RE: FoxPro DOS v. Visual Foxpro : Speed of data conversion / processing

Author: Joe Yoder, JAYENT@A1usa.net

Posted: 1999-08-30 at 05:11:00

Russ,

I have compare the low level file read and insert into <tablename> from

memvar against an append from (on a network) and was amazed at the

results. Low level was faster even including some data massaging not

possible in the append. I posted those results to the FoxShare list some

time ago.

Joe Yoder

jayent@a1usa.net

On Sunday, August 29, 1999 9:56 PM, russsct@ix.netcom.com (Russ Scott)

wrote:

>

>Hey, all:

>

>I have a chance to investigate a data conversion job. This would involve

>importing from a flat file into FP tables, formatting/ massaging it, then

>outputting it to another set of flat files. The company uses FPD (not sure

>which version) instead of VFP because "FPD is faster". To give you an idea

>of the size of the jobs involved, they take from ~1 hour to multiple days.

>

>This causes me to ask some questions:

>

>Would FPD really be faster for data conversion if you compared VFP under

>Win9x/NT to FPD running on the same machine booted to DOS only? Does the

>version of DOS make a significant difference? Does anyone have any hard

>data, educated guesses or gut feelings about this?

>

>Are there considerations besides speed (reliablility for example) to take

>into consideration?

>

>On a related note, has anyone clocked APPEND FROM... and COPY TO... against

>low-level file commands?

>

>I don't have to talk to these people for a couple of days and was curious

>if anyone else had looked into these issues.

>

>Any ideas?

>

>

>Thanks:

>

>Russ Scott

>russsct@ix.netcom.com

©1999 Joe Yoder, JAYENT@A1usa.net