Pulkit Goyal <pulkit@yandex-team.ru> [Thu, 31 Jan 2019 20:11:16 +0300] rev 41730
changegroup: don't try to prune manifest nodes if not ellipses
In non-ellipses case, the number of manifest nodes can be very big, and finding
whether one of them can be pruned or not is very costly. For each node, we try
to find the rev and the linkrev, which is expensive.
Sending bit more manifest nodes seems better and much faster here. On our
internal repository, this saves around 5 seconds on `hg tracked --addinclude
<some_path>` on a narrow repo with ellipses disabled.
Differential Revision: https://phab.mercurial-scm.org/D5782
Pulkit Goyal <pulkit@yandex-team.ru> [Mon, 11 Feb 2019 16:34:48 +0300] rev 41729
branchmap: improve doc about BranchMapCache class
It was confusing that we are having two different branchcache and
BranchMapCache classes. The doc in BranchMapCache class was not much helpful
to understand the difference. This patch improves the doc there.
Differential Revision: https://phab.mercurial-scm.org/D5933
Georges Racinet <georges.racinet@octobus.net> [Mon, 04 Feb 2019 19:46:57 +0100] rev 41728
rust: itering less on MissingAncestors.bases for max()
Instead of iterating on the whole `self.bases` each time to find
its max, we keep the latter in a separate member attribute and
keep it up to date in `add_bases()`
On a perfdiscovery done on PyPy, with repos prepared with
`contrib/discovery-helper.sh 50 100`, this gives a slight
improvement (around 0.5% on wall time, but 10% on CPU)
before:
! wall 0.172801 comb 0.180000 user 0.180000 sys 0.000000 (median of 541)
after:
! wall 0.171798 comb 0.160000 user 0.160000 sys 0.000000 (median of 551)
(perf command run time upped because of bigger variability during this test).
Differential Revision: https://phab.mercurial-scm.org/D5945
Georges Racinet <georges.racinet@octobus.net> [Tue, 05 Feb 2019 10:28:32 +0100] rev 41727
rust: stop putting NULL_REVISION in MissingAncestors.bases
As noted in initial review of MissingAncestors, adding
NULL_REVISION in constructor in case the given `bases` is
empty wasn't really useful, yet it's been kept for identity
with the Python implementation
Differential Revision: https://phab.mercurial-scm.org/D5944
Georges Racinet <georges.racinet@octobus.net> [Mon, 04 Feb 2019 12:04:59 +0100] rev 41726
rust: less set lookups in MissingAncestors
using the return values of HashSet::remove(), we can factor
pairs of `contains()/remove()` into a single `remove()`.
On a perfdiscovery run done on the PyPy repository, prepared
with contrib/discovery-helper.sh 50 100, I do get a modest improvement
with this (mean of medians of three runs is better by 2%)
Sample readings, before this change:
! wall 0.175609 comb 0.180000 user 0.180000 sys 0.000000 (median of 58)
With this change:
! wall 0.171662 comb 0.180000 user 0.170000 sys 0.010000 (median of 60)
Differential Revision: https://phab.mercurial-scm.org/D5943
Georges Racinet <georges.racinet@octobus.net> [Mon, 04 Feb 2019 11:39:28 +0100] rev 41725
rust: less set lookups in AncestorsIterator
This uses the boolean return of `HashSet::insert()` to factor
pairs of contains()/insert() into a single insert()
On the mozilla-central repository (450k changesets), I get about a bit more
than 10% better medians in perfancestors (taking the mean of three runs)
Best run for parent changeset:
! wall 0.106474 comb 0.110000 user 0.110000 sys 0.000000 (median of 93)
Best run for this changeset:
! wall 0.093191 comb 0.090000 user 0.090000 sys 0.000000 (median of 100)
Differential Revision: https://phab.mercurial-scm.org/D5942
Pulkit Goyal <pulkit@yandex-team.ru> [Fri, 15 Feb 2019 17:36:57 +0300] rev 41724
obsutil: don't assume leftctx and rightctx repo as same
Backed out changeset 520514af2d93.
hgsubversion can pass leftctx and rightctx which are instances of two different
repositories. This was making tests fail on hgsubversion with 4.9.
The two different instances are:
(Pdb) p rightctx.repo()
<filteredrepo:served <hgsubversion.svnrepo.svnlocalrepo object at 0x7fe29d296d10>>
(Pdb) p leftctx.repo()
<filteredrepo:visible <hgsubversion.svnrepo.svnlocalrepo object at 0x7fe29d494590>>
Differential Revision: https://phab.mercurial-scm.org/D5968