Re: [elephant-devel] Bug fixes for elephant-unstable

2008-11-21 Thread Christoph Ludwig
On Fri, Nov 21, 2008 at 02:14:22PM -0500, Ian Eslick wrote: > I think my prior e-mail on this topic failed to make it to the list... > > I checked in some patches this week to elephant-unstable: > - Fixed (get-universal-time) issue reported earlier caused by error in > bignum comparisons under B

Re: [elephant-devel] Elephant backend performance characteristics

2008-10-28 Thread Christoph Ludwig
On Tue, Oct 28, 2008 at 12:40:36PM +0100, Leslie P. Polzer wrote: > > > Background: Our application that makes heavy use of elephant/bdb and the > > association feature in the unstable branch is too slow by at least one order > > of magnitude. We obviously need to profile it first before we start

[elephant-devel] Elephant backend performance characteristics

2008-10-28 Thread Christoph Ludwig
Hi, I'd like to know if people on the list have experience with the performance characteristics of the available backends for elephant. I am not asking for detailed measurements and performance differences of few percent but typical usage patterns where you can predict that one backend will likely

Re: [elephant-devel] associations between instances of the same class

2008-07-23 Thread Christoph Ludwig
Hi, the attached patch solves the problem with the "forgotten" associations. The main reason for the problem was that the slot index was incorrectly named in the controller-index-table of the store controller. Is this patch format ok? We are admittedly all but darcs experts. Regards Lukas, Marc

[elephant-devel] associations between instances of the same class

2008-07-20 Thread Christoph Ludwig
Hi, we came across a (to us) surprising behavior of the association code in elephant-unstable: If we generate associations between instances of the same class, then elephant forces these associations to be symmetric. That means we cannot use association slots to implement directed graphs. For exa