• Subject: Re: How long to FTP a SAVF
  • From: Leo Lefebvre <leo@xxxxxxxxx>
  • Date: Sun, 28 Jan 2001 15:39:05 -0500

Hi Patrick

Patrick Townsend wrote:

> Leo,
>
> I wouldn't be too ready to blame this on the AS/400 FTP support. We do FTPs
> between CISC (V3R2, D20) and RISC quite frequently. And the save files are a
> *lot* bigger. I don't ever recall getting this poor through-put. It is true
> that FTP and TCP services on the CISC boxes are implemented "above the OS",
> and IBM improved both protocol and server performance in RISC, but you
> shouldn't be seeing this type of performance.
>

What is your network topology? What speed are your hubs/switches?


>
> Some things to look at:
>
> 1. Are you running the FTP transfer in batch? If so, what priority does it
> have? How much pool memory, etc.? If it is running in batch and other
> applications are running at a higher priority you will see degraded
> performance.
>

The job was running in interactive mode and no other users were signed on
(Saturday afternoon and evening)

>
> 2. What do you have defined for the frame size on the Ethernet line? Very
> small frame sizes can degrade FTP performance.
>

Where do you determine the frame size? In the SSAP list? If so, which SSAP 
should
I use? Defined are 04, 06, 08, 12, AA, C8 and DC.

Leo

> ----- Original Message -----
> From: "Leo Lefebvre" <leo@tug.on.ca>
> To: "midrange-l" <MIDRANGE-L@midrange.com>
> Sent: Saturday, January 27, 2001 6:51 PM
> Subject: How long to FTP a SAVF
>
> > I thought I had a good plan:
> > 1) Save to *SAVF on System 1 (V3R2), Model D60;
> > 2) FTP *SAVF to System 2 (V4R5) Model 720;
> > 3) Restore *SAVF to System2.
> >
> > The two systems are side by side, connected through a 10 mg hub.
> > Testing the process take EXTREMELY long time.The *SAVF contains 905,985
> > records (records are 528 long). 9 hours after the start of the process
> > the job display shows only 50,000 I/Os.
> > I can FTP between my PC and the server at a much faster rate through a
> > simple modem-to-modem connection (capable of 56k).
> >
> > What am I missing?
> > --
> >
> > Leo Lefebvre
> > President
> > Toronto Users Group for Midrange Systems
> > Visit our home page at <http://www.tug.on.ca>
> > Ph: (416) 606-5960   ---   Fx: (416) 495-0100
> > mailto:leo@tug.on.ca
> >
> >
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--

Leo Lefebvre
President
Toronto Users Group for Midrange Systems
Visit our home page at <http://www.tug.on.ca>
Ph: (416) 606-5960   ---   Fx: (416) 495-0100
mailto:leo@tug.on.ca


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