The creation of delta manifest has to be activated explicitly, IIRC.
Also, this is AFAIK not exposed on the command line, but requires some
SQL to flip some config value in the fossil repository itself.

I believe it was done to keep backward compat with most existing
repositories managed by older versions of fossil (which do not
understand delta manifests). The feature was introduced via Joerg
Sonnenberger evaluating fossil for BSD a project with a very large
history and directory, and fixing the scaling problems he ran into.

On Sat, Aug 17, 2013 at 11:36 AM, Stephan Beal <> wrote:
> On Sat, Aug 17, 2013 at 6:50 PM, Stephan Beal <> wrote:
> i deconstructed the fossil repo and found not a single B card(!). i aborted
> the deconstruct of the tcl repo at 11% and already had 9521 one of them.
> What makes tcl so special in this regard?

Andreas Kupries
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