This looks about right. Threshhold is the number of key-value pairs moved
before a subcommit and cache flush, I believe. So 200 should be OK...
probably higher, even.
----- Original Message -----
From: "Chris Withers" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, April 04, 2001 9:51 AM
Subject: [Zope-dev] BTree upgrading
> Hi,
>
> I see the new catalog stuff makes use of new BTrees. I presume the big
> advantages the new catalog has are from these new BTrees. I know of a few
> products which also use these BTrees (Squishdot and some internal ones
here
> spring to mind) so I guess they should be upgraded too?
>
> Well, I had a look at the _convertBTrees method in Catalog.py and it all
made
> sense, so I'm guessing the folowing would be the correct way to convert
some
> BTrees?
>
> from BTrees import IOBTree, BTree, convert
>
> myBTree
>
> if type(myBTree is not IOBTree):
> mynewBTree = IOBTree()
> convert(myBTree,mynewBTree, 200)
>
> ...or..
>
> if type(myBTree is not BTree):
> mynewBTree = BTree()
> convert(myBTree,mynewBTree, 200)
>
> I'm guessing the 200 is how many items get put in each bucket? What should
> influence the choice of this number?
>
> cheers,
>
> Chris
>
> _______________________________________________
> Zope-Dev maillist - [EMAIL PROTECTED]
> http://lists.zope.org/mailman/listinfo/zope-dev
> ** No cross posts or HTML encoding! **
> (Related lists -
> http://lists.zope.org/mailman/listinfo/zope-announce
> http://lists.zope.org/mailman/listinfo/zope )
>
_______________________________________________
Zope-Dev maillist - [EMAIL PROTECTED]
http://lists.zope.org/mailman/listinfo/zope-dev
** No cross posts or HTML encoding! **
(Related lists -
http://lists.zope.org/mailman/listinfo/zope-announce
http://lists.zope.org/mailman/listinfo/zope )
