Mercurial > hg
view relnotes/5.1 @ 49790:f463eb675e85 stable
emitrevision: consider ancestors revision to emit as available base
This should make more delta base valid. This notably affects:
* case where we skipped some parent with empty delta to directly delta against
an ancestors
* case where an intermediate snapshots is stored.
This change means we could sent largish intermediate snapshots over the wire.
However this is actually a sub goal here. Sending snapshots over the wire means
the client have a high odd of simply storing the pre-computed delta instead of
doing a lengthy process that will… end up doing the same intermediate snapshot.
In addition the overall size of snapshot (or any level) is "only" some or the
overall delta size. (0.17% for my mercurial clone, 20% for my clone of Mozilla
try). So Sending them other the wire is unlikely to change large impact on the
bandwidth used.
If we decide that minimising the bandwidth is an explicit goal, we should
introduce new logic to filter-out snapshot as delta. The current code has no
notion explicite of snapshot so far, they just tended to fall into the wobbly
filtering options.
In some cases, this patch can yield large improvement to the bundling time:
### data-env-vars.name = mozilla-try-2019-02-18-zstd-sparse-revlog
# benchmark.name = perf-bundle
# benchmark.variants.revs = last-100000
before: 68.787066 seconds
after: 47.552677 seconds (-30.87%)
That translate to large improvement to the pull time :
### data-env-vars.name = mozilla-try-2019-02-18-zstd-sparse-revlog
# benchmark.name = pull
# benchmark.variants.issue6528 = disabled
# benchmark.variants.revs = last-100000
before: 142.186625 seconds
after: 75.897745 seconds (-46.62%)
No significant negative impact have been observed.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Sat, 12 Nov 2022 00:18:41 +0100 |
parents | cba59b338976 |
children |
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== New Features == * New config `commands.commit.post-status` shows status after successful commit. * `hg root` now has templating support, including support for showing where a repo share's source is. See `hg help -v root` for details. * New `--force-close-branch` flag for `hg commit` to forcibly close branch from a non-head changeset. * The curses-based interface for commands like `hg commit -i` now supports a range-select mechanism. Select the first line using space like before, navigate to the last line, and press X (capital x) to set all items in the range at once. Lowercase x has been added as a synonym for space to help reinforce the mechanism, and pressing enter/return continues to be a synonym for "toggle the current line and move down to the next item in this section." == New Experimental Features == * New config `experimental.log.topo` makes `hg log -G` use topological sorting. This is especially useful for aliases since it lets the alias accept an `-r` option while still using topological sorting with or without the `-r` (unlike if you use the `sort(..., topo)` revset). == Bug Fixes == * issue4292: "hg log and {files} {file_adds} {file_mods} {file_dels} in template show wrong files on merged revision". See details in "Backwards Compatibility Changes". == Backwards Compatibility Changes == * Removed (experimental) support for log graph lines mixing parent/grandparent styles. Setting e.g. `experimental.graphstyle.parent = !` and `experimental.graphstyle.grandparent = 3.` would use `!` for the first three lines of the graph and then `.`. This is no longer supported. * If `ui.origbackuppath` had been (incorrectly) configured to point to a file, we will now replace that file by a directory and put backups in that directory. This is similar to how we would previously replace files *in* the configured directory by subdirectories. * Template keyword `{file_mods}`, `{file_adds}`, and `{file_dels}` have changed behavior on merge commits. They used to be relative to the first parent, but they now consider both parents. `{file_adds}` shows files that exists in the commit but did not exist in either parent. `{file_dels}` shows files that do not exist in the commit but existed in either parent. `{file_mods}` show the remaining files from `{files}` that were not in the other two sets. == Internal API Changes == * Matchers are no longer iterable. Use `match.files()` instead. * `match.visitdir()` and `match.visitchildrenset()` now expect the empty string instead of '.' to indicate the root directory. * `util.dirs()` and `util.finddirs()` now include an entry for the root directory (empty string). * shelve is no longer an extension now. it will be turned on by default. * New API to manage unfinished operations: Earlier there were distinct APIs which dealt with unfinished states and separate lists maintaining them that are `cmdutil.afterresolvestates`, `cmdutil.unfinishedstates` and `cmdutil.STATES`. Now these have been unified to a single API which handles the various states and their utilities. This API has been added to `state.py`. Now instead of adding to these 3 lists independently a state for a new operation can be registered using `addunfinished()` in `state` module. * `cmdutil.checkunfinished()` now includes detection for merge too. * merge abort has been disallowed in case an operation of higher precedence is in progress to avoid cases of partial abort of operations. * We used to automatically attempt to make extensions compatible with Python 3 (by translating their source code while loading it). We no longer do that.