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Subject: V4RB: Speed issues
Author: Frank Bitterlich
Posted: 2001/10/31 07:28:27
 
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Hi List,

I have noticed something which isn't a real problem for me, but maybe
someone can explain this... I have a baseobject (600.000 records,
approx. 70 fields, not linked) that gets approx. 50 record updates and
50 new records a day. But once a month, I delete all records and
re-import them from an external data source.

I have noticed that when I do this the "normal" way (dlete all records,
flush, start importing) the importing becomes very slow after approx.
200.000 records (20 rps and less instead of 350 rps initially). But when
I do this, but abort the import shortly after beginning, and start it
over (again delete all records, flush, start importing), the
records-per-second rate doesn't drop that substantially; at 500.000
records, I still get about 200-250 rps.

What could be the reason for that? Re-using of database pages where the
index is stored? As I said, not a real problem sinc I know the
workaround, but I'm curious about the reason. Using V4RB 1.8.9r4 in a
PPC app on 9.0.4, app has 100 MB RAM, 50% Valentina cache.

Ruslan?

Cheers,
Frank+++



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©2001 Frank Bitterlich
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