relnotes/5.6
author Pierre-Yves David <pierre-yves.david@octobus.net>
Wed, 13 Nov 2024 13:33:36 +0100
branchstable
changeset 52245 d57d1606049c
parent 45803 84eb4c833c41
permissions -rw-r--r--
clone: properly exclude rev-branch-cache from post clone cache warming When adding "CACHE_REV_BRANCH" to "CACHES_ALL" in e51161b12c7e, I did not expected it to impact the clone steps. However the "CACHES_POST_CLONE" set is created rather creatively. (we should fix that, but not on stable) The benchmark caught a quite significant slowdown one hardlink and ssh-stream clones. Such slow down can be reduced to around ~5% by fully warming the cache before the clone. However keeping this expensive step away from the clone operation fully fix the slowdown and preserve the initial intend. Example slowdow for hardlink clone ### benchmark.name = hg.command.clone # bin-env-vars.hg.flavor = default # bin-env-vars.hg.py-re2-module = default # benchmark.variants.explicit-rev = none # benchmark.variants.issue6528 = default # benchmark.variants.protocol = local-hardlink # benchmark.variants.pulled-delta-reuse-policy = default # benchmark.variants.resource-usage = default # benchmark.variants.validate = default ## data-env-vars.name = netbeans-2018-08-01-zstd-sparse-revlog 6.8.2: 19.799752 6.9rc0: 29.017493 (+46.55%, +9.22) after: 19.929341 ## data-env-vars.name = mercurial-public-2018-08-01-zstd-sparse-revlog 6.8.2: 0.468020 6.9rc0: 1.701294 (+263.51%, +1.23) after: 0.471934 ## data-env-vars.name = pypy-2024-03-22-zstd-sparse-revlog 6.8.2: 2.397564 6.9rc0: 5.666641 (+137.41%, +3.28) after: 2.428085

== New Features ==

 * `hg mv -A` can now be used with `--at-rev`. It behaves just like
   `hg cp -A --at-rev`, i.e. it marks the destination as a copy of the
   source whether or not the source still exists (but the source must
   exist in the parent revision).

 * New revset predicate `diffcontains(pattern)` for filtering revisions
   in the same way as `hg grep --diff pattern`.

 * The memory footprint per changeset and per file during pull/unbundle
   operations has been significantly reduced.


== New Experimental Features ==



== Bug Fixes ==



== Backwards Compatibility Changes ==



== Internal API Changes ==

 * `merge.update()` is now private (renamed to `_update()`). Hopefully
   the higher-level functions available in the same module cover your
   use cases.

 * `phases.registernew` now takes a set of revisions instead of a list
   of nodes. `phases.advanceboundary` takes an optional set of revisions
   in addition to the list of nodes. The corresponeding members of the
   `phasecache` class follow this change.

 * The `addgroup` member of `revlog` classes no longer keeps a list of
   all found nodes. It now returns True iff a node was found in the group.
   An optional callback for duplicated nodes can be used by callers to keep
   track of all nodes themselve.

 * The `_chaininfocache` of `revlog` classes has been changed from a dict
   to a LRU cache.