I have about 90,000 dbf files in a single folder. They contain from 0 to 100 records, but generally 5-20. I have a .prg file that cycles thru all the tables and does some processing based on contents. The problem/puzzle is that sometimes this .prg file can go thru all 90,000 in about 1 minute, and other times it can take 15 minutes. No change to the .prg at all. I've checked the task manager and it's not the case that the CPU is occupied by other processes when the .prg is functioning slowly. It just seems that VFP in some situations 'knows' about the tables and can move thru them quickly, and in other cases it is seeing the data for the first time (and I should add that I cycle thru the 90,000 multiple times with different criteria, and when it's operating well, the 1 minute time is consistent , and when slow, it's 15 minutes every time thru - never improves). So is this a VFP issue or Windows in general? I've tried adding some Sys() commands at the start (based on the Help file) but it does not improve things.
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Performance problem 4
- Thread starter jamesrav
- Start date
Rick C. Hodgin
Programmer
Mike, if you want to continue this discussion we'll have to take it another forum. Name the place and I'll continue.
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Rick C. Hodgin
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Rick C. Hodgin
- Status
