Re: Poor IFS performance?

["Al Barsa, Jr." <barsa2@xxxxxxx>]

At 03:30 PM 02/25/2000 -0800, you wrote:

I am having HUGE performance problems with the IFS.  We wrote an 
application last summer that wrote/read objects into the IFS, and were 
disappointed with the performance.

So what we did was to take those variable size objects and store them in 
multiple variable length fields in the native database, and got a 
performance improvement of about 9 times!

Also, IFS objects use much more disk and tape space than they say.  Our 
calculations last summer showed that (on average) of our objects (and there 
is nothing to say that out objects are average, took about a 150% 0premium 
of disk and tape space.  (Read this carefully, not 50% more, 150% more!)

Al



>I have an ILE C application on V4R3 that reads and writes IFS files
>(root file system) on the AS/400. The performance seems pretty poor. The
>same application running on a PC runs 10 times faster. The PC
>application even runs faster when the IFS directory is mapped to the PC.
>The system load does not seem to be a factor. I thought that the AS/400
>64 bit RISC system would blow the socks off of relatively low powered
>Windows NT PC, but so far I'm wrong. Anyone have any suggestions on
>improving IFS file system performance?
>
>Patrick
>--
>IBM AS/400 communications, FTP automation, and network security
>software and consulting services.
>
>http://www.patownsend.com
>+---
>| This is the Midrange System Mailing List!
>| To submit a new message, send your mail to MIDRANGE-L@midrange.com.
>| To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com.
>| To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com.
>| Questions should be directed to the list owner/operator: david@midrange.com
>+---



+--------------------------------------------------+
| Please do not send private mail to this address. |
| Private mail should go to barsa@ibm.net.         |
+--------------------------------------------------+

Al Barsa, Jr. - Account for Midrange-L
Barsa Consulting, LLC.  
400 > 390

Phone:          914-251-1234
Fax:            914-251-9406
http://www.barsaconsulting.com
http://www.taatool.com

+---
| This is the Midrange System Mailing List!
| To submit a new message, send your mail to MIDRANGE-L@midrange.com.
| To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com.
| To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: david@midrange.com
+---