RE: IFS Performance

No definition of network size was given for the model 270 providing poor 
performance so here is my story.  A model 270 supporting 20 users running 
interactive applications and the same number using IFS for file serving.  The 
main application on the iSeries is an inventory system handling millions of 
items.  An Intel based database program (contracts) writes files to IFS to be 
processed by the iSeries (inventory), users running the database application 
write files to IFS to be processed by the database. 300+ files have been 
handled today.  If you did not notice the drive name you would never know it 
was an iSeries IFS folder.  The issue I am having is XP now thinks some files 
are in use and will not delete the file and folder, and only on one drive.  I 
have to go through the ops navigator or work with folders to delete the items.

Jon Giles 

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] 
On Behalf Of Chris Bipes
Sent: Tuesday, January 25, 2005 3:06 PM
To: 'Midrange Systems Technical Discussion'
Subject: RE: IFS Performance

But still you are comparing a dedicated win2k box to an AS400 that was not 
configured for file serving as the primary task.  Now create a subsystem, 
memory pool, and class for the NetServer jobs to run in.  Give it a high 
priority and the memory to run.  Now compare the two boxes.  How much better 
does the as400 do compared to the previous configuration?  Simple tuning on the 
iSeries can greatly increase performance.

If your iSeries is reaching it limit because it is older and slower and running 
out of resources, (CPU, Memory, Disk arms), then adding an additional task will 
cause poor performance.  When you put all the pieces together, Backup, 
management, licenses, etc. the consolidation can justify itself.

Chris Bipes

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of James Rich
Sent: Tuesday, January 25, 2005 10:28 AM
To: Midrange Systems Technical Discussion
Subject: RE: IFS Performance


On Tue, 25 Jan 2005, Chris Bipes wrote:

> 2. What else does your Win2K Pro box do?  Is it only serving up this 
> one file?  How much memory and what type of disk drive(s)?  Now go get 
> a dedicate AS400 just for file serving and turn off everything else.  
> Tune
it
> correctly and see if it performs as well as the PC server.  Let's 
> compare thing equally and fairly.

While a dedicated iSeries may well perform better, I don't really think that is 
the point.  The reason for putting the files on the iSeries in the first place 
is consolidation.  But if doing so ruins performance then consolidation is not 
the answer.  If the iSeries purports to solve problems by cosolidating 
machines, it had better perform well when doing so!  I am certainly not going 
to spend many thousands more to get a big enough iSeries to handle the 
additional load of this one task when I can spend a few hundred and get a linux 
box that will run circles around it.
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