RE: User Space extent

First, switch to an IFS file and use large file support open64() and you'll
solve your problem with 16MB. I thought you were reading/writing >16MB at a
time. For a "throughout the day" routine should consider an IFS file as the
solution.
Second, the reason there is a 16MB limit that cannot be changed is because
that code is so widely tide into OS/400 in so many places, and so optimized
that if they changed it, it could break the OS.

Back in the 1970s when they did this, nobody thought that one day most of
the U.S. population would be throwing away the 16MB SD memory cards that
came with their digital cameras, because they were too small. 
Although, now that I think about it... why was it that somebody said
"Pointers are always too small so let's make them bigger than we'll ever
need" and yet decided that 16MB was more memory that they would ever need.
<g>


-Bob Cozzi
www.RPGxTools.com
RPG xTools - Enjoy programming again.


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Tony Carolla
Sent: Wednesday, December 28, 2005 10:14 AM
To: RPG programming on the AS400 / iSeries
Subject: Re: User Space extent

The user space will contain updated account numbers (3A + 9P 0, combined
into a 12A) that are collected from journal entries throughout the day.  The
number of elements can climb to 400k-500k a day (cleared out each night), so
I will rarely hit the ceiling (except maybe after a three-day weekend).  The
reason I hit the ceiling was due to a bug I created while writing the
program, but I wanted to know if there was a way to do the impossible, an
'insider trick', to bypass that 16MB limit.

Interesting... It piques my curiousity why the 16MB 'knob' can't just be
turned up... That really bytes (three times no less ;-)

On 12/27/05, albartell <albartell@xxxxxxxxx> wrote:
>
> Just curious, what are you placing in the user space that is exceeding
> 16MB?
>
>
>
> Aaron Bartell
>
>
> -----Original Message-----
> From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
> On Behalf Of Tony Carolla
> Sent: Friday, December 23, 2005 3:52 PM
> To: RPG programming on the AS400 / iSeries
> Subject: User Space extent
>
> Merry Christmas again!  May the Chrismas cheer burn in deeper than the
> screen from a 3196 console!
>
> I am creating a user space, set to auto-extend, and in a loop, placing a
> 12
> alpha value in the user space, incrementing the pointer, etc.  But as soon
> as I get to 16MB, it crashes.  Is there any way to make a user space
> larger
> than 16mb?  If not, I guess I will have to use memory directly, but not
> sure
> if I want to do that...
>
> --
> "Enter any 11-digit prime number to continue..."
> "In Hebrew SQL, how do you use right() and left()?..." - Random Thought
> "If
> all you have is a hammer, all your problems begin to look like nails"
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--
"Enter any 11-digit prime number to continue..."
"In Hebrew SQL, how do you use right() and left()?..." - Random Thought
"If all you have is a hammer, all your problems begin to look like nails"