jencks
Thanks in advance
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