Re: IFS file copy performance

And how do he increase his buffer size?


Thanks,

Jason E. Olson
IBM i Engineer/Developer
[email protected]
480.223.2952

On Mon, Aug 4, 2025, 3:12 PM Steve Ferrell via WDSCI-L <
[email protected]> 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 <[email protected]> On Behalf Of Steve
> Ferrell via WDSCI-L
> Sent: Monday, August 4, 2025 2:22 PM
> To: Rational Developer for IBM i <[email protected]>
> Cc: Steve Ferrell <[email protected]>
> 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 <[email protected]> On Behalf Of David
> Gibbs via WDSCI-L
> Sent: Monday, August 4, 2025 2:19 PM
> To: Rational Developer for IBM i <[email protected]>
> Cc: David Gibbs <[email protected]>
> 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 <
> [email protected]> 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: [email protected] To subscribe,
> unsubscribe, or change list options,
> visit: https://lists.midrange.com/mailman/listinfo/wdsci-l
> or email: [email protected]
> 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: [email protected] To subscribe,
> unsubscribe, or change list options,
> visit: https://lists.midrange.com/mailman/listinfo/wdsci-l
> or email: [email protected]
> 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: [email protected]
> To subscribe, unsubscribe, or change list options,
> visit: https://lists.midrange.com/mailman/listinfo/wdsci-l
> or email: [email protected]
> 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: [email protected]
To subscribe, unsubscribe, or change list options,
visit: https://lists.midrange.com/mailman/listinfo/wdsci-l
or email: [email protected]
Before posting, please take a moment to review the archives
at https://archive.midrange.com/wdsci-l.