Re: IFS Performance

[rob@xxxxxxxxx]

It's not the disk.  We took files from the IFS and put them on a Wintel 
server on the IXS card on the same box and it was a much better performer.

Rob Berendt
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Group Dekko Services, LLC
Dept 01.073
PO Box 2000
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6928N 400E
Kendallville, IN 46755
http://www.dekko.com





"Urbanek, Marty" <Marty_Urbanek@xxxxxxxxxxxx> 
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01/25/2005 11:44 AM
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Subject
Re: IFS Performance






> ...
> So I think there is a basic flaw performance-wise in the IFS. I have no 
idea why - *TYPE2 was supposed to help, but it is  > not enough for me to 
recommend iSeries as a file server in a high-demand situation.

> Vern

I've noticed that, too, and wonder about it frequently. I wonder if there 
is something I am supposed to be doing to "tune" IFS or if, like you said, 
there is some basic performance flaw. 

NetServer shares seem very slow compared to other file servers, even on 
our best machine with plenty of everything. I suspect this is not due to 
NetServer itself but due to how long it takes it to access the data from 
IFS.

Or, just go into qshell and copy some files/directories around, or even 
better, delete some recursively (rm -rf blah). If you're working with a 
fairly complex directory structure, you will experience a long delay which 
you do not see on Windows or UNIX or even in z/OS USS.

Then I think, if IFS has such a hard time just copying and deleting files, 
how can it possibly do an acceptable job running major Java applications 
where the programs and the data make heavy use of stream files in the root 
and QOpenSys file systems?

I would love to hear from any IBMers who may have insight into this.

Thanks,
-Marty

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