RE: Why is the iSeries so slow

well, also Mike, there comes the question of proper sizing/config, tuning,
etc......



On Thu, 14 Aug 2003, Mike Haston ** Data wrote:

> Doesn't the fact that your iSeries is down an average of 10 minutes per year 
> versus your PC servers being down an average of 10 days a year make up for 
> some of it's "slowness"?
>
>
>
>
> -----Original Message-----
> From: Ken.Slaugh@xxxxxxxxxx [mailto:Ken.Slaugh@xxxxxxxxxx]
> Sent: Wednesday, August 13, 2003 10:21 PM
> To: Midrange Systems Technical Discussion
> Subject: Re: Why is the iSeries so slow
>
>
>
> Sorry you missed my earlier post Jim....
>
> Yes, the FTP problem on our iSeries seems to be resolved. As Marty had
> mentioned, he too had throughput problems on an iSeries that contained both
> an Ethernet and Token Ring adapter. His post caused me to disable the Token
> Ring on our system and run exclusively on the Ethernet adapter. Once done
> the FTP throughput was more reasonable. Not as fast as other platforms
> deliver data but fast enough to make the process acceptable.
>
> Unfortunately, this original post of mine did, in fact, result in an
> isolated and unique situation. Thus not really able to help the general
> iSeries community.
>
> IMHO, it did however stir up emotions showing some of the same narrow
> minded opinions of the midrange community.
>
> Ken Slaugh (707) 795-1512 x118
> Chouinard & Myhre, Inc.
> CA/400 Certified Specialist
> iSeries Network/MSE Administrator
> http://www.cm-inc.com/
>
>
>
>                       "Jim Franz"
>                       <franz400@xxxxxxxxxx        To:       "Midrange Systems 
> Technical Discussion"
>                       om>                          <midrange-l@xxxxxxxxxxxx>
>                       Sent by:                    cc:
>                       midrange-l-bounces@x        Subject:  Re: Why is the 
> iSeries so slow
>                       idrange.com
>
>
>                       08/13/2003 06:11 PM
>                       Please respond to
>                       Midrange Systems
>                       Technical Discussion
>
>
>
>
>
>
> 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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