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Object overhead [message #26764]

Fri, 21 September 2001 14:44

Pavel A. Romashkin
Messages: 531
Registered: November 2000

Senior Member

I noticed that the size of an object array, where each object only has
one empty poiter field, is 4 times larger than the size of an empty
pointer array of the same length. PTRARR(1000), when saved, takes about
44 Kb. OBJARR(1000) of {junk, data:PTR_NEW()} takes 176 Kb. Why is that?
Also, it takes twice the time (0.79 vs 0.44 s) to save an object array
than the pointer array. It can not have to do with the volume of saved
data because it takes 0.05 s to save an 80 Kb FLTARR(20000).
I thought of converting a data processing program to objects but found
that storage space required almost doubles (well, partially due to some
redundancy in object fields) and save/restore time increased tenfold.
For storing many thousands of data objects, this matters.
Thank you,
Pavel

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Object overhead

By: Pavel A. Romashkin on Fri, 21 September 2001 14:44

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