RE: V5R3 Performance Issue

["Wilt, Charles" <CWilt@xxxxxxxxxxxx>]

What hardware do you have?

I saw a significant decrease in performance after moving from v5r1 to v5r2 on a 
model 400 at my last position.

IBM determine that basically I was SOL as the OS had been optimized for the 
newer hardware.  Luckily, the move to v5r2 was just in preparation for the 
install of a new 270.

Charles Wilt
iSeries Systems Administrator / Developer
Mitsubishi Electric Automotive America
ph: 513-573-4343
fax: 513-398-1121
 

> -----Original Message-----
> From: midrange-l-bounces@xxxxxxxxxxxx
> [mailto:midrange-l-bounces@xxxxxxxxxxxx]On Behalf Of Scott Klement
> Sent: Friday, May 20, 2005 4:35 AM
> To: Midrange Systems Technical Discussion
> Subject: Re: V5R3 Performance Issue
> 
> 
> Hello,
> 
> > We installed V5R3 a couple of weeks ago.  Since then one of 
> our nightly 
> > critical path jobs has more than doubled in run time.
> 
> I know I'm joining this discussion late (I haven't been able 
> to keep up 
> with e-mail this week) but I just wanted to say that I've been having 
> similar experiences with V5R3.
> 
> Since upgrading from V5R2 to V5R3, pretty much everything on 
> the system is 
> slower.  I don't mean just SQL or just database -- pretty 
> much everything 
> is slower.
> 
> I suspect that my problem is lack of memory -- that V5R2 used 
> less memory 
> than V5R3 and that the difference happened to matter on my 
> machine, since 
> I haven't heard anyone else opine that V5R3 is slower.
> 
> Unfortunately, I've been too busy to find that out for sure.  
> If you come 
> up with a good solution to your speed problems, please post 
> them here. I'd 
> be interested to see what you learn...
> 
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