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

[Rob <rob.couch@xxxxxxxxxxxxxx>]

Wow DrFranken,

    I know now... test it before you speak it!  at least scp was not as 
slow as cp...  WOW!

Rob

On 01/01/2016 04:06 PM, DrFranken wrote:
> 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?