Re: IFS file copy performance

And how do he increase his buffer size?


Thanks,

Jason E. Olson
IBM i Engineer/Developer
josys36@xxxxxxxxx
480.223.2952

On Mon, Aug 4, 2025, 3:12 PM Steve Ferrell via WDSCI-L <
wdsci-l@xxxxxxxxxxxxxxxxxx> wrote:

Hi David,

I tested a 49 mb file; using the older buffer it took 15 minutes or more.

The 64k buffer took 20 seconds or less.

An 8 mb file took 3 seconds.

I'll add a Jira and update the buffer size in the next release.

Thanks for pointing out the slow speeds!

Steve
Fortra


-----Original Message-----
From: WDSCI-L <wdsci-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Steve
Ferrell via WDSCI-L
Sent: Monday, August 4, 2025 2:22 PM
To: Rational Developer for IBM i <wdsci-l@xxxxxxxxxxxxxxxxxx>
Cc: Steve Ferrell <Steve.Ferrell@xxxxxxxxxx>
Subject: Re: [WDSCI-L] IFS file copy performance

External: Pause and review the sender's email address, any URLs before
clicking links, opening attachments, or following requests. When in doubt,
contact the Service Desk.


Okay, thanks!

I see now that the buffers size is very small. (4096 is small for very
large files.)


-----Original Message-----
From: WDSCI-L <wdsci-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of David
Gibbs via WDSCI-L
Sent: Monday, August 4, 2025 2:19 PM
To: Rational Developer for IBM i <wdsci-l@xxxxxxxxxxxxxxxxxx>
Cc: David Gibbs <david@xxxxxxxxxxxx>
Subject: Re: [WDSCI-L] IFS file copy performance

External: Pause and review the sender's email address, any URLs before
clicking links, opening attachments, or following requests. When in doubt,
contact the Service Desk.


On Mon, Aug 4, 2025 at 2:02 PM Steve Ferrell via WDSCI-L <
wdsci-l@xxxxxxxxxxxxxxxxxx> wrote:

Are you dragging and dropping it in the IFS from local files?

Yes.

Although in iACS I'm using the upload menu function.

david

--
IBM i on Power Systems: For when you can't afford to be out of business!

I'm riding in the American Diabetes Association's Tour de Cure to raise
money for diabetes research, education, advocacy, and awareness.
You can make a tax-deductible donation to my ride by visiting
https://mideml.diabetessucks.net/.

I may have diabetes, but diabetes doesn't have me!
--
This is the Rational Developer for IBM i (WDSCI-L) mailing list
To post a message email: WDSCI-L@xxxxxxxxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: https://lists.midrange.com/mailman/listinfo/wdsci-l
or email: WDSCI-L-request@xxxxxxxxxxxxxxxxxx
Before posting, please take a moment to review the archives at
https://archive.midrange.com/wdsci-l.


--
This is the Rational Developer for IBM i (WDSCI-L) mailing list
To post a message email: WDSCI-L@xxxxxxxxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: https://lists.midrange.com/mailman/listinfo/wdsci-l
or email: WDSCI-L-request@xxxxxxxxxxxxxxxxxx
Before posting, please take a moment to review the archives at
https://archive.midrange.com/wdsci-l.


--
This is the Rational Developer for IBM i (WDSCI-L) mailing list
To post a message email: WDSCI-L@xxxxxxxxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: https://lists.midrange.com/mailman/listinfo/wdsci-l
or email: WDSCI-L-request@xxxxxxxxxxxxxxxxxx
Before posting, please take a moment to review the archives
at https://archive.midrange.com/wdsci-l.