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Re^6: Combining Ultra-Dynamic Files to Avoid Clustering (Ideas?)( A DB won't help)

by Your Mother (Archbishop)
on Jul 28, 2004 at 00:02 UTC ( #377891=note: print w/replies, xml ) Need Help??


in reply to Re^5: Combining Ultra-Dynamic Files to Avoid Clustering (Ideas?)( A DB won't help)
in thread Combining Ultra-Dynamic Files to Avoid Clustering (Ideas?)

I was thinking RECNO, not a BTREE (right?), and you're right, I missed the point :) So the idea is neither relevant nor any good, just a curiosity of whether the following...

my @h ; tie @h, "DB_File", $filename, O_RDWR|O_CREAT, 0666, $DB_REC +NO; # starting with something like... $h[512_000_000] = "orange";

would behave like presizing a real array which saves on overhead generated by growing and shrinking it. I just tried a bit of test code and some rather unscientific times of it shows it makes little difference and if it does, it's slightly against the pre-sizing.

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