comparison mercurial/help/config.txt @ 41824:688fc33e105d

storage: introduce a `revlog.reuse-external-delta` config

This option goes a bit further and provides a way to get the same behavior as the
`re-delta-all` optimisation from `hg debugupgraderepo`.

The effect of the option is a bit hard to test as we do not have multiple diff
algorithm at hand. However, we at least make sure the code path run.

41823:f6eff9e4de80

    Note: this option only control the order in which delta parents are
    considered.  Even when disabled, the existing delta from the source will be
    reused if the same delta parent is selected.

``server``
----------

Controls generic server settings.

41824:688fc33e105d

    Note: this option only control the order in which delta parents are
    considered.  Even when disabled, the existing delta from the source will be
    reused if the same delta parent is selected.

``revlog.reuse-external-delta``
    Control the reuse of delta from external source.
    (typically: apply bundle from `hg pull` or `hg push`).

    New revisions are usually provided as a delta against another revision. By
    default, Mercurial will not recompute the same delta again, trusting
    externally provided deltas. There have been rare cases of small adjustment
    to the diffing algorithm in the past. So in some rare case, recomputing
    delta provided by ancient clients can provides better results. Disabling
    this option means going through a full delta recomputation for all incoming
    revisions. It means a large increase in CPU usage and will slow operations
    down.

    This option is enabled by default. When disabled, it also disables the
    related ``storage.revlog.reuse-external-delta-parent`` option.

``server``
----------

Controls generic server settings.