Hi Alex, Thanks for responding to my problem, this is exactly what Leslie Polzer has told me.
Just to clarify, when I remove an object from a btree, it only removes the reference to the object from the btree. The actual slot value is kept separately, in my case, it's the "name" slot. > no, as far I know, that's because Elephant sucks -- it doesn't have garbage > collector. Will garbage collector be added into elephant in the future? I'll give drop-pobject or drop-instances a try tonight. Aaron On Tue, Apr 8, 2008 at 12:33 PM, Alex Mizrahi <[EMAIL PROTECTED]> wrote: > > If theory is correct, executing the loop more than once should cause > the > database size to stay relatively the same after the first run. > > However, each time I re-execute the loop, the size always increase by a > good factor. > > I do not think it's the transaction log file because of the increment > amount seemed large. > > I also tried to insert and delete directly in the database, this method > does seem to re-use already allocated pages. > > Am I doing something wrong? > > no, as far I know, that's because Elephant sucks -- it doesn't have > garbage > collector. > you remove objects from btree, but Elephant doesn't know if there are no > references elsewhere, so it just keeps this object. > note that this happens for objects only because they are stored in special > way (slots are stored separately) -- there would be no problems with > strings, numbers or some aggregates of thereof. > > if you want this space to be reclaimed, use drop-pobject function -- it > should erase object's slots. (if object is indexed, use drop-instances -- > then it will also delete it from index. > (um, weird: can't it be one generic method?) > > alternative way is to use migration -- stuff that is not won't be copied. > > > > _______________________________________________ > elephant-devel site list > elephant-devel@common-lisp.net > http://common-lisp.net/mailman/listinfo/elephant-devel >
_______________________________________________ elephant-devel site list elephant-devel@common-lisp.net http://common-lisp.net/mailman/listinfo/elephant-devel
