Do you know that you don't have to write to disk?

1. Create a directory like:

mkdir /home/fifiles/

2. Create a User Defined File System. This is permanent.

CRTUDFS UDFS('/dev/QASP01/MyFile.tmpudfs')

3. Mount the file on the temp UDF. This is temporary until the next IPL.

ADDMFS TYPE(*UDFS)MFS(‘/dev/QASP01/MyUSDF.TMPUDFS’)
MNTOVRDIR('/home/fifiles')


You now have user defined file system. Because it is temporary, the OS
creates the file system in memory.


So you are reading and writing from memory. You just write to the IFS like
any other Unix file but it is memory and not written to disk.


The only catch is that you need to put the above instruction in your
startup program to do the mount as every time you IPL, it goes away.






On Wed, Nov 15, 2017 at 2:08 PM, <dlclark@xxxxxxxxxxxxxxxx> wrote:

"RPG400-L" <rpg400-l-bounces@xxxxxxxxxxxx> wrote on 11/15/2017 05:05:35
PM:
I am puzzled by this project. It seems like you are building some huge
string in memory.

Couldn't you simply write the string as you build it to an IFS file and
send from the file?

Not clear to me why you have to build in memory.

That may work in some cases. But I can tell you that was a severe
performance drain for us. Writing to the IFS as temporary storage is not
the most performance friendly prospect. Again... Not for us, at least.

Sincerely,

Dave Clark
--
int.ext: 91078
direct: (937) 531-6378
home: (937) 751-3300

Winsupply Group Services
3110 Kettering Boulevard
Dayton, Ohio 45439 USA
(937) 294-5331




************************************************************
*********************************
This email message and any attachments is for use only by the named
addressee(s) and may contain confidential, privileged and/or proprietary
information. If you have received this message in error, please
immediately notify the sender and delete and destroy the message and all
copies. All unauthorized direct or indirect use or disclosure of this
message is strictly prohibited. No right to confidentiality or privilege
is waived or lost by any error in transmission.
************************************************************
*********************************
--
This is the RPG programming on the IBM i (AS/400 and iSeries) (RPG400-L)
mailing list
To post a message email: RPG400-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: https://lists.midrange.com/mailman/listinfo/rpg400-l
or email: RPG400-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at https://archive.midrange.com/rpg400-l.

Please contact support@xxxxxxxxxxxx for any subscription related
questions.

Help support midrange.com by shopping at amazon.com with our affiliate
link: http://amzn.to/2dEadiD


This thread ...

Replies:

Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2019 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].