Maxim Berkultsev wrote:
Hi Matt,
thanks a lot for the reply. A few more questions...
The Y-Axis represents transactions per second.
What is this value - is it a general magnitude like time or is it related to
the type of request which is under study, (i.e. number of JDBCRead
transactions per second)?
All the TPS metrics were gathered from the client. The goal was to get the
server to 100% CPU utilization.
Before your reply I suppose that Web Server Manager portlet was used to
perform monitoring, please see the post
http://www.mail-archive.com/[email protected]/msg18979.html
No, the results are based on external requests per second by the client. Not by
the servlet mentioned in the article.
So the question is - do you use any additional client application (not
included in Daytrader), which provides workload for Geronimo?
I use a load driver call WebSphere Studio Simulator. This is a tool that I
have had setup on my test environment for some time. At some point I'd like to
move to JMeter or some other load driver but I found the Java based load
generators take too much compute resource so right now I'm using a C based one.
Thank you.
--
Best regards,
Maxim Berkultsev, Intel Middleware Products Division
Matt Hogstrom wrote:
Hi Maxim,
Comments inline...
Maxim Berkultsev wrote:
Hello all,
I've looked through Daytrader workload results and analysis for Geronimo
published at
http://www-1.ibm.com/support/docview.wss?uid=swg27006724
For the bar diagrams, which show Geronimo and 'target' server indicators,
immediate questions are:
- what is the measure unit for values in Y-axis?
The Y-Axis represents transactions per second.
- how are the values for 'target' performance received?
One problem with performance measurments is that they typically incite many
people to claim victory or cry foul depending on the results. This is also
complicated by the fact that many commercial products have a no benchmark
publish clause in their licenses. In order to have something to compare
Geronimo to as well as avoid the inevitable fallout of naming a comparison
point I did a series of measurments on other Open Source and commercial
AppServer products. I thook these results and created the competitive
target metric.
The competitive target metric is simply my estimation of a respectable
performance measurement. Meaning, as we achieve that metric one should be
happy
with the results.
Note that these numbers are pretty old. I have a new set of data that I've
been saying will be out for a while. I guess its time to actually make that
happen.
So, for purposes of consumption I would wait a few days for the new report
to surface. We'll post it on our site.
Also, could someone clarify if the performance data was collected on a
client or a server side?
All the TPS metrics were gathered from the client. The goal was to get the
server to 100% CPU utilization.
Also, if you guys are willing we could use some of the newer Potomac
3.6Ghzchips:)
