Re: cp or ftp which is faster to transfer files between iseries?

[DrFranken <midrange@xxxxxxxxxxxx>]

Here you are not using NFS you are using the Netserver (/QNTC).

I did some testing at one point between two IBM i 7.1 systems. They are 
local so GbE between them. The files moved were a 300MB IFS file and a 
4GB IFS File.

In order of fastest to slowest:

FTP			Basline (1.0)
CPY QFileSvr.400	17% Slower (*1) (*3)
CPY over NFS 		30% Slower
scp			100% Slower (*2)
cp over QNTC		300% Slower
CPY over QNTC		300% Slower
cp QFileSvr.400 	325% Slower
cp with NFS		550% Slower

(*1) = each type is this percentage additional time than the baseline.
(*2) = scp was not reliable with the 4G File. Fails half the time.
(*3) = QFileSvr.400 actually won the small file by 0.3 second.

cp is the cp command in QP2TERM
CPY is the IBM i CPY command

Observations:

1) I did not expect QFileSvr.400 to be this good. It surprised me. 
However look at the massive difference when using that file system with 
QP2TERM! Over 3 times longer!

2) Also note how slow cp is over NFS while NFS itself was close the 
performance of QFileSvr.400

3) These were not Save Files, I believe they transfer more slowly when 
the target is in /QSYS.LIB

4) Your Mileage May Vary!!!


        - Larry "DrFranken" Bolhuis

www.Frankeni.com
www.iDevCloud.com - Personal Development IBM i timeshare service.
www.iInTheCloud.com - Commercial IBM i Cloud Hosting.

On 12/31/2015 7:47 PM, tim wrote:

> im using nfs. here is example of cp command syntax. i am copying savf to
> another iseries.
>
> STRQSH CMD('cp /qsys.lib/qgpl.lib/ftplib.file
> /qntc/10.0.0.93/root/iseriesbackup/QS36F')
>
>
>
>
> On 12/31/2015 6:43 PM, Vernon Hamberg wrote:
> > What is the context? I know of cp as a QShell or PASE command and not
> > aware of it being used between servers - what are you using to make
> > the servers visible to each other? NFS? QFileSvr.400?
> >
> > Vern
> >
> > On 12/31/2015 4:54 PM, tim wrote:
> > > cp or ftp which is faster to transfer files between iseries?