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 From: Tony Vignone
  Where is Tony Vignone?
 St Augustine
 Florida - United States
 Tony Vignone
 To: Pete Sass
  Where is Pete Sass?
 Marathon, Ontario
 Canada
 Pete Sass
 Tags
Subject: RE: NEED FOR SPEED STRING PARSING
Thread ID: 416207 Message ID: 416252 # Views: 42 # Ratings: 0
Version: Visual FoxPro 9 SP2 Category: General VFP Topics
Date: Wednesday, December 24, 2014 9:21:34 PM         
   


> > Zia beat me to it. Definitely use low level code for this application.
> > I have done things like this many times to great advantage in time.
> >
> > Tony
>
>
> Hi Tony,
>
> Well I will definitely be testing both approaches out to the max.
>
> I have just completed a 154 Meg binary file parse currently being
> proceeded via the VFP CHRTRAN() function call and adding the CR + LF
> into this string handling routine as well at the same time.
>
> I can hardly wait to try the low-level approach to benchmark the difference
> in speed that I hope to realize parsing the same binary file in the same
> way but with the low-level file handling approach.
>
> Needless to say I will be providing the benchmarked speed results for
> both here in the forum after Xmas.
>
> Pete "the IceMan", from the Great White North of Canada.
> www.marathongriffincomputers.com


I tested a 300 MG file and extracted 200 byte records, first to a cursor then to a text file.
It took 4.96 seconds and I created over 1.5 million record

Here is what I used:

clear
close all
create cursor extract (fld C(200))
tau = fopen("tester.dat")	&& 300 MB
t = seconds()
do while not feof(tau)
	rec = fread(tau,200)
	insert into extract values (rec)
enddo
fclose(tau)
copy to testout.txt type sdf
?seconds()-t


Tony

ENTIRE THREAD

NEED FOR SPEED STRING PARSING Posted by Pete Sass @ 12/23/2014 6:53:08 PM
RE: NEED FOR SPEED STRING PARSING Posted by Ali Koumaiha @ 12/23/2014 7:04:00 PM
RE: NEED FOR SPEED STRING PARSING Posted by Pete Sass @ 12/23/2014 9:18:02 PM
RE: NEED FOR SPEED STRING PARSING Posted by Greg Green @ 12/23/2014 9:32:14 PM
RE: NEED FOR SPEED STRING PARSING Posted by Pete Sass @ 12/23/2014 11:34:52 PM
RE: NEED FOR SPEED STRING PARSING Posted by Greg Green @ 12/24/2014 12:40:30 AM
RE: NEED FOR SPEED STRING PARSING Posted by Pete Sass @ 12/24/2014 1:59:48 AM
RE: NEED FOR SPEED STRING PARSING Posted by Greg Green @ 12/24/2014 4:06:32 AM
RE: NEED FOR SPEED STRING PARSING Posted by Jun Tangunan @ 12/24/2014 1:58:25 AM
RE: NEED FOR SPEED STRING PARSING Posted by Pete Sass @ 12/24/2014 2:48:33 AM
RE: NEED FOR SPEED STRING PARSING Posted by Jun Tangunan @ 12/24/2014 3:08:43 AM
RE: NEED FOR SPEED STRING PARSING Posted by Mike Yearwood @ 12/23/2014 10:26:18 PM
RE: NEED FOR SPEED STRING PARSING Posted by Pete Sass @ 12/24/2014 2:57:22 AM
RE: NEED FOR SPEED STRING PARSING Posted by Mike Yearwood @ 12/23/2014 10:35:06 PM
RE: NEED FOR SPEED STRING PARSING Posted by Pete Sass @ 12/24/2014 3:01:56 AM
RE: NEED FOR SPEED STRING PARSING Posted by Doug Hennig @ 12/23/2014 10:28:14 PM
RE: NEED FOR SPEED STRING PARSING Posted by Pete Sass @ 12/23/2014 11:10:55 PM
RE: NEED FOR SPEED STRING PARSING Posted by Randy Bosma @ 12/26/2014 4:03:13 PM
RE: NEED FOR SPEED STRING PARSING Posted by Chuanbing Chen @ 12/24/2014 12:16:21 AM
RE: NEED FOR SPEED STRING PARSING Posted by Pete Sass @ 12/24/2014 2:06:53 AM
RE: NEED FOR SPEED STRING PARSING Posted by Pete Sass @ 12/24/2014 5:49:20 AM
RE: NEED FOR SPEED STRING PARSING Posted by Mike Yearwood @ 12/29/2014 6:05:14 PM
RE: NEED FOR SPEED STRING PARSING Posted by Pete Sass @ 12/29/2014 7:30:28 PM
RE: NEED FOR SPEED STRING PARSING Posted by Zia Mughal @ 12/24/2014 8:23:15 AM
RE: NEED FOR SPEED STRING PARSING Posted by Pete Sass @ 12/24/2014 4:50:30 PM
RE: NEED FOR SPEED STRING PARSING Posted by Tony Vignone @ 12/24/2014 5:07:32 PM
RE: NEED FOR SPEED STRING PARSING Posted by Pete Sass @ 12/24/2014 5:53:57 PM
RE: NEED FOR SPEED STRING PARSING Posted by Tony Vignone @ 12/24/2014 9:21:34 PM
RE: NEED FOR SPEED STRING PARSING Posted by Tony Vignone @ 12/25/2014 8:31:14 AM
RE: NEED FOR SPEED STRING PARSING Posted by Pete Sass @ 12/25/2014 4:56:51 PM
RE: NEED FOR SPEED STRING PARSING Posted by Tony Vignone @ 12/25/2014 5:57:14 PM
RE: NEED FOR SPEED STRING PARSING Posted by Pete Sass @ 12/25/2014 9:01:03 PM
RE: NEED FOR SPEED STRING PARSING Posted by Tony Vignone @ 12/26/2014 2:51:27 PM
RE: NEED FOR SPEED STRING PARSING Posted by Pete Sass @ 12/26/2014 4:09:19 PM
RE: NEED FOR SPEED STRING PARSING Posted by Tony Vignone @ 12/26/2014 4:25:35 PM