Does that mean that when I use IND$FILE with a 64x128 screen it sends 8192 
bytes at a time ?


Regards,
Thomas Berg
_______________________________________________________
Thomas Berg   Specialist   AM/SM&S   SWEDBANK AB (publ)



> -----Ursprungligt meddelande-----
> Från: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU]
> För McKown, John
> Skickat: den 19 september 2012 14:39
> Till: IBM-MAIN@LISTSERV.UA.EDU
> Ämne: Re: Why File transfer through TSO IND$FILE is slower than TCP/IP
> FTP ?

< snip >

> server which encodes the 3270 data stream. Also, then IND$FILE transfer
> is limited to the size of your TSO screen. I.e. send one screen of
> encoded data (at most 80x24, or 1920, bytes for a -2; 27*132==3564 for
> a -5); wait and decode the response (protocol overhead); wash, rinse,
> repeat until all data is transferred. The protocol and data translation
> (if any) overhead on ftp is much less.
> 
> The above is just my SWAG based on some knowledge of how IND$FILE works
> internally.
> 
> --
> John McKown
> Systems Engineer IV
> IT
> 
> Administrative Services Group
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> HealthMarkets(r)
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> 
> > -----Original Message-----
> > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU]
> > On Behalf Of Tsai Laurence
> > Sent: Wednesday, September 19, 2012 6:35 AM
> > To: IBM-MAIN@LISTSERV.UA.EDU
> > Subject: Why File transfer through TSO IND$FILE is slower than TCP/IP
> > FTP ?
> >
> > Dear listers ,
> > as the subject, test file transfer through TSO IND$FILE  & TCP/IP FTP
> > , and found TSO IND$FILE is much slower than FTP. Any idea why  ?
> >
> >
> > Regards,
> > Laurence
> >
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