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

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?