[ZODB-Dev] DirectoryStorage performance

[Toby Dickenson]

Ivo van der Wijk wrote:

> >How about speed?

Testing with data from my 67M FileStorage, read and write performance see=
ms to=20
be roughly 1.5 times slower than FileStorage, although with a much higher=
 CPU=20
usage.

DirectoryStorage performs some of its writing asynchronously, after the=20
transaction has completed. If you write fast enough then the queue to the=
=20
other thread fills up, and writing degrades to roughly 3 times slower tha=
n=20
FileStorage.