Re: Interactive memory pool...how much to allocate per user?

[Jim Oberholtzer <midrangel@xxxxxxxxxxxxxxxxx>]

Over a period of about 5 - 8 minutes what does the paging/faulting look 
like?  If you can copy the text to the list showing all of the WRKSYSSTS 
output then the answer of how much memory for interactive is a bit 
easier to answer.  The WRKSYSSTS screen will tell us quite a bit.  (I 
always change the font to fixed when I paste it to keep columns in 
line)   By the way, while your taking the sample, don't refresh 
constantly.  Only refresh a couple of times during the observation.  
Refresh can actually alter the results of the sample enough to toss off 
any analysis.


Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


On 12/10/2012 8:28 AM, Porterfield, Sean wrote:
> No, almost no SQL in our environment.  It did drop from 21 to 19 in the 30 seconds I watched (hence "about 20" in my response), but I don't know what is typical.  Right now, it's ~27GB for 936 users.
> --
> Sean Porterfield
>
> -----Original Message-----
> From: Charles Wilt
> Sent: Friday, December 07, 2012 16:01
> To: Midrange Systems Technical Discussion
> Subject: Re: Interactive memory pool...how much to allocate per user?
>
> Sean,
>
> That seems pretty high to me....
>
> Do you by chance have a lot of SQL used by your interactive programs?
>
> Charles
>
>
> On Fri, Dec 7, 2012 at 12:16 PM, Porterfield, Sean<  SPorterfield@xxxxxxxxxxxxxxxxxxxxxxx>  wrote:
>
> > >  I can't answer for recommendations, but with auto-tune enabled, we
> > >  have around 20 GB (ignoring GB/GiB type math issues) for 953 signed on users.
> > >    Stats according to WRKSHRPOOL and DSPSYSSTS.
> > >  --
> > >  Sean Porterfield
> > >
> > >
> > >  -----Original Message-----
> > >  From:midrange-l-bounces@xxxxxxxxxxxx  [mailto:
> > >  midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Charles Wilt
> > >  Sent: Friday, December 07, 2012 12:08
> > >  To: Midrange Systems Technical Discussion
> > >  Subject: Interactive memory pool...how much to allocate per user?
> > >
> > >  All,
> > >
> > >  Looking for a rough guideline of how much memory to initially allocate
> > >  per user in the interactive pool.
> > >
> > >  Found a older article that mentions 640KB...
> > >
> > >  Heck even at 1MB per user....me thinks the 16GB (yes gigabytes)
> > >  currently allocated is waaaayy overkill for the just over 300 users
> > >  active..:)
> > >
> > >  This is on a 9406-825 with 46GB of memory running v5r4.
> > >
> > >  Thanks!
> > >  Charles
> > >  --