[Zope-dev] BTreeFolder2.objectIds() - accessing _tree.keys() slow

[Shane Hathaway]

sean.upton at uniontrib.com wrote:
> I'm pretty sure this works.

Ok, I get it now.  I misread it the first time.

> This returns the equivalent of running
> self.objectIds(spec=self._mt_index.keys()) on the current trunk/release
> code, which should be identical to self._tree.keys(), but much, much faster.
> I'm still somewhat ignorant as to why self._tree.keys() is so slow with
> 100k-plus objects (waking up too many persistent objects?),

I suspect the cost is in creating ghosts for all of the persistent objects.

No objections here--I like this patch.

Shane