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Speed issues
Message
From
18/07/2003 08:49:14
Jay Johengen
Altamahaw-Ossipee, North Carolina, United States
 
General information
Forum:
Visual FoxPro
Category:
Other
Title:
Miscellaneous
Thread ID:
00811416
Message ID:
00811451
Views:
18
Marvin,

What size table (records and fields), with what field types and what was the Delete() state as well as the number of deleted records compared to non-deleted? Just trying to see what your baseline was before I start some of my own tests.

Renoir


>Here are some false Speeding issues reported by somebody
>
>Test it yourself and see.
>
>False statements:
>1. locate is much faster than a got top because its rushmore optimized. Got a 20-50 times faster with a got top instead
>2. do while !eof with skip is slower than scan .. endscan got a 6 times faster with do while !eof() .. skip +1 ... enddo
>
>Here is a real speed issue:
>
>1. Locate for !empty(date), or locate for date#ctod("") - use - locate for date#{} instead and get a 3-10 times faster command
>2. use the occurs() command instead of checking each character and get 300 times faster for those who didnt use it in their CSV commands.
>3. Set database to DATABASE and use table instead of use DATABASE!TABLE and get 2.5 times faster
>4. Only in development : Disable your standard symbol bar, because it shows the actual Database which has a great influense on the speed of set database to command
>
>Universalthread wishes:
>1. I would appreciate to have a Form with speed test commands in universalthread possibly with a grid on it showing the differences between the speed of commands.
>2. A similar to the speed test form but now for all the errors to let Microsoft use this form to repair VFP
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