AS/400 why so slow serving files?

[Juan Ramon García]

Does any one know why AS/400 is so bad serving files from the integrated
file system?

When I say bad, I mean slooooow.
So slow that for instance a search performed in the Notes domino documental
database of a 170 (which resides in the IFS) only compares with a
configuration based on an Intel Pentium 100 running NT

I belive that IBM must make a big effort optimizing such IFS access both by
improving microcode or even adding specific processors for such tasks.

Any comments will be appreciated.

[Dan Bernardez]

Being a "multifilesystem" does not excuse IBM touting the AS/400 as the server of
choice and then proceeding to delivering poor file serving performance.

In a Domino application we developed originally on NT and planned to run on the
AS/400 because of NT downtime, a model 170-2291 is being outperformed by a Pentium
Pro 200 by 3:1 (wall clock time). This was measured for an integral and often
executed part of the application. This section of the application happened to be
doing a significant amount of db.search which has since been optimized such that
it runs in 1/3 of the time on both machines (still about 3 to 1, though).

For my part, I am confident that IBM (through future versions of the OS) will be
able to tackle this issue - they always have in the past.

Dan Bernardez

Bob Utyushev wrote:

> "Juan Ramon GarcĚa" wrote:
>
> > Does any one know why AS/400 is so bad serving files from the integrated
> > file system?
> >
>

> IFS is a *multifilesystem* root. It support many different file system as one.
> And what you want?
> If you need fast NON-OS/400 file service you can buy IPCS and install one of
> the OS-server - WinNT, OS/2 Warp, Lotus Notes (Domino) or Novell NetWare.
>
> --
> Bob Utyushev
> Project Manager
> AServer Ltd. (IBM Authorized Training Partner)
> All comments provided "as is" with no warranties
> mailto:bo...@cityline.ru --- ICQ #2507552, nickname: Whisper

[Bob Utyushev]

[Walter]

>IFS is a *multifilesystem* root. It support many different file system as
one.

Is this meant as an excuse for a performance years behind all other server
hardware
platforms?

>If you need fast NON-OS/400 file service you can buy IPCS and install one
of
>the OS-server - WinNT, OS/2 Warp, Lotus Notes (Domino) or Novell NetWare.

IBM has announced the end of everything but NT on the IPCS, including Lotus
Notes ans OS/2. Next thing to
die will be the whole IPCS.

Walter

[Bob Utyushev]

Walter wrote:

> IBM has announced the end of everything but NT on the IPCS, including Lotus
> Notes ans OS/2. Next thing to
> die will be the whole IPCS.
>
> Walter

The new name of IPCS is NetFinity Server for AS/400. I think the Lotus on IPCS
will be available but only old version (up to 4.6). New version of Lotus (5.x)
will implemented only as *native licpgm*.

[Fred Wiest]

I think you just opened a religous issue. I love the AS/400 but if you want
a PC server, buy a PC server! We are kidding ourselves if we think the IFS
is a good PC server. I happen to have very, very good experiences with the
IPCS.

We use the IFS for some specialized services and have found that the V4R2
support for NetServer speeds things up conciderably. I talked to a developer
who said about 2.5 times faster. I think it is much more than that.

Juan Ramon García <jram...@idecnet.com> wrote in message
news:7ed9b1$dml$1...@diana.bcn.ttd.net...

>Does any one know why AS/400 is so bad serving files from the integrated
>file system?
>

[Jose Angel Gomez Yecora]

Since IBM is selling AS/400-native Domino as the state of the art
combination, and given the fact that the domino-notes documental database
resides on the IFS, and the IFS is sloooow ... What would you say to a
IBM-Lotus customer who has already purchased AS/400+native Domino? If you
want performance put a Netfinity (IPCS)card with NT onto your AS/400 and
replace the native domino for an NT based one???? or let him ask IBM for his
money back??

IBM has two choices: A) Make IFS improvements .. B) Not selling native
Domino-AS/400 as the best combination.

[Thomas]

Jose:

I am *not* any kind of Domino expert by any means. But I'm not sure that IBM
has only two choices, nor am I sure that AS/400-Domino isn't the best choice.
Now, if "best" means nothing more than "fastest", I'll agree whole-heartedly
that AS/400-Domino is not the best. However, there are a lot more factors
than just speed of the IFS -- which isn't so bad considering everything it's
capable of. Few file systems anywhere can compete with the IFS on a lot of
characteristics other than just speed.

Tom Liotta

In article <7ekduc$agc$1...@talia.mad.ttd.net>,

Tom Liotta
AS/400 systems programmer

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