Re: Why is the iSeries so slow

["Jim Franz" <franz400@xxxxxxxxxxxx>]

I was hoping this thread would lead to more "how to" program/tune for
performance, so the iSeries processes the heavy load more efficiently.
With so many subject areas, so many types of serving, it's been
too much to handle in one thread. We started with slow FTP transmission.
There were some good suggestions. Did we solve the problem?
btw-my own observation is that more often than not the performance issues
over lan/wan are the network itself along with the iSeries line and
interface config.
(my last big performance hunt, with Client Access users timing out turned
out to be an email relay running in the local lan, flooding the network)
after days
of net admin complaining about the iSeries...)
jim
----- Original Message -----
From: "Nathan M. Andelin" <nandelin@xxxxxxxxxxxxxxxxxxx>
To: <midrange-l@xxxxxxxxxxxx>
Sent: Wednesday, August 13, 2003 7:29 PM
Subject: Re: Why is the iSeries so slow


> Buck,
>
> Let me get this straight.  By front-ending the iSeries with a PC,  you
only
> see a 10% performance improvement?  Why add the PC to the configuration?
>
> Actually, I think you're saying that the CPU in the PC is faster than the
> CPU in the 820, which is probably true.  My question is when given a
complex
> Web workload, which would perform better?
>
> Of course, if you were using efficient native iSeries interfaces rather
than
> Java, you'd probably be seeing 500% to 1000% performance improvement ;-)
>
> Nathan M. Andelin
> www.relational-data.com
>
>
> > From: "Buck" <buck.calabro@xxxxxxxxxxxx>
> > I have a web application that's about to get off the
> > ground here, and with the exact same iSeries back
> > end (that's where our OLTP runs, as does Scott's
> > and yours), we get roughly 10% better performance
> > running Tomcat 4.1.24 on a PC than on our 820
> > 24AA.  On the same network.  With the exact same
> > Java servlets.
>
>
>
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